Мекушци
Мекушци (Mollusca) су водене, ређе копнене животиње, са меким [лат. mollis = мекан] телом и љуштуром која га штити. Свака класа мекушаца има посебан план грађе, али све класе имају заједничке следеће особине:
Мекушци Временски распон:
| |
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Tonicella lineata, хитон | |
Научна класификација | |
Домен: | Eukaryota |
Царство: | Animalia |
Надтип: | Lophotrochozoa |
Тип: | Mollusca Linnaeus, 1758 |
Диверзитет[1] | |
85.000 признатих врста. |
- билатерално су симетрични организми;
- тело им се састоји од: главе, утробне кесе, плашта, стопала и љуштуре;
- нервни систем је ганглионеран;
- крвни систем је отвореног типа;
- целом је слабо развијен и налази се само око срца и полних жлезда;
- екскреција се врши метанефридијама, које крајње производе метаболизма из целома одводе у плаштану дупљу;
- дишу помоћу шкрга [шкржни филаменти са трепљама], плућа или целом површином тела.
Мекушци су раздео животиња с великим бројем врста и облика из групе бескичмењака које се дели на девет класа, од којих је осам постојећих и један изумрли разред. Тело им је меко, несегментисано. На темељу савремених истраживања ДНК, данас се мекушци и неке друге групе животиња сврставају у натколено Lophotrochozoa. Данас на земљи живи око 50.000 врста мекушаца, а у фосилном облику познати су још из раздобља прекамбријума. Наука која се бави мекушцима зове се малакологија (или малакозоологија).
Осим поларних регија и планина, мекушци настањују сва подручја на земљи. Већина живи у морима, готово све групе живе маритимно. Неке врсте шкољкаша могу се наћи и у слаткој води, а мањим делом чак и у влажној земљи (Pisidium spec.). Но највећа група мекушаца, пужеви, насељавају сва остала подручја.
Шкољкаши су искључиво водени мекушци. Обухватају око 15.000 врста, од којих већина живи у мору. Тело је оклопљено са две љуштуре (десном и левом). Немају главу и слабо су покретљиви. Могу бити велики од неколико mm до 1 m. Најпознатије слатководне врсте су барска и речна, а од морских: каменице, дагње, бисерне шкољке итд. Значајне су групе мекушаца те се користе у људској исхрани.
Пужеви су мекушци којих има их око 85.000 врста. Они имају чврсту кречњачку љуштуру. Сви копнени пужеви су хермафродити. Неке слатководне врсте коте живе младе. Користе се у људској исхрани. Пужеви голаћи наносе штету пољопривреди, а двобочна симетрија је знатно измјењена. Самооплодња је присутна само код неких пужева голаћа.
Главоношци су искључиво морски мекушци, тело им је симетрично, разликују се глава и труп а стопало је редуцирано. Глава је јасно одвојена од трупа. Напред се налазе уста. Према броју пипака подељени су на осмокраке (са 8 једнаких пипака) и десетокраке (са 8 једнаких и 2 велика крака). Веома су покретљиве животиње. У морима живи око 700 врста а најпознатије су сипе, хоботнице и лигње од којих неке нарасту и до 20 m укупне дужине. Главоношци имају истакнут економски значај.
Хитони су мала група морских мекушаца који се одликују неким од најпримитивнијих особина мекушаца. Углавном су распрострањени у топлим морима. Међу њима је најпознатији обични хитон. Немају економског значаја.
Етимологија
уредиРечи mollusc и mollusk су изведене из француске речи mollusque, која потиче од латинске molluscus, од mollis, мекан. Сама реч Molluscus је била адаптација Аристотелове τα μαλακά (ta malaká), „мекане ствари“, коју је он користио за сипе. Научно изучавање мекушаца се стога назива молакологијом.[2]
Име Molluscoida је раније кориштено за означавање поделе животињског царства која је садржала шкољке светиљке, морске маховине, и плашташе, чланове три групе за које се сматрало да донекле подсећају на мекушце. Данас је познато да те групе нису сродне мекушцима, и да су веома мало међусобно сродне, те је име Molluscoida напуштено.[3]
Дефиниција
уредиНајуниверзалнија својство телесне структуре мекушаца је мантија са знатним отвором који се користи за дисање и излучивање, и организација нервног система. Многи имају кречњачке шкољке.[4]
Мекушци су развили веома велики број различитих телесних структура да је тешко да се нађу синапоморфи (дефинишуће карактеристике) који важе за све модерне групе.[5] Најопштија карактеристика мекушаца је да су они несегментирани и билатерално симетрични.[6] Следеће је присутно код свих моерних мекушаца:[7][8]
- Лежни део телесног зида је мантија (или pallium) који излучују кречњачке спикуле, плоча или шкољка. Њом се обавија тело оставњајући довољно слободног простора.
- Отвори ануса и гениталија су у мантионој шупљини.
- Постоје два пара главних нервних нити.[8]
Остале карактеристике које се обично појављују у уџбеницима имају значајне изузетке:
Присуство карактеристика по класама мекушаца | |||||||
Карактеристике мекушаца[7] | Aplacophora[9] | Polyplacophora[10] | Monoplacophora[11] | Gastropoda[12] | Cephalopoda[13] | Bivalvia[14] | Scaphopoda[15] |
---|---|---|---|---|---|---|---|
Радула, назубљену хитинозну структуру у устима | Одсутна код 20% Neomeniomorpha | Да | Да | Да | Да | Не | Интерна, не може проширити изван тела |
Широко, мишићаво стопало | Редуковано или одсутно | Да | Да | Да | Модификовано у руке | Да | Мало, само на фронталном крају |
Леђна концентрација унутрашњих органа (висцерална маса) | Није очевидно | Да | Да | Да | Да | Да | Да |
Велико дигестивно слепо црево | Није присутно код неких Aplacophora | Да | Да | Да | Да | Да | Не |
Велики комплексни нефридијум („бубрези“) | Ни један | Да | Да | Да | Да | Да | Мали, једноставан |
Један или више вентила / шкољке | Примитивне форме, да; модерне форме, не | Да | Да | Пужеви, да; пужеви голаћи, углавном да (интерни закржљали) | Октопуси, не; сипа, наутилус, лигње, да | Да | Да |
Одонтофора | Да | Да | Да | Да | Да | Не | Да |
Разноврсност
уредиПроцене броја описаних живућих врста мекушаца варирају од 50.000 до максимално 120.000 врста.[1] Године 1969. Дејвид Никол је проценио да је вероватни тотални број живућих мекушаца око 107.000 од којих су око 12.000 слатководни гастроподи и 35.000 копнени. Шкољке би сачињавале око 14% тог тотала, а других пет класа мање од 2% живућих мекушаца.[17] Године 2009. Чапман је проценио да је број описаних живих врста око 85.000.[1] Haszprunar је 2001. проценио да има око 93.000 именованих врста,[18] што обухвата 23% свих именованих морских организама.[19] Мекушци су други једино у односу на зглавкаре по броју живих животињских врста[16] — далеко иза зглавкарских 1.113.000, мада знато испред хордата са 52.000.[20] По неким проценама тотални број живих врста је око 200.000,[1][21] као и 70.000 фосилних врста,[7] мада тотални број врста мекушаца које су икад постојале, независно од тока да ли су презервиране, мора бити много пута већи од броја живих врста.[22]
Мекушци имају разноврсније облике од било којег другог животињског раздела. Они обухватају пужеве, пужеве голаће и друге гастроподе; многе врсте шкољки; лигње и друге главоношце; и низ других мање познатих мада особиних подгрупа. Већина врста живи у океанима, од морских обала до абисалне зоне, док су неке форме знатан део слатководне фауне и копнених екосистема. Мекушци су екстремно разноврсни у тропским и умереним регионима, иако се могу наћи на свим латитудама.[5] Око 80% свих познатих врста мекушаца су гастроподи.[16] Главоношци као што су лигње, сипе, и октопуси су међу неуролошки најнапреднијим бескичмењацима.[23] Гигантска лигња, која донедавно није проучавана жива у свом одраслом облику,[24] је један од највећих бескичмењака, мада је недавно ухваћени примерак колосалне лигње, 10 m дугачак и тежак 500 kg, вероватно већи.[25]
Слатководни и копнени мекушци су изузетно подложни изумирању. Процењује се да број ових мекушаца знатно варира, делом зато што многе регије нису биле детаљно испитане. Постоји и недостатак стручњака који могу да идентификују све животиње на било којем подручју према врстама. Године 2004, Црвена листа IUCN угрожених врста је обухватала скоро 2.000 угрожених немаринских мекушаца. У контрасту с тим, већина врста мекушаца је морска, а само се 41 од њих се појавила на црвеној листи те године. Око 42% од забележених изумирања од 1500. године су мекушци, и они су скоро у потпуности немаринске врсте.[26]
Морфологија мекушаца
уредиГлава је више или мање јасно одвојена од тела и на њој се налазе чула (пар тентакула – пипака са оцелама – простим очима) и усни отвор. У усном отвору је радула (треница), која је грађена од зубића за уситњавање хране. Иза усног отвора је ждрело, које се даље наставља на једњак, средње црево у које се улива пар жлезда – јетра. Од средњег црева наставља се задње црево, које се аналним отвором излива у плаштану дупљу. Црево је смештено у утробној кеси која се налази на леђној, задњој страни тела. Плашт је кожни набор који обавија утробну кесу и затвара плаштану дупљу. У тој дупљи су шкрге, анални отвор и отвори метанефридија и полних одвода. На трбушној страни тела налази се стопало које служи за кретање. Плашт лучи љуштуру која потпуно или делимично препокрива тело. Сви ови делови тела могу да код различитих класа мекушаца буду измењени, а неки могу и да недостају.
Крвни систем ја отворен што значи да се крв излива у шупљине и лакуне око органа, односно да не постоји капиларна размена материја. Крв (хемолимфа) из шкрга доспева у преткоморе срца, а из њих у комору. Из коморе полази аорта која крв разноси до шупљина и лакуна око органа и ткива, одакле се артеријама доводи поново у шкрге. Тако кроз срце пролази само оксигенисана крв.
Нервни систем је ганглионаран, чини га неколико пари ганглија: главене, стопаоне, бочне (налазе се бочно од црева) и утробне. Све ганглије су међусобно повезане и од њих полазе нерви за све органе.
Респирацију обављају шкргама (ктенидијама) које се налазе у плаштаној дупљи. Вода улази у плаштану дупљу захваљујући раду трепљи на шкржним филаментима, а по обављеној размени гасова излази кроз излазни сифон у спољашњу средину. Копнени мекушци дишу преко унутрашње површине плаштане дупље која садржи мрежу крвних судова.
Полне жлезде смештене су у утробној кеси у целому, са одводима до плаштане дупље. Код неких представника мекушаца заступљен је хермафродитизам.
Класификација мекушаца
уредиУ оквиру типа мекушаца срећемо се са врло познатим и честим облицима који су данас сврстани у класе:
Класа Aplacophora
уреди- Подкласа Caudofoveata
- Породица Chaetodermatidae
- Породица Limifossoridae
- Породица Prochaetodermatidae
- Подкласа Solenogastres
- Ред Cavibelonia
- Породица Acanthomeniidae
- Породица Amphimeniidae
- Породица Drepanomeniidae
- Породица Epimeniidae
- Породица Pararrhopaliidae
- Породица Proneomeniidae
- Породица Rhipidoherpiidae
- Породица Rhopalomeniidae
- Породица Simrothiellidae
- Породица Strophomeniidae
- Породица Syngenoherpiidae
- Ред Neomeniamorpha
- Породица Hemimeniidae
- Породица Neomeniidae
- Род Notomenia
- Род Pholidoherpia
- Ред Pholidoskepia
- Породица Dondersiidae
- Породица Gymnomeniidae
- Породица Lepidomeniidae
- Породица Macellomeniidae
- Породица Meiomeniidae
- Породица Sandalomeniidae
- Ред Sterrofustia
- Породица Herteroherpiidae
- Породица Imeroherpiidae
- Породица Phyllomeniidae
- Ред Cavibelonia
- Подкласа Caudofoveata
- Надред Cryptodonta
- Подкласа Heterodonta
- Ред Myoida
- Надпородица Anomalodesmacea
- Надпородица Gastrochaenoidea
- Породица Gastrochaenidae
- Надпородица Hiatelloidea
- Породица Hiatellidae
- Надпородица Myoidea
- Породица Corbulidae
- Породица Erodonidae
- Породица Myidae
- Породица Spheniopsidae
- Надпородица Pholadoidea
- Породица Pholadidae
- Породица Teredinidae
- Ред Veneroida
- Надпородица Arcticoidea
- Породица Arcticidae
- Породица Trapezidae
- Надпородица Astartoidea
- Породица Astartidae
- Породица Cardiniidae
- Надпородица Cardioidea
- Породица Cardiidae
- Надпородица Carditoidea
- Породица Carditidae
- Породица Condylocardiidae
- Надпородица Chamoidea
- Породица Chamidae
- Надпородица Corbiculoidea
- Породица Corbiculidae
- Породица Pisidiidae (peaclams)
- Надпородица Crassatelloidea
- Породица Crassatellidae
- Надпородица Cyamioidea
- Породица Cyamiidae
- Породица Neoleptonidae
- Породица Sportellidae
- Надпородица Dreissenoidea
- Породица Dreissenidae
- Надпородица Galeommatoidea
- Породица Galeommatidae
- Породица Lasaeidae
- Породица Leptonidae
- Надпородица Glossoidea
- Породица Glossidae
- Породица Kelliellidae
- Породица Vesicomyidae
- Надпородица Lucinoidea
- Породица Cyrenoididae
- Породица Fimbriidae
- Породица Lucinidae
- Породица Mactromyidae
- Породица Thyasiridae
- Породица Ungulinidae
- Надпородица Mactroidea
- Породица Anatinellidae
- Породица Cardilidae
- Породица Mactridae
- Породица Mesodesmatidae
- Надпородица Solenoidea
- Надпородица Tellinoidea
- Породица Donacidae
- Породица Psammobiidae
- Породица Scrobiculariidae
- Породица Semelidae
- Породица Solecurtidae
- Породица Tellinidae
- Надпородица Arcticoidea
- Ред Myoida
- Подкласа Palaeoheterodonta
- Ред Trigonioida
- Породица Trigoniidae
- Ред Unionoida
- Породица Etheriidae
- Породица Margaritiferidae
- Породица Mutelidae
- Породица Unionidae (unionidi)
- Ред Trigonioida
- Ред Pholadomyoida
- Породица Clavagellidae
- Породица Cleidothaeridae
- Породица Cuspidariidae
- Породица Laternulidae
- Породица Lyonsiidae
- Породица Myochamidae
- Породица Pandoridae
- Породица Periplomatidae
- Породица Pholadomyidae
- Породица Poromyidae
- Породица Thraciidae
- Породица Verticordiidae
- Подкласа Protobranchia
- Ред Nuculoida
- Породица Lametilidae
- Породица Malletiidae
- Породица Neilonellidae
- Породица Nuculanidae
- Породица Nuculidae
- Породица Praenuculidae
- Породица Pristiglomidae
- Породица Siliculidae
- Породица Tindariidae
- Породица Yoldiidae
- Ред Solemyoida
- Породица Manzanellidae
- Породица Solemyidae
- Ред Nuculoida
- Подкласа Pteriomorphia
- Ред Arcoida
- Породица Arcidae
- Породица Cucullaeidae
- Породица Glycymerididae
- Породица Limopsidae
- Породица Noetiidae
- Породица Parallelodontidae
- Породица Philobryidae
- Ред Limoida
- Породица Limidae
- Ред Mytiloida
- Породица Mytilidae
- Ред Ostreoida
- Породица Anomiidae
- Породица Dimyidae
- Породица Entoliidae
- Породица Gryphaeidae
- Породица Ostreidae
- Породица Pectinidae
- Породица Plicatulidae
- Породица Propeamussidae
- Породица Spondylidae
- Породица Syncyclonemidae
- Ред Pterioida
- Породица Isognomonidae
- Породица Malleidae
- Породица Pinnidae
- Породица Pteriidae
- Породица Pulvinitidae
- Ред Arcoida
Ц класа Cephalopoda
уреди- Ред Sepiida
- Породица Sepiadariidae
- Породица Sepiidae
- Ред Sepiolida
- Породица Idiosepiidae
- Породица Sepiolidae
- Ред Spirulida
- Породица Spirulidae
- Ред Teuthida
- Подред Myopsina
- Породица Loliginidae
- Подред Oegopsina
- Породица Ancistrocheiridae
- Породица Architeuthidae
- Породица Bathyteuthidae
- Породица Batoteuthidae
- Породица Brachioteuthidae
- Породица Chiroteuthidae
- Породица Chtenopterygidae
- Породица Cranchiidae
- Породица Cycloteuthidae
- Породица Enoploteuthidae
- Породица Gonatidae
- Породица Histioteuthidae
- Породица Joubiniteuthidae
- Породица Lepidoteuthidae
- Породица Lycoteuthidae
- Породица Mastigoteuthidae
- Породица Neoteuthidae
- Породица Octopoteuthidae
- Породица Ommastrephidae
- Породица Onychoteuthidae
- Rod Parateuthis
- Породица Promachoteuthidae
- Породица Psychroteuthidae
- Породица Pyroteuthidae
- Породица Thysanoteuthidae
- Породица Walvisteuthidae
- Подред Myopsina
- Ред Octopoda
- Подред Cirrina
- Породица Cirroteuthidae
- Породица Opisthoteuthidae
- Породица Stauroteuthidae
- Подред Incirrina
- Породица Alloposidae
- Породица Amphitretidae
- Породица Argonautidae
- Породица Bolitaenidae
- Породица Idioctopodidae
- Породица Octopodidae
- Породица Ocythoidae
- Породица Tremoctopodidae
- Породица Vitreledonellidae
- Подред Cirrina
- Ред Vampyromorpha
- Породица Vampyroteuthidae
- Подкласа Nautiloidea
- Ред Nautilida
- Породица Nautilidae
- Ред Nautilida
- Ред Sepiida
Д разред Gastropoda
уреди- Подкласа Opisthobranchia (opisthobranchs)
- Ред Acochlidioidea
- Породица Acochlidiidae
- Породица Hedylopsidae
- Породица Microhedylidae
- Надпородица Philinoglossoidea
- Породица Philinoglossidae
- Ред Acochlidioidea
- Ред Anaspidea
- Породица Akeridae
- Породица Aplysiidae
- Породица Notarchidae
- Ред Cephalaspidea
- Породица Acteocinidae
- Породица Aglajidae
- Породица Aplustridae
- Породица Bullidae
- Породица Bullinidae
- Породица Cylichnidae
- Породица Diaphanidae
- Породица Gastropteridae
- Породица Haminoeidae
- Породица Hydatinidae
- Породица Notodiaphanidae
- Породица Philinidae
- Породица Retusidae
- Породица Ringiculidae
- Породица Runcinidae
- Ред Gymnosomata
- Породица Clionidae
- Породица Cliopsidae
- Породица Hermaeidae
- Породица Hydromylidae
- Породица Laginiopsidae
- Породица Notobranchaeidae
- Породица Pneumodermatidae
- Породица Thliptodontidae
- Ред Notaspidea
- Породица Pleurobranchidae
- Породица Tylodinidae
- Породица Umbraculidae
- Ред Nudibranchia (nudibranchs)
- Породица Actinocyclidae
- Породица Aeolidiidae
- Породица Aldisidae
- Породица Archidorididae
- Породица Arminidae
- Породица Asteronotidae
- Породица Babakinidae
- Породица Chromodorididae
- Породица Conualeviidae
- Породица Corambidae
- Породица Cumanotidae
- Породица Dendrodorididae
- Породица Dendronotidae
- Породица Dironidae
- Породица Discodorididae
- Породица Dorididae
- Подред Doridoidea
- Надпородица Cryptobranchia
- Породица Calycidorididae
- Породица Halgerdidae
- Породица Hexabranchidae
- Надпородица Gnathodoridoidea
- Породица Bathydorididae
- Породица Doridoxidae
- Надпородица Cryptobranchia
- Породица Dotoidae
- Подред Eolidoidea
- Надпородица Acleioprocta
- Породица Calmidae
- Породица Cuthonidae
- Породица Pseudovermidae
- Надпородица Cleioprocta
- Породица Favorinidae
- Породица Myrrhinidae
- Породица Spurillidae
- Надпородица Pleuroprocta
- Породица Coryphellidae
- Породица Notaeolidiidae
- Надпородица Acleioprocta
- Подред Eolidoidea
- Породица Eubranchidae
- Породица Facelinidae
- Породица Fionidae
- Породица Flabellinidae
- Породица Glaucidae
- Породица Goniodorididae
- Породица Hancockiidae
- Породица Janolidae
- Породица Kentrodorididae
- Породица Lomanotidae
- Породица Notodorididae
- Породица Onchidorididae
- Подред Phanerobranchia
- Породица Aegiretidae
- Породица Gymnodorididae
- Породица Polyceridae
- Породица Triophidae
- Породица Vayssiereidae
- Ред Sacoglossa
- Породица Boselliidae
- Породица Caliphyllidae
- Породица Costasiellidae
- Породица Cylindrobullidae
- Породица Elysiidae
- Породица Juliidae
- Породица Limapontiidae
- Породица Oleidae
- Породица Oxynoidae
- Породица Stiligeridae
- Породица Volvatellidae
- Ред Soleolifera
- Породица Rathouisiidae
- Ред Thecosomata
- Породица Cavoliniidae
- Породица Cymbuliidae
- Породица Desmopteridae
- Породица Limacinidae
- Породица Peraclididae
- Подкласа Pulmonata
- Ред Archaeopulmonata
- Породица Ellobiidae
- Породица Melampodinae
- Ред Basommatophora
- Породица Acroloxidae
- Породица Amphibolidae
- Породица Ancylidae
- Породица Carychiidae
- Породица Chilinidae
- Породица Lancidae
- Породица Latiidae
- Породица Lymnaeidae
- Породица Melampidae
- Породица Otinidae
- Породица Physidae
- Породица Planorbidae
- Породица Siphonariidae
- Породица Trimusculidae
- Ред Stylommatophora
- Породица Arionidae
- Породица Bradybaenidae
- Породица Bulimulidae
- Породица Camaenidae
- Породица Ceriidae
- Породица Charopidae
- Породица Cionellidae
- Породица Discidae
- Породица Ferrussaciidae
- Породица Haplotrematidae
- Породица Helicarionidae
- Породица Helicidae
- Породица Helicodiscidae
- Породица Helminthoglyptidae
- Подред Heterurethra
- Породица Aillyidae
- Породица Athoracophoridae
- Породица Humboldtianidae
- Породица Hygromiidae
- Породица Limacidae
- Породица Megomphicidae
- Подред Mesurethra
- Породица Clausiliidae
- Породица Corillidae
- Породица Dorcasiidae
- Породица Megaspiridae
- Породица Strophocheilidae
- Породица Milacidae
- Породица Oleacinidae
- Породица Oreohelicidae
- Подред Orthurethra
- Породица Achatinellidae
- Породица Amastridae
- Породица Chondrinidae
- Породица Cochlicopidae
- Породица Enidae
- Породица Orculidae
- Породица Partulidae
- Породица Pleurodiscidae
- Породица Pyramidulidae
- Породица Vertiginidae
- Породица Philomycidae
- Породица Polygyridae
- Породица Punctidae
- Породица Pupillidae
- Породица Sagdidae
- Надред Sigmurethra
- Инфраред Aulacopoda
- Породица Ariophantidae
- Породица Endodontidae
- Породица Euconulidae
- Породица Otoconchidae
- Породица Parmacellidae
- Породица Systrophiidae
- Породица Thyrophorellidae
- Породица Trigonochlamydidae
- Породица Trochomorphidae
- Породица Urocyclidae
- Infraorder Holopoda
- Породица Ammonitellidae
- Породица Helicellidae
- Infraorder Holopodopes
- Породица Acavidae
- Породица Achatinidae
- Породица Amphibulimidae
- Породица Chlamydephoridae
- Породица Odontostomidae
- Породица Orthalicidae
- Породица Rhytididae
- Инфраред Aulacopoda
- Ред Systellommatophora
- Породица Onchidiidae
- Породица Veronicellidae
- Ред Archaeopulmonata
- Ред Heterostropha
- Породица Acteonidae
- Породица Amathinidae
- Породица Architectonicidae
- Породица Cornirostridae
- Породица Ebalidae
- Породица Mathildidae
- Породица Omalogyridae
- Породица Pyramidellidae
- Породица Rissoellidae
- Породица Valvatidae
- Ред Neotaenioglossa
- Породица Aclididae
- Породица Annulariidae
- Породица Aporrhaididae
- Породица Assimineidae
- Породица Atlantidae
- Породица Barleeiidae
- Породица Batillariidae
- Породица Bithyniidae
- Породица Bursidae
- Породица Caecidae
- Породица Calyptraeidae
- Породица Capulidae
- Породица Carinariidae
- Породица Cassidae
- Породица Cerithiidae
- Породица Cerithiopsidae
- Породица Cypraeidae
- Породица Elachisinidae
- Породица Epitoniidae
- Породица Eulimidae
- Породица Falsicingulidae
- Породица Ficidae
- Породица Haloceratidae
- Породица Hipponicidae
- Породица Hydrobiidae
- Породица Janthinidae
- Породица Lamellariidae
- Породица Litiopidae
- Породица Littorinidae
- Породица Modulidae
- Породица Naticidae
- Породица Obtortionidae
- Породица Ovulidae
- Породица Pelycidiidae
- Породица Personidae
- Породица Pickworthiidae
- Породица Planaxidae
- Породица Pleuroceridae
- Породица Potamididae
- Породица Pterotracheidae
- Породица Ranellidae
- Породица Rissoidae
- Породица Siliquariidae
- Породица Skeneopsidae
- Породица Strombidae
- Породица Thiaridae
- Породица Tonnidae
- Породица Tornidae
- Породица Triphoridae
- Породица Triviidae
- Породица Truncatellidae
- Ред Patellogastropoda
- Подкласа Prosobranchia
- Ред Mesogastropoda
- Породица Abyssochrysidae
- Породица Aciculidae
- Породица Aporrhaidae
- Породица Asterophilidae
- Породица Cassididae
- Породица Chondropomidae
- Породица Choristidae
- Породица Cingulopsidae
- Породица Cochlostomatidae
- Породица Ctenosculidae
- Надпородица Cyclophoroidea
- Породица Cyclophoridae
- Породица Diplommatinidae
- Породица Liareidae
- Породица Maizaniidae
- Породица Megalomastomidae
- Породица Poteriidae
- Породица Pupinidae
- Породица Cymatiidae
- Породица Diastomidae
- Породица Eratoidae
- Породица Fossaridae
- Надпородица Heteropoda
- Породица Hydrococcidae
- Породица Iravadiidae
- Породица Lacunidae
- Породица Melanopsidae
- Породица Micromelaniidae
- Породица Omalaxidae
- Породица Paedophoropodidae
- Породица Pilidae
- Породица Pomatiopsidae
- Породица Pseudosacculidae
- Породица Stenothyridae
- Породица Stiliferidae
- Породица Struthiolariidae
- Породица Syrnolopsidae
- Породица Trachysmidae
- Породица Trichotropidae
- Породица Trochaclisidae
- Надпородица Viviparoidea
- Ред Neogastropoda
- Породица Buccinidae
- Породица Cancellariidae
- Породица Columbellidae
- Породица Conidae
- Породица Coralliophilidae
- Породица Costellariidae
- Породица Cystiscidae
- Породица Drilliidae
- Породица Fasciolariidae
- Породица Harpidae
- Породица Marginellidae
- Породица Melongenidae
- Породица Mitridae
- Породица Muricidae
- Породица Nassariidae
- Породица Olividae
- Породица Pseudolividae
- Породица Pseudomelatomidae
- Ред Stenoglossa
- Породица Buccinulidae
- Породица Columbariidae
- Породица Magilidae
- Породица Neptuneidae
- Подред Toxoglossa
- Породица Vasidae
- Породица Strictispiridae
- Породица Terebridae
- Породица Turbinellidae
- Породица Turridae
- Породица Volutidae
- Породица Volutomitridae
- Ред Archaeogastropoda
- Породица Addisoniidae
- Породица Calliostomatidae
- Надпородица Cocculinoidea
- Породица Bathysciadiidae
- Породица Cocculinidae
- Надпородица Fissurelloidea
- Породица Fissurellidae
- Породица Haliotididae
- Надпородица Helicinoidea
- Породица Ceresidae
- Породица Proserpinidae
- Надпородица Hydrocenoidea
- Породица Hydrocenidae
- Надпородица Lepetelloidea
- Породица Bathyphytophilidae
- Породица Cloristellidae
- Породица Cocculinellidae
- Породица Lepetellidae
- Породица Osteopeltidae
- Породица Pyropeltidae
- Надпородица Lepetodriloidea
- Породица Gorgoleptidae
- Породица Lepetodrilidae
- Надпородица Neomphaloidea
- Породица Neomphalidae
- Надпородица Neritoidea
- Породица Neritopsidae
- Породица Septariidae
- Породица Orbitestellidae
- Надпородица Patelloidea
- Породица Patellidae
- Породица Phasianellidae
- Породица Pleurotomariidae
- Надпородица Pleurotomarioidea
- Породица Haliotidae
- Породица Pseudococculinidae
- Породица Scissurellidae
- Породица Seguenziidae
- Надпородица Seguenzioidea
- Породица Skeneidae
- Породица Titiscaniidae
- Надпородица Trochacea
- Породица Cyclostrematidae
- Породица Trochidae
- Породица Stomatellidae
- Породица Tricoliidae
- Породица Turbiniidae
- Породица Trochaclididae
- Породица Trochidae
- Породица Turbinidae
- Ред Architaenioglossa
- Породица Ampullariidae
- Породица Viviparidae
- Породица Enteroxenidae
- Ред Entomotaeniata
- Ред Neritopsina
- Породица Helicinidae
- Породица Neritidae
- Породица Phenacolepadidae
- Ред Mesogastropoda
- Ред Rhodopemorpha
- Породица Rhodopidae
- Подкласа Opisthobranchia (opisthobranchs)
- Ред Tryblidiida
- Породица Laevipilinidae
- Надпородица Tryblidioidea
- Породица Neopilinidae
- Породица Tryblidiidae
- Ред Tryblidiida
Ф класа Polyplacophora
уреди- Ред Neoloricata (chitons)
- Подред Acanthochitonina
- Породица Acanthochitonidae
- Породица Cryptoplacidae
- Подред Choriplacina
- Породица Choriplacidae
- Подред Ischnochitonina
- Породица Chitonidae
- Породица Ischnochitonidae
- Породица Mopaliidae
- Породица Schizochitonidae
- Подред Lepidopleurina
- Породица Hanleyidae
- Породица Leptochitonidae
Г класа Scaphopoda
уреди- Ред Dentaliida
- Породица Calliodentaliidae
- Породица Dentaliidae
- Породица Fustiariidae
- Породица Gadilinidae
- Породица Laevidentaliidae
- Породица Omniglyptidae
- Породица Rhabdidae
- Ред Gadilida
- Породица Entalinidae
- Породица Gadilidae
- Породица Pulsellidae
- Породица Siphonodentaliidae
- Ред Dentaliida
Фамилије
уреди- Abronicidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl and Picton, 2017
- Abyssochrysidae Tomlin, 1927
- Acanthochitonidae Pilsbry, 1893
- Acanthomeniidae
- Acavidae Pilsbry, 1895
- Achatinellidae Gulick, 1873
- Achatinidae Swainson, 1840
- Aciculidae Gray, 1850
- Aclididae G. O. Sars, 1878
- Acmaeidae Forbes, 1850
- Acochlidiidae Küthe, 1935
- Acroloxidae Thiele, 1931
- Acteonidae d'Orbigny, 1843
- Actinocyclidae O'Donoghue, 1929
- Addisoniidae Dall, 1882
- Aegiridae P. Fischer, 1883
- Aeolidiidae Gray, 1827
- Agardhiellidae Harl and Páll-Gergely, 2017
- Aglajidae Pilsbry, 1895
- Agriolimacidae H. Wagner, 1935
- Aillyidae H. B. Baker, 1955
- Aitengidae Swennen and Buatip, 2009
- Akeridae Mazzarelli, 1891
- Akiodorididae Millen and Martynov, 2005
- Alacuppidae Oskars, Bouchet and Malaquias, 2015
- Alloposidae Verrill, 1881
- Amastridae Pilsbry, 1910
- Amathinidae Ponder, 1987
- Amnicolidae Tryon, 1863
- Amphibolidae Gray, 1840
- Amphibulimidae P. Fischer, 1873
- Amphimeniidae Salvini-Plawen, 1972
- Amphitretidae Hoyle, 1886
- Ampullariidae Gray, 1824
- Ampullinidae Cossmann, 1919
- Anabathridae Keen, 1971
- Anadenidae Pilsbry, 1948
- Anatinellidae Deshayes, 1853
- Anatomidae McLean, 1989
- Ancillariidae Swainson, 1840
- Ancistrocheiridae Pfeffer, 1912
- Angariidae Gray, 1857
- Annulariidae Henderson and Bartsch, 1920
- Anomiidae Rafinesque, 1815
- Anulidentaliidae Chistikov, 1975
- Apataidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl and Picton, 2017
- Aplustridae Gray, 1847
- Aplysiidae Lamarck, 1809
- Aporrhaidae Gray, 1850
- Architectonicidae Gray, 1850
- Architeuthidae Pfeffer, 1900
- Arcidae Lamarck, 1809
- Arcticidae Newton, 1891
- Areneidae McLean, 2012
- Argnidae Hudec, 1965
- Argonautidae Tryon, 1879
- Ariolimacidae Pilsbry and Vanatta, 1898
- Arionidae Gray, 1840
- Ariophantidae Godwin-Austen, 1888
- Arminidae Iredale and O'Donoghue, 1923
- Asperspinidae Rankin, 1979
- Assimineidae H. Adams and A. Adams, 1856
- Astartidae d'Orbigny, 1844
- Athoracophoridae P. Fischer, 1883
- Atlantidae Rang, 1829
- Azecidae Watson, 1920
- Babakinidae Roller, 1973
- Baltodentaliidae
- Barleeiidae Gray, 1857
- Basterotiidae Cossmann, 1909
- Bathydorididae Bergh, 1891
- Bathyhedylidae Neusser, Jörger, Lodde-Bensch, Strong and Schrödl, 2016
- Bathyphytophilidae Moskalev, 1978
- Bathysciadiidae Dautzenberg and H. Fischer, 1900
- Bathyteuthidae Pfeffer, 1900
- Batillariidae Thiele, 1929
- Batoteuthidae Young and Roper, 1968
- Bellolividae Kantor, Fedosov, Puillandre, Bonillo and Bouchet, 2017
- Belomitridae Kantor, Puillandre, Rivasseau and Bouchet, 2012
- Benthobiidae Kantor, Fedosov, Puillandre, Bonillo and Bouchet, 2017
- Binneyidae Cockerell, 1891
- Bithyniidae Gray, 1857
- Boettgerillidae Wiktor and I. M. Likharev, 1979
- Bolitaenidae Chun, 1911
- Bornellidae Bergh, 1874
- Borsoniidae Bellardi, 1875
- Bothriembryontidae Iredale, 1937
- Bouchetispiridae Kantor, Strong and Puillandre, 2012
- Brachioteuthidae Pfeffer, 1908
- Buccinidae Rafinesque, 1815
- Bulimulidae Tryon, 1867
- Bullidae Gray, 1827
- Burnupiidae Albrecht in Bouchet et al., 2017
- Bursidae Thiele, 1925
- Bythinellidae Locard, 1893
- Cadlinidae Bergh, 1891
- Caecidae Gray, 1850
- Calliodentaliidae Chistikov, 1975
- Calliostomatidae Thiele, 1924
- Calmidae Iredale and O'Donoghue, 1923
- Calopiidae Ponder, 1999
- Calycidorididae Roginskaya, 1972
- Calyptraeidae Lamarck, 1809
- Camaenidae Pilsbry, 1895
- Campanilidae Douvillé, 1904
- Canariellidae Schileyko, 1991
- Cancellariidae Forbes and Hanley, 1851
- Capulidae Fleming, 1822
- Cardiidae Lamarck, 1809
- Cardilidae P. Fischer, 1887
- Cardiniidae Zittel, 1881
- Carditidae Férussac, 1822
- Carinariidae Blainville, 1818
- Caryodidae Conolly, 1915
- Cassidae Latreille, 1825
- Cataegidae McLean and Quinn, 1987
- Cavoliniidae Gray, 1850
- Caymanabyssiidae B. A. Marshall, 1986
- Cepolidae Ihering, 1909
- Cerastidae Wenz, 1923
- Cerionidae Pilsbry, 1901
- Cerithiidae J. Fleming, 1822
- Cerithiopsidae H. Adams and A. Adams, 1853
- Cetoconchidae Ridewood, 1903
- Chaetodermatidae Ihering, 1876
- Chamidae Lamarck, 1809
- Charitodoronidae Fedosov, Herrmann, Kantor and Bouchet, 2018
- Charoniidae Powell, 1933
- Charopidae Hutton, 1884
- Chilinidae Dall, 1870
- Chilodontaidae Wenz, 1938
- Chiroteuthidae Gray, 1849
- Chitonidae Rafinesque, 1815
- Chondrinidae Steenberg, 1925
- Choriplacidae Ashby, 1928
- Choristellidae Bouchet and Warén, 1979
- Chromodorididae Bergh, 1891
- Chronidae Thiele, 1931
- Chtenopterygidae Allan, 1945
- Cimidae Warén, 1993
- Cingulopsidae Fretter and Patil, 1958
- Cirroteuthidae Keferstein, 1866
- Clathurellidae H. Adams and A. Adams, 1858
- Clausiliidae Gray, 1855
- Clavagellidae d'Orbigny, 1844
- Clavatoridae Thiele, 1926
- Clavatulidae Gray, 1853
- Cleidothaeridae Hedley, 1918
- Clenchiellidae D. W. Taylor, 1966
- Clionidae Rafinesque, 1815
- Cliopsidae O. G. Costa, 1873
- Cocculinellidae Moskalev, 1971
- Cocculinidae Dall, 1882
- Cochlespiridae Powell, 1942
- Cochlicopidae Pilsbry, 1900
- Cochliopidae Tryon, 1866
- Coelociontidae Iredale, 1937
- Colinatydidae Oskars, Bouchet and Malaquias, 2015
- Colloniidae Cossmann, 1917
- Colpodaspididae Oskars, Bouchet and Malaquias, 2015
- Colubrariidae Dall, 1904
- Columbariidae Tomlin, 1928
- Columbellidae Swainson, 1840
- Condylocardiidae F. Bernard, 1897
- Conidae Fleming, 1822
- Conorbidae de Gregorio, 1880
- Conradiidae Golikov and Starobogatov, 1987
- Corambidae Bergh, 1871
- Corbulidae Lamarck, 1818
- Corillidae Pilsbry, 1905
- Cornirostridae Ponder, 1990
- Coryphellidae Bergh, 1889
- Costasiellidae K. B. Clark, 1984
- Costellariidae MacDonald, 1860
- Cranchiidae Prosch, 1847
- Craspedopomatidae Kobelt and Möllendorff, 1898
- Crassatellidae Férussac, 1822
- Creseidae Rampal, 1973
- Cryptoplacidae H. Adams and A. Adams, 1958
- Cucullaeidae Stewart, 1930
- Cumanotidae Odhner, 1907
- Curnonidae d'Udekem d'Acoz, 2017
- Cuspidariidae Dall, 1886
- Cuthonellidae M. C. Miller, 1977
- Cuthonidae Odhner, 1934
- Cyamiidae Philippi, 1845
- Cyclochlamydidae
- Cyclophoridae Gray, 1847
- Cycloteuthidae Naef, 1923
- Cylichnidae H. Adams and A. Adams, 1854
- Cylindrobullidae Thiele, 1931
- Cymatiidae Iredale, 1913
- Cymbuliidae Gray, 1840
- Cypraeidae Rafinesque, 1815
- Cyrenidae Gray, 1840
- Cyrenoididae H. and A. Adams, 1857
- Cystiscidae Stimpson, 1865
- Cystopeltidae Cockerell, 1891
- Dendrodorididae O'Donoghue, 1924
- Dendronotidae Allman, 1845
- Dentaliidae Children, 1834
- Desmopteridae Chun, 1889
- Dialidae Kay, 1979
- Diaphanidae Odhner, 1914
- Diapheridae Panha and Naggs, 2010
- Diastomatidae Cossmann, 1894
- Dimyidae P. Fischer, 1886
- Diplommatinidae L. Pfeiffer, 1857
- Dironidae Eliot, 1910
- Discidae Thiele, 1931
- Discodorididae Bergh, 1891
- Donacidae J. Fleming, 1828
- Dondersiidae
- Dorcasiidae Connolly, 1915
- Dorididae Rafinesque, 1815
- Doridomorphidae Er. Marcus and Ev. Marcus, 1960
- Doridoxidae Bergh, 1899
- Dotidae Gray, 1853
- Draparnaudiidae Solem, 1962
- Dreissenidae Gray, 1840
- Drepanomeniidae Salvini-Plawen, 1978
- Drilliidae Olsson, 1964
- Dyakiidae Gude and B. B. Woodward, 1921
- Eatoniellidae Ponder, 1965
- Echinichidae F. G. Thompson and Naranjo-Garcia, 2012
- Elachisinidae Ponder, 1985
- Ellobiidae L. Pfeiffer, 1854
- Elonidae Gittenberger, 1977
- Emblandidae Ponder, 1985
- Embletoniidae Pruvot-Fol, 1954
- Emmericiidae Brusina, 1870
- Endodontidae Pilsbry, 1895
- Enidae B. B. Woodward, 1903
- Enoploteuthidae Pfeffer, 1900
- Entalinidae Chistikov, 1979
- Entoliidae Teppner, 1922
- Eoacmaeidae
- Eoscaphandridae Chaban and Kijashko, 2016
- Epigridae Ponder, 1985
- Epimeniidae
- Epirobiidae F. G. Thompson, 2012
- Epitoniidae Berry, 1910
- Eratoidae Gill, 1871
- Etheriidae Deshayes, 1832
- Eubranchidae Odhner, 1934
- Eucalodiidae P. Fischer and Crosse, 1873
- Euciroidae Dall, 1895
- Euconulidae H. B. Baker, 1928
- Eucyclidae Koken, 1896
- Eudaroniidae Gründel, 2004
- Eulimidae Philippi, 1853
- Facelinidae Bergh, 1889
- Falsicingulidae Slavoshevskaya, 1975
- Fasciolariidae Gray, 1853
- Fauxulidae Harl and Páll-Gergely, 2017
- Ferussaciidae Bourguignat, 1883
- Ficidae Meek, 1864
- Fionidae Gray, 1857
- Fissurellidae Fleming, 1822
- Flabellinidae Bergh, 1889
- Flabellinopsidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl and Picton, 2017
- Fusiturridae Abdelkrim, Aznar-Cormano, Fedosov, Kantor, Lozouet, Phuong, Zaharias and Puillandre, 2018
- Fustiariidae Steiner, 1991
- Gadilidae Stoliczka, 1868
- Gadilinidae Chistikov, 1975
- Gaimardiidae Hedley, 1916
- Galatheavalvidae Knudsen, 1970
- Galeommatidae Gray, 1840
- Gastrochaenidae Gray, 1840
- Gastrocoptidae Pilsbry, 1918
- Gastrodontidae Tryon, 1866
- Gastropteridae Swainson, 1840
- Geomitridae C. Boettger, 1909
- Glacidorbidae Ponder, 1986
- Glaucidae Gray, 1827
- Glauconomidae Gray, 1853
- Globocornidae Espinosa and Ortea, 2010
- Glossidae Gray, 1847
- Glycymerididae Dall, 1908
- Gonatidae Hoyle, 1886
- Goniaeolididae Odhner, 1907
- Goniodorididae H. Adams and A. Adams, 1854
- Gryphaeidae Vyalov, 1936
- Gymnomeniidae
- Haliotidae Rafinesque, 1815
- Haloceratidae Warén and Bouchet, 1991
- Halonymphidae Scarlato and Starobogatov, 1983
- Haminoeidae Pilsbry, 1895
- Hancockiidae MacFarland, 1923
- Hanleyidae Bergenhayn, 1955
- Haplotrematidae H. B. Baker, 1925
- Harpidae Bronn, 1849
- Hedylopsidae Odhner, 1952
- Helicarionidae Bourguignat, 1877
- Helicidae Rafinesque, 1815
- Helicinidae Férussac, 1822
- Helicodiscidae H. B. Baker, 1927
- Helicodontidae Kobelt, 1904
- Helicostoidae Pruvot-Fol, 1937
- Hemidonacidae
- Hemimeniidae
- Hemisinidae P. Fischer and Crosse, 1891
- Hermaeidae H. Adams and A. Adams, 1854
- Heroidae Gray, 1857
- Herteroherpiidae
- Hexabranchidae Bergh, 1891
- Hiatellidae Gray, 1824
- Hipponicidae Troschel, 1861
- Histioteuthidae Verrill, 1881
- Holospiridae Pilsbry, 1946
- Horaiclavidae Bouchet, Kantor, Sysoev and Puillandre, 2011
- Hyalogyrinidae Warén and Bouchet, 1993
- Hydrobiidae Stimpson, 1865
- Hydrocenidae Troschel, 1857
- Hydrococcidae Thiele, 1928
- Hydromylidae Pruvot-Fol, 1942
- Hygromiidae Tryon, 1866
- Hyriidae Swainson, 1840
- Idioctopodidae Taki, 1962
- Idiosepiidae Fischer, 1882 in 1880-1887
- Ilbiidae Burn, 1963
- Imeroherpiidae
- Iravadiidae Thiele, 1928
- Iridinidae Swainson, 1840
- Ischnochitonidae Dall, 1889
- Isognomonidae Woodring, 1925
- Isolimeidae
- Jenseneriidae Ortea and Moro, 2015
- Joubiniteuthidae Naef, 1922
- Juliidae E. A. Smith, 1885
- Kelliellidae P. Fischer, 1887
- Labyrinthidae Borrero, Sei, Robinson and Rosenberg in Sei et al., 2017
- Laevidentaliidae Palmer, 1974
- Laginiopsidae Pruvot-Fol, 1922
- Lametilidae
- Laonidae Pruvot-Fol, 1954
- Larocheidae Finlay, 1927
- Lasaeidae Gray, 1842
- Laternulidae Hedley, 1918
- Latiidae Hutton, 1882
- Laubierinidae Warén and Bouchet, 1990
- Lauriidae Steenberg, 1925
- Lemindidae Griffiths, 1985
- Lepetellidae Dall, 1882
- Lepetidae Gray, 1850
- Lepetodrilidae McLean, 1988
- Lepidomeniidae
- Lepidoteuthidae Naef, 1912
- Leptochitonidae Dall, 1889
- Limacidae Batsch, 1789
- Limacinidae Gray, 1840
- Limapontiidae Gray, 1847
- Limidae Rafinesque, 1815
- Limifossoridae Salvini-Plawen, 1968
- Limopsidae Dall, 1895
- Liotiidae Gray, 1850
- Lironobidae Ponder, 1967
- Lithoglyphidae Tryon, 1866
- Litiopidae Gray, 1847
- Littorinidae Children, 1834
- Loliginidae Lesueur, 1821
- Lomanotidae Bergh, 1890
- Lottiidae Gray, 1840
- Lucinidae Fleming, 1828
- Lycoteuthidae Pfeffer, 1908
- Lymnaeidae Rafinesque, 1815
- Lyonsiellidae Dall, 1895
- Lyonsiidae P. Fischer, 1887
- Macellomeniidae
- Macrocyclidae Thiele, 1926
- Mactridae Lamarck, 1809
- Mactromyidae Cox, 1929
- Madrellidae Preston, 1911
- Maizaniidae Tielecke, 1940
- Malleidae Lamarck, 1818
- Malletiidae H. and A. Adams, 1858
- Mandeliidae Valdés and Gosliner, 1999
- Mangeliidae P. Fischer, 1883
- Maningrididae Golding, Ponder and Byrne, 2007
- Manzanellidae Chronic, 1952
- Margaritidae Thiele, 1924
- Margaritiferidae Henderson, 1929
- Marginellidae Fleming, 1828
- Marshallenidae Abdelkrim, Aznar-Cormano, Fedosov, Kantor, Lozouet, Phuong, Zaharias and Puillandre, 2018
- Mastigoteuthidae Verrill, 1881 in 1880-1881
- Mathildidae Dall, 1889
- Megalomastomatidae Blanford, 1864
- Megaspiridae Pilsbry, 1904
- Megomphicidae H. B. Baker, 1930
- Meiomeniidae
- Melanodrymiidae Salvini-Plawen and Steiner, 1995
- Melanopsidae H. Adams and A. Adams, 1854
- Melongenidae Gill, 1871
- Mesodesmatidae Gray, 1839
- Micractaeonidae Schileyko, 1999
- Milacidae Ellis, 1926
- Mitridae Swainson, 1931
- Mitromorphidae Casey, 1904
- Mnestiidae Oskars, Bouchet and Malaquias, 2015
- Modulidae P. Fischer, 1884
- Moitessieriidae Bourguignat, 1863
- Mopaliidae Dall, 1889
- Murchisonellidae Casey, 1904
- Muricidae Rafinesque, 1815
- Murmaniidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl and Picton, 2017
- Mycetopodidae Gray, 1840
- Myidae Lamarck, 1809
- Myochamidae P. P. Carpenter, 1861
- Myrrhinidae Bergh, 1905
- Mytilidae Rafinesque, 1815
- Nacellidae Thiele, 1891
- Nassariidae Iredale, 1916
- Naticidae Guilding, 1834
- Nautilidae Blainville, 1825
- Neilonellidae Schileyko, 1989
- Neocyclotidae Kobelt and Möllendorff, 1897
- Neolepetopsidae
- Neoleptonidae Thiele, 1934
- Neomeniidae Ihering, 1876
- Neomphalidae McLean, 1981
- Neopilinidae
- Neoteuthidae Naef, 1921
- Neritidae Rafinesque, 1815
- Neritiliidae Schepman, 1908
- Neritopsidae Gray, 1847
- Newnesiidae Moles, Wägele, Schrödl and Avila, 2017
- Newtoniellidae Korobkov, 1955
- Noetiidae Stewart, 1930
- Notaeolidiidae Eliot, 1910
- Notobranchaeidae Pelseneer, 1886
- Notomeniidae
- Nucinellidae Vokes, 1956
- Nuculanidae H. and A. Adams, 1858
- Nuculidae Gray, 1824
- Octopodidae D'Orbigny, 1839-1842 in Férussac and D'Orbigny, 1834-1848
- Octopoteuthidae Berry, 1912
- Ocythoidae Gray, 1849
- Odontocycladidae Hausdorf, 1996
- Odontostomidae Pilsbry and Vanatta, 1898
- Oleacinidae H. Adams and A. Adams, 1855
- Olividae Latreille, 1825
- Omalogyridae G. O. Sars, 1878
- Ommastrephidae Steenstrup, 1857
- Omniglyptidae Chistikov, 1975
- Onchidiidae Rafinesque, 1815
- Onchidorididae Gray, 1827
- Onychoteuthidae Gray, 1847
- Oopeltidae Cockerell, 1891
- Opisthoteuthidae Verrill, 1896
- Orbitestellidae Iredale, 1917
- Orculidae Pilsbry, 1918
- Oreohelicidae Pilsbry, 1939
- Orthalicidae Martens, 1860
- Osteopeltidae B. A. Marshall, 1987
- Ostreidae Rafinesque, 1815
- Otinidae H. Adams and A. Adams, 1855
- Ovulidae Fleming, 1822
- Oxychilidae Hesse, 1927
- Oxynoidae Stoliczka, 1868
- Pachychilidae P. Fischer and Crosse, 1892
- Pagodulinidae Pilsbry, 1924
- Paludomidae Stoliczka, 1868
- Pandoridae Rafinesque, 1815
- Papillodermatidae Wiktor, Martin and Castillejo, 1990
- Paracoryphellidae M. C. Miller, 1971
- Parallelodontidae Dall, 1898
- Pararrhopaliidae Salvini-Plawen, 1978
- Parhedylidae Thiele, 1931
- Parmacellidae P. Fischer, 1856
- Partulidae Pilsbry, 1900
- Patellidae Rafinesque, 1815
- Pectinidae Rafinesque, 1815
- Pectinodontidae Pilsbry, 1891
- Pediculariidae Gray, 1853
- Peltospiridae McLean, 1989
- Pelycidiidae Ponder and Hall, 1983
- Pendromidae Warén, 1991
- Penicillidae Gray, 1858
- Peraclidae Tesch, 1913
- Periplomatidae Dall, 1895
- Personidae Gray, 1854
- Petricolidae Deshayes, 1831
- Phallomedusidae Golding, Ponder and Byrne, 2007
- Pharidae H. and A. Adams, 1856
- Phaseolidae Scarlato and Starobogatov, 1971
- Phasianellidae Swainson, 1840
- Phenacolepadidae Pilsbry, 1895
- Philinidae Gray, 1850
- Philinoglossidae Hertling, 1932
- Philinorbidae Oskars, Bouchet and Malaquias, 2015
- Philobryidae F. Bernard, 1897
- Philomycidae Gray, 1847
- Pholadidae Lamarck, 1809
- Pholadomyidae King, 1844
- Phyllidiidae Rafinesque, 1814
- Phylliroidae Menke, 1830
- Phyllomeniidae
- Physidae Fitzinger, 1833
- Pickworthiidae Iredale, 1917
- Pinnidae Leach, 1819
- Pinufiidae Er. Marcus and Ev. Marcus, 1960
- Pisaniidae Gray, 1857
- Piseinotecidae Edmunds, 1970
- Placunidae Rafinesque, 1815
- Plakobranchidae Gray, 1840
- Planaxidae Gray, 1850
- Planorbidae Rafinesque, 1815
- Platyhedylidae Salvini-Plawen, 1973
- Plectopylidae Möllendorff, 1898
- Plesiotrochidae Houbrick, 1990
- Pleurobranchaeidae Pilsbry, 1896
- Pleurobranchidae Gray, 1827
- Pleuroceridae P. Fischer, 1885
- Pleurodiscidae Wenz, 1923
- Pleurodontidae Ihering, 1912
- Pleurolidiidae Burn, 1966
- Pleurotomariidae Swainson, 1840
- Plicatulidae Gray, 1854
- Pliopholygidae D. W. Taylor, 1966
- Pneumodermatidae Latrielle, 1825
- Polyceridae Alder and Hancock, 1845
- Polygyridae Pilsbry, 1895
- Pomatiidae Newton, 1891
- Pomatiopsidae Stimpson, 1865
- Poromyidae Dall, 1886
- Potamididae H. Adams and A. Adams, 1854
- Praenuculidae Mcalester, 1969
- Pristilomatidae Cockerell, 1891
- Prochaetodermatidae Salvini-Plawen, 1968
- Proctonotidae Gray, 1853
- Prodentaliidae
- Promachoteuthidae Naef, 1912
- Proneomeniidae
- Propeamussiidae Abbott, 1954
- Proserpinellidae H. B. Baker, 1923
- Proserpinidae Gray, 1847
- Protocuspidariidae Scarlato and Starobogatov, 1983
- Provannidae Warén and Ponder, 1991
- Psammobiidae J. Fleming, 1828
- Pseudococculinidae Hickman, 1983
- Pseudolividae de Gregorio, 1880
- Pseudomelatomidae Morrison, 1966
- Pseudovermidae Thiele, 1931
- Pseudunelidae Rankin, 1979
- Psychroteuthidae Thiele, 1920
- Pteriidae Gray, 1847
- Pterotracheidae Rafinesque, 1814
- Ptychatractidae Stimpson, 1865
- Pulsellidae Scarabino in Boss, 1982
- Pulvinitidae Stephenson, 1941
- Punctidae Morse, 1864
- Pupillidae Turton, 1831
- Pupinidae L. Pfeiffer, 1853
- Pyramidellidae Gray, 1840
- Pyramidulidae Kennard and B. B. Woodward, 1914
- Pyramimitridae Cossmann, 1901
- Pyropeltidae McLean and Haszprunar, 1987
- Pyroteuthidae Pfeffer, 1912
- Quijotidae Ortea, Moro and Bacallado, 2016
- Ranellidae Gray, 1854
- Raphitomidae Bellardi, 1875
- Rastodentidae Ponder, 1966
- Rathouisiidae Heude, 1885
- Retusidae Thiele, 1925
- Rhabdidae Chistikov, 1975
- Rhipidoherpiidae
- Rhizoridae Dell, 1952
- Rhodopidae Ihering, 1876
- Rhopalomeniidae Salvini-Plawen, 1978
- Rhytididae Pilsbry, 1893
- Ringiculidae Philippi, 1853
- Rissoellidae Gray, 1850
- Rissoidae Gray, 1847
- Rissoinidae Stimpson, 1865
- Rostellariidae Gabb, 1868
- Runcinidae H. Adams and A. Adams, 1854
- Sagdidae Pilsbry, 1895
- Samlidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl and Picton, 2017
- Sandalomeniidae
- Sareptidae Stoliczka, 1870
- Saxicavellidae
- Scaliolidae Jousseaume, 1912
- Scaphandridae G. O. Sars, 1878
- Schizochitonidae Dall, 1889
- Scissurellidae Gray, 1847
- Scolodontidae H. B. Baker, 1925
- Sculptariidae Degner, 1923
- Scyllaeidae Alder and Hancock, 1855
- Seguenziidae Verrill, 1884
- Semelidae Stoliczka, 1870
- Semisulcospiridae Morrison, 1952
- Sepiadariidae Fischer, 1882 in 1880-1887
- Sepiidae Leach, 1817
- Sepiolidae Leach, 1817
- Seraphsidae Gray, 1853
- Siliculidae Allen and Sanders, 1973
- Siliquariidae Anton, 1838
- Simpulopsidae Schileyko, 1999
- Simrothiellidae Salvini-Plawen, 1978
- Siphonariidae Gray, 1827
- Skeneidae W. Clark, 1851
- Skeneopsidae Iredale, 1915
- Smeagolidae Climo, 1980
- Solariellidae Powell, 1951
- Solaropsidae H. Nordsieck, 1986
- Solecurtidae d'Orbigny, 1846
- Solemyidae Gray, 1840
- Solenidae Lamarck, 1809
- Spelaeoconchidae A. J. Wagner, 1928
- Spelaeodiscidae Steenberg, 1925
- Sphaeriidae Deshayes, 1855
- Spheniopsidae Gardner, 1928
- Sphincterochilidae Zilch, 1960
- Spiraxidae H. B. Baker, 1939
- Spirulidae Rafinesque, 1815
- Spondylidae Gray, 1826
- Sportellidae Dall, 1899
- Staffordiidae Thiele, 1931
- Stauroteuthidae Grimpe, 1916
- Stenothyridae Tryon, 1866
- Streptaxidae Gray, 1860
- Strictispiridae McLean, 1971
- Strobilopsidae Wenz, 1915
- Strombidae Rafinesque, 1815
- Strophocheilidae Pilsbry, 1902
- Strophomeniidae Salvini-Plawen, 1978
- Struthiolariidae Gabb, 1868
- Succineidae Beck, 1837
- Sutilizonidae McLean, 1989
- Syngenoherpiidae
- Tantulidae Rankin, 1979
- Tateidae Thiele, 1925
- Tegulidae Kuroda, Habe and Oyama, 1971
- Tellinidae Blainville, 1814
- Terebridae Mörch, 1852
- Teredinidae Rafinesque, 1815
- Tergipedidae Bergh, 1889
- Testacellidae Gray, 1840
- Tethydidae Rafinesque, 1815
- Thalassocyonidae F. Riedel, 1995
- Thiaridae Gill, 1871
- Thraciidae Stoliczka, 1870
- Thyasiridae Dall, 1901
- Thysanophoridae Pilsbry, 1926
- Thysanoteuthidae Keferstein, 1866
- Tindariidae Verrill and Bush, 1897
- Titiscaniidae Bergh, 1890
- Tjaernoeiidae Warén, 1991
- Tonnidae Suter, 1913
- Tornatinidae P. Fischer, 1883
- Tornidae Sacco, 1896
- Trapezidae Lamy, 1920
- Tremoctopodidae Tryon, 1879
- Trichodiscinidae H. Nordsieck, 1987
- Trigoniidae Lamarck, 1819
- Trigonochlamydidae Hesse, 1882
- Trimusculidae J. Q. Burch, 1945
- Trinchesiidae F. Nordsieck, 1972
- Triphoridae Gray, 1847
- Trissexodontidae H. Nordsieck, 1987
- Tritoniidae Lamarck, 1809
- Triviidae Trochel, 1863
- Trochaclididae Thiele, 1928
- Trochidae Rafinesque, 1815
- Trochomorphidae Möllendorff, 1890
- Truncatellidae Gray, 1840
- Truncatellinidae Steenberg, 1925
- Tryblidiidae
- Turbinellidae Swainson, 1835
- Turbinidae Rafinesque, 1815
- Turridae H. Adams and A. Adams, 1853
- Turritellidae Lovén, 1847
- Tylodinidae Gray, 1847
- Umbraculidae Dall, 1889
- Ungulinidae Gray, 1854
- Unidentiidae Millen and Hermosillo, 2012
- Unionidae Rafinesque, 1820
- Urocoptidae Pilsbry, 1898
- Urocyclidae Simroth, 1889
- Valloniidae Morse, 1864
- Valvatidae Gray, 1840
- Vampyroteuthidae Thiele in Chun, 1915
- Vanikoridae Gray, 1840
- Velutinidae Gray, 1840
- Veneridae Rafinesque, 1815
- Vermetidae Rafinesque, 1815
- Veronicellidae Gray, 1840
- Verticordiidae Stoliczka, 1871
- Vertiginidae Fitzinger, 1833
- Vesicomyidae Dall and Simpson, 1901
- Vitreledonellidae Robson, 1932
- Vitrinidae Fitzinger, 1833
- Viviparidae Gray, 1847
- Volutidae Rafinesque, 1815
- Volutomitridae Gray, 1854
- Volvatellidae Pilsbry, 1895
- Walvisteuthidae Nesis and Nikitina, 1986
- Wemersoniellidae Scarabino, 1986
- Xanthonychidae Strebel and Pfeffer, 1879
- Xenophoridae Troschel, 1852
- Xylodisculidae Warén, 1992
- Xylophagaidae
- Yoldiidae Dall, 1908
- Zachrysiidae Robinson, Sei and Rosenberg in Sei et al., 2017
- Zebinidae Coan, 1964
- Zerotulidae Warén and Hain, 1996
- Zonitidae Mörch, 1864
Подфамилије
уреди- Acmaeinae Forbes, 1850
- Acremodontinae
- Alycaeinae Gray, 1850
- Ambleminae Rafinesque, 1820
- Angariinae
- Anodontitinae Modell, 1942
- Aspathariinae Modell, 1942
- Astraeinae Davies, 1933
- Bathoxiphinae Chistikov, 1983
- Bathypolypodinae Robson, 1929
- Bellamyinae Rohrbach, 1937
- Calliostomatinae
- Cataeginae
- Caymanabyssiinae
- Cochlostomatinae Kobelt, 1902
- Cranchiinae Pfeffer, 1912
- Cyclophorinae
- Diodorinae
- Diplommatininae L. Pfeiffer, 1857
- Eledoninae Grimpe, 1921
- Eleutheromeniinae
- Emarginulinae
- Entalininae Chistikov, 1979
- Episiphoninae Chistikov, 1975
- Fissurellidinae
- Fissurellinae
- Gadilinae Stoliczka, 1868
- Gadilininae Chistikov, 1975
- Gibbosulinae Bogan, Bolotov, Froufe & Lopes-Lima in Lopes-Lima et al., 2018
- Gibbulinae
- Gonideinae Ortmann, 1916
- Graneledoninae Voss, 1988
- Halistylinae
- Halomeniinae
- Helicininae Férussac, 1822
- Hendersoniinae H. B. Baker, 1926
- Heteroschismoidinae Chistikov, 1982
- Heteroteuthinae Appellöf, 1898
- Homalopomatinae
- Hyriinae Swainson, 1840
- Illicinae Pfeffer, 1912
- Iridininae Swainson, 1840
- Lampadioteuthinae Berry, 1916
- Leilinae Morretes, 1949
- Lioplacinae Gill, 1863
- Liotiinae
- Lophomeniinae
- Lottiinae Gray, 1840
- Lycoteuthinae Pfeffer, 1908
- Margaritiferinae Henderson, 1929
- Margaritinae
- Megaleledoninae Taki, 1961
- Modellnaiinae Brandt, 1974
- Monocondylaeinae Modell, 1942
- Monodontinae
- Mycetopodinae Gray, 1840
- Octopodinae Grimpe, 1921
- Ommastrephinae Posselt, 1891
- Oocorythinae P. Fischer, 1885
- Pararrhopaliinae
- Parreysiinae Henderson, 1935
- Patellinae
- Patelloidinae (Oliver, 1926)
- Planitrochinae
- Pollicariinae
- Pseudococculininae
- Pterocyclinae
- Pupinellinae
- Pupininae
- Rectidentinae Modell, 1942
- Rossinae Appellöf, 1898
- Sepiolinae Appellöf, 1898
- Siphonodentaliinae Tryon, 1884
- Spirostomatinae
- Taoniinae Pfeffer, 1912
- Todarodinae Adam, 1960
- Trochinae
- Turbininae
- Umboniinae
- Unioninae Rafinesque, 1820
- Velesunioninae Iredale, 1934
- Vianinae
- Viviparinae Gray, 1847
Племена
уреди- Acuticostini Starobogatov, 1967
- Amblemini Rafinesque, 1820
- Anodontini Rafinesque, 1820
- Castaliini Morretes, 1949
- Chamberlainiini Bogan, Froufe & Lopes-Lima in Lopes-Lima et al., 2017
- Coelaturini Modell, 1942
- Contradentini Modell, 1942
- Ctenodesmini Pfeiffer, Zieritz, Rahim & Lopes-Lima in Zieritz et al., 2021
- Gonideini Ortmann, 1916
- Hyridellini McMichael, 1956
- Hyriini Swainson, 1840
- Indochinellini Bolotov, Pfeiffer, Vikhrev, & Konopleva in Bolotov et al., 2018
- Lamellidentini Modell, 1942
- Lamprotulini Modell, 1942
- Lampsilini Ihering, 1901
- Lanceolariini Froufe, Lopes-Lima & Bogan in Lopes-Lima et al., 2017
- Leoparreysiini Vikhrev, Bolotov & Kondakov in Bolotov et al., 2017
- Lepidodesmini Huang & Wu in Huang et al., 2019
- Lottiini Gray, 1840
- Parreysiini Henderson, 1935
- Pleurobemini Hannibal, 1912
- Popenaiadini Heard & Guckert, 1970
- Pseudodontini Frierson, 1927
- Quadrulini Ihering, 1901
- Rectidentini Modell, 1942
- Rhipidodontini Starobogatov, 1970
- Schepmaniini Lopes-Lima, Pfeiffer & Zieritz in Zieritz et al., 2021
- Unionini Rafinesque, 1820
Родови
уреди- Abra Lamarck, 1818
- Abralia Gray, 1849
- Abraliopsis Joubin, 1896
- Acanthina Fischer de Waldheim, 1807
- Acanthocardia J. E. Gray, 1851
- Acanthochitona Gray, 1821
- Acanthodoris Gray, 1850
- Acanthonemia Thiele, 1913
- Acanthopleura Guilding, 1829
- Acanthotrophon Hertlein and Strong, 1951
- Acar Gray, 1857
- Acella Haldeman, 1841
- Acesta H. and A. Adams, 1858
- Acharax Dall, 1908
- Achatina Lamarck, 1799
- Achatinella Swainson, 1828
- Acila H. Adams and A. Adams, 1858
- Acirsa Morch, 1857
- Aclis Loven, 1846
- Aclistothyra McGinty, 1955
- Acmaea Eschscholtz, 1833
- Acostaea d'Orbigny, 1851
- Acremodonta Marshall, 1983
- Acroloxus Beck, 1837
- Acroptycha Crosse and Fischer, 1877
- Acteocina Gray, 1847
- Acteon Montfort, 1810
- Actinonaias Crosse & Fischer, 1894
- Aculamprotula Wu, Liang, Wang & Ouyang, 1999
- Acuticosta Simpson, 1900
- Adalaria Bergh, 1879
- Addisonia Dall, 1882
- Adelopoma Doering, 1884
- Adipicola Dautzenberg, 1927
- Admete Moller, 1842
- Adontorhina Berry, 1947
- Adrana Adams and Adams, 1858
- Adula H. Adams and A. Adams, 1857
- Aegires Lovén, 1844
- Aenigmabonus Moskalev, 1978
- Aeolidia Cuvier, 1797
- Aeolidiella Bergh, 1867
- Aequipecten P. Fischer, 1886
- Aesopus Gould, 1860
- Aforia Dall, 1889
- Afroditropus Bequaert and Clench, 1936
- Afropomus Pilsbry and Bequaert, 1927
- Agathodonta Cossmann, 1918
- Agathotoma Cossmann, 1889
- Agatrix R. Petit, 1967
- Aglaja Renier, 1804
- Agriopoma Dall, 1902
- Akera O. F. Müller, 1776
- Akiodoris Bergh, 1879
- Alaba H. Adams and A. Adams, 1853
- Alasmidonta Say, 1818
- Alasminota Ortmann, 1914
- Alathyria Iredale, 1934
- Alcadia Gray, 1840
- Alderia Allman, 1845
- Aldisa Bergh, 1878
- Alexandromenia Heath, 1911
- Alexania Strand, 1928
- Algamorda Dall, 1918
- Alia H. Adams and A. Adams, 1853
- Aligena I. Lea, 1843
- Allogona Pilsbry, 1939
- Allonautilus Ward and Saunders, 1997
- Allopeas H. B. Baker, 1935
- Alluroteuthis Odhner, 1923
- Alvania Risso, 1826
- Alycaeus Gray, 1850
- Amaea H. Adams and A. Adams, 1854
- Amauropsis Mörch, 1857
- Amblema Rafinesque, 1820
- Ameloctopus Norman, 1992
- Americardia Stewart, 1930
- Americhiton Watters, 1990
- Amiantis Carpenter, 1884
- Amicula Gray, 1847
- Ammonicera Vayssiére, 1893
- Ammonitella J. G. Cooper, 1868
- Amnicola Gould and Haldeman, 1840
- Amphicyclotus Crosse and Fischer, 1879
- Amphigyra Pilsbry, 1906
- Amphinemia Thiele, 1894
- Amphiplica Haszprunar, 1988
- Amphissa H. Adams and A. Adams, 1853
- Amphithalamus Carpenter, 1864
- Amphitretus Hoyle, 1885
- Amuranodonta Moskvicheva, 1973
- Amusium Roding, 1798
- Amygdalum Megerle von Muhlfeld, 1811
- Anabathron Frauenfeld, 1867
- Anachis H. and A. Adams, 1853
- Anacithara Hedley, 1922
- Anadara Gray, 1847
- Anadenulus Cockerell, 1890
- Anamenia Nierstrasz, 1908
- Anatina Schumacher, 1817
- Anatinella G.B. Sowerby I in G.B. Sowerby I and J.C. Sowerby, 1833
- Anatoma Fleming, 1828
- Ancilla Lamarck, 1799
- Ancistrobasis Dall, 1889
- Ancistrocheirus Gray, 1849
- Ancistrolepis Dall, 1894
- Ancistroteuthis Gray, 1849
- Ancotrema H. B. Baker, 1931
- Ancula Loven, 1846
- Ancylus O. F. Muller, 1774
- Anemina Haas, 1969
- Angaria Roeding, 1798
- Anguispira E. S. Morse, 1864
- Angustipes Colosi, 1922
- Anidolyta Willan, 1987
- Anisodonta Deshayes, 1858
- Anisodoris Bergh, 1898
- Annulipulsellum Scarabino, 1986
- Anodonta Lamarck, 1799
- Anodontia Link, 1807
- Anodontites Bruguière, 1792
- Anodontoides Simpson in F. C. Baker, 1898
- Anomalocardia Schumacher, 1817
- Anomia Linnaeus, 1758
- Anostomella Von Martens, 1867
- Antalis H. & A. Adams, 1854
- Anticlimax Pilsbry and McGinty, 1946
- Antillophos Woodring, 1928
- Antiplanes Dall, 1902
- Antisabia Iredale, 1937
- Antisolarium Finlay, 1927
- Antrobia Hubricht, 1971
- Antrorbis Hershler and F. G. Thompson, 1990
- Antroselates Hubricht, 1963
- Anulidentalium Chistikov, 1975
- Anulotaia Brandt, 1968
- Anxietas Iredale, 1917
- Aorotrema Schwengel and McGinty, 1942
- Aperiovula Cate, 1973
- Aperostoma Troschel, 1847
- Aphaostracon F. G. Thompson, 1968
- Aphelodoris von Ihering, 1886
- Aphrodoctopus Roper and Mangold, 1992
- Aplexa Fleming, 1820
- Aplysia Linnaeus, 1767
- Aplysiopsis Deshayes, 1835
- Aporrhais da Costa, 1778
- Appalachina Pilsbry, 1940
- Aquilonaria Dall, 1886
- Arca Linnaeus, 1758
- Archaeomenia Thiele, 1906
- Archecharax Thompson, 1980
- Archidoris Bergh, 1878
- Archiphysa Taylor, 2003
- Architectonica Roding, 1798
- Architeuthis Steenstrup, 1857 in Harting, 1860
- Arcidens Simpson, 1900
- Arcidopsis Simpson, 1900
- Arcinella Schumacher, 1817
- Arcopagia Leach in Brown, 1827
- Arcopsis Von Koenen, 1885
- Arctica Schumacher, 1817
- Arctomelon Dall, 1915
- Arcuatula Soot-Ryen, 1955
- Arculus Monterosato, 1909
- Arene H. Adams and A. Adams, 1854
- Argonauta Linnaeus, 1758
- Argopecten Monterosato, 1889
- Arinia H. and A. Adams, 1856
- Ariolimax Morch, 1859
- Arion Ferussac, 1819
- Armina Rafinesque, 1814
- Arotonaias Martens, 1900
- Asaphis Modeer, 1793
- Ascobulla Ev. Marcus, 1972
- Ashmunella Pilsbry and Cockerell, 1899
- Asolene d'Orbigny, 1837
- Aspatharia Bourguignat, 1885
- Aspella Morch, 1877
- Asperiscala de Boury, 1909
- Assiminea Fleming, 1828
- Astarte J. Sowerby, 1816
- Astele Swainson, 1855
- Asterophila Randall and Heath, 1912
- Asthelys Quinn, 1987
- Asthenothaerus Carpenter, 1864
- Astraea Röding, 1798
- Astralium Link, 1807
- Astyris H. Adams and A. Adams, 1853
- Atagema Gray, 1850
- Athearnia Morrison, 1971
- Atlanta Lesueur, 1817
- Atlanticoncha Smith, Pfeiffer & Johnson, 2020
- Atrina Gray, 1847
- Attiliosa Emerson, 1968
- Atys Montfort, 1810
- Aulopoma Troschel, 1847
- Austraeolis Burn, 1962
- Austroneaera Powell, 1937
- Austrorossia Berry, 1918
- Austrotrophon Dall, 1902
- Axelella Petit, 1988
- Axinodon A. E. Verrill and Bush, 1898
- Axinopsida Keen and Chavan, 1951
- Axinulus A. E. Verrill and Bush, 1898
- Babakina Roller, 1972
- Babelomurex Coen, 1922
- Bactrocythara Woodring, 1922
- Baeolidia Bergh, 1888
- Bailya M. Smith, 1944
- Balcis Leach, 1847
- Balconorbis Hershler and Longley, 1986
- Balwantia Prashad, 1919
- Bandabyssia Moskalev, 1976
- Bankia Gray, 1842
- Bankivia Beck In Krauss
- Baptodoris Bergh, 1884
- Barbatia Gray, 1847
- Barleeia Clark, 1853
- Barnea Risso, 1826
- Bartlettia H. Adams, 1867
- Bartschia Rehder, 1943
- Barynaias Crosse & Fischer, 1894
- Basiliomya Bayer, 1971
- Basilissa Watson, 1879
- Basilissopsis Dautzenberg and Fischer, 1897
- Basterotia Hoernes, 1859
- Bathothauma Chun, 1906
- Bathoxiphus Pilsbry & Sharp, 1897
- Bathyarca Kobelt, 1891
- Bathybela Kobelt, 1905
- Bathybembix Crosse, 1893
- Bathybuccinum Golikov and Sirenko, 1988
- Bathycadulus Scarabino, 1995
- Bathylepeta Moskalay, 1977
- Bathypelta Moskalev, 1971
- Bathyphytophilus Moskalev, 1978
- Bathypolypus Grimpe, 1921
- Bathysciadium Dautzenberf and Fischer, 1901
- Bathyteuthis Hoyle, 1885
- Bathytoma Harris and Burrows, 1891
- Batillaria Benson, 1842
- Batoteuthis Young and Roper, 1968
- Bellardiella Tapparone-canefri, 1883
- Bellaspira Conrad, 1868
- Belonella Lane, 1957
- Bentharca Verrill and Bush, 1898
- Bentheledone Robson, 1932
- Benthobia Dall, 1889
- Benthoctopus Grimpe, 1921
- Benthomangelia Thiele, 1925
- Benthonella Dall, 1889
- Benthonellania Dall, 1889
- Berghia Trinchese, 1877
- Beringiana Starobogatov in Zatravkin, 1983
- Beringius Dall, 1886
- Bermudaclis
- Bernardina Dall, 1910
- Berryteuthis Naef, 1921
- Berthelinia Gardiner, 1936
- Berthella de Blainville, 1825
- Berthellina Gardiner, 1936
- Besla Dall and Bartsch, 1904
- Bineurus Simpson, 1900
- Binneya J. G. Cooper, 1863
- Biomphalaria Preston, 1910
- Birasoherpia Salvini-Plawen, 1978
- Birgella F. C. Baker, 1926
- Biserramenia Salvini-Plawen, 1967
- Bithynia Leach, 1818
- Bittiolum Cossmann, 1906
- Bittium Gray, 1847
- Blauneria Shuttleworth, 1854
- Bolitaena Steenstrup, 1859
- Bolma Risso, 1826
- Bonus Moskalev, 1971
- Boonea Robertson, 1978
- Boreacola Bernard, 1979
- Boreocingula Golikov and Kussakin, 1974
- Boreoscala
- Boreotrophon Fischer, 1884
- Bornella
- Bornia Philippi, 1836
- Borsonella Dall, 1918
- Bosellia Trinchese, 1891
- Bostrychocentrum
- Botelloides Strand, 1928
- Bothriopupa Pilsbry, 1898
- Botula Mörch, 1853
- Bourciera Pfeiffer, 1852
- Brachidontes Swainson, 1840
- Brachioteuthis Verrill, 1881 in 1880-1881
- Brachycythara Woodring, 1928
- Bractechlamys Iredale, 1939
- Bradybaena Beck, 1837
- Branchyostomia
- Brazzaea Bourguignat, 1885
- Brevinucula Thiele, 1934
- Broderipia Gray, 1847
- Brookula Iredale, 1912
- Buccinum Linnaeus, 1758
- Buchanania Lesson, 1830
- Buckleyia Higgins, 1872
- Bufonaria Schumacher, 1817
- Bulbus Brown, 1839
- Buldowskia Moskvicheva, 1973
- Bulimnaea Haldeman, 1841
- Bulimulus Leach, 1814
- Bulinus Müller, 1781
- Bulla Linnaeus, 1758
- Bullina Férussac, 1822
- Burnupia Walker, 1912
- Bursa Roding, 1798
- Bursatella de Blainville, 1817
- Bushia Dall, 1886
- Busycon Röding, 1798
- Busycotypus Wenz, 1943
- Bythinella Moquin-Tandon, 1856
- Cabestana Röding, 1798
- Cadlina Bergh, 1878
- Caducifer Dall, 1904
- Cadulus Philippi, 1844
- Caecum Fleming, 1813
- Caelatura Conrad, 1853
- Cahuillus Roth, 1996
- Calaperostoma Pilsbry, 1935
- Calidviana H. B. Baker, 1954
- Calinaticina J. Q. Burch and Campbell, 1963
- Caliphylla A. Costa, 1867
- Callianella R. B. Newton, 1891
- Calliobasis Marshall, 1983
- Calliodentalium Habe, 1964
- Calliostoma Swainson, 1840
- Calliotropis Seguenza, 1903
- Callista Poli, 1791
- Callistochiton Dall, 1879
- Callistoplax Dall, 1882
- Callochiton Gray, 1847
- Callonaia Simpson, 1900
- Calloplax Thiele, 1909
- Callumbonella Thiele, 1924
- Calma
- Calotrophon Hertlien and Strong, 1951
- Calybium Morelet, 1881
- Calycidoris Abraham, 1876
- Calyptoconcha Bouchet and Warén, 1993
- Calyptogena Dall, 1891
- Calyptraea Lamarck, 1799
- Cambarunio Watters, 2018
- Campeloma Rafinesque, 1819
- Cancellaria Lamarck, 1799
- Canculus Montfort, 1810
- Candidula Kobelt, 1871
- Cantharidus Montfort, 1810
- Cantharus Roding, 1798
- Caporbis Bartsch, 1915
- Capulacmaea M. Sars, 1859
- Capulus Montfort, 1810
- Caracolus Montfort, 1810
- Cardiapoda D'Orbigny, 1835
- Cardiomya A. Adams, 1864
- Cardita Bruguière, 1792
- Carditamera Conrad, 1838
- Carditella E. A. Smith, 1881
- Carditopsis E. A. Smith, 1881
- Cardium Linnaeus, 1758
- Careliopsis Morch, 1875
- Carenzia Quinn, 1983
- Caribachlamys Waller, 1993
- Carinacauda Leonard, Chichester, Richart and Young, 2011
- Carinapex
- Carinaria Lamarck, 1801
- Carinoturris Bartsch, 1944
- Carychium O. F. Müller, 1773
- Caryocorbula Bruguiere, 1792
- Casmaria H. Adams and A. Adams, 1853
- Cassis Scopoli, 1777
- Castalia Lamarck, 1819
- Castaliella Simpson, 1900
- Cataegis Mclean and Quinn, 1987
- Catinella Pease, 1870
- Catriona Winckworth, 1941
- Caudiculatus Simpson, 1900
- Cavolinia Abildgaard, 1791
- Caymanabyssia Moskalev, 1976
- Cecilioides Férussac, 1814
- Cecina A. Adams, 1861
- Cellana H. Adams, 1869
- Cenchritis von Martens, 1900
- Cepaea Held, 1837
- Cephalobranchia Bonnevie, 1913
- Cerastoderma Poli, 1795
- Ceratophyllidia Elliot, 1903
- Ceratostoma Herrmannsen, 1846
- Ceratozona Dall, 1882
- Cerberilla Bergh, 1873
- Ceres Gray, 1856
- Cerion Röding, 1798
- Cerithidea Swainson, 1840
- Cerithidium
- Cerithiella Verrill, 1882
- Cerithiopsida Bartsch, 1911
- Cerithiopsidella Bartsch, 1911
- Cerithiopsina Bartsch, 1911
- Cerithiopsis Forbes and Hanley, 1851
- Cerithium Bruguiere, 1789
- Ceritoturris
- Cernuella Schluter, 1838
- Cerodrillia Bartsch and Rehder, 1939
- Cetoconcha Dall, 1889
- Chaceia Turner, 1855
- Chaenaxis Pilsbry and Ferriss, 1906
- Chaetoderma Loven, 1844
- Chaetopleura Shuttleworth, 1853
- Chama Linnaeus, 1758
- Chamaearionta Berry, 1930
- Chamalycaeus Kobelt and Moellendroff, 1897
- Chambardia Bourguignat in Servain, 1890
- Chamberlainia Simpson, 1900
- Chamelea Morch, 1853
- Charisma Hedley, 1915
- Charonia Gistel, 1848
- Chauvetea
- Chauvetia Monterosato, 1884
- Cheilea Modeer, 1793
- Chelidonopsis Ancey, 1887
- Chelidonura A. Adams, 1850
- Chevroderma Scheltema, 1985
- Chicomurex Arakawa, 1964
- Chicoreus Montfort, 1810
- Chione Megerle von Mühlfeld, 1811
- Chionista Keen, 1958
- Chiroteuthis D'Orbigny, 1841
- Chistikovia Scarabino, 1995
- Chiton Linnaeus, 1758
- Chlamydoconcha Dall, 1884
- Chlamylla Bergh, 1886
- Chlamys Röding, 1798
- Chondrocyclus Ancey, 1898
- Chondropoma L. Pfeiffer, 1847
- Choneplax Dall, 1882
- Choriplax Pilsbry, 1894
- Choristella Bush, 1897
- Choristes Carpenter in Dawson, 1872
- Choristodon Jonas, 1844
- Chromodoris Alder and Hancock, 1855
- Chrysallida Carpenter, 1857
- Chrysostoma Swainson, 1840
- Chtenopteryx Appellöf, 1890
- Chunioteuthis Grimpe, 1916
- Cidarina Dall, 1909
- Cincinnatia Pilsbry, 1891
- Cingula Fleming, 1828
- Cingulina A. Adams, 1860
- Cingulopsis Fretter and Patil, 1958
- Cinysca Kilburn, 1970
- Cionella Jeffreys, 1830
- Cipangopaludina Hannibal, 1912
- Circomphalus Klein, 1853
- Circulus Jeffreys, 1865
- Cirroteuthis Eschricht, 1836
- Cirrothauma Chun, 1911
- Cirsochilus Cossmann, 1888
- Cirsonella Angas, 1877
- Cirsotrema Morch, 1852
- Cistopus Gray, 1849
- Cittarium Philippi, 1847
- Clappia Walker, 1909
- Clathromangelia di Monterosato, 1884
- Clathrus
- Clathurella Carpenter, 1857
- Clausinella J. E. Gray, 1851
- Clavus Montfort, 1810
- Cleba
- Clinocardium Keen, 1936
- Clinopegma Grant and Gale, 1931
- Clio Linnaeus, 1767
- Clione Pallas, 1774
- Cliopsis Troschel, 1854
- Clostophis Benson, 1860
- Clypidina Gray, 1847
- Coccocrater Haszpruner, 1987
- Coccodentalium Sacco, 1896
- Coccopigya Marshall, 1986
- Cocculina Dall, 1882
- Cocculinella Thiele, 1909
- Cochlespira Conrad, 1865
- Cochlicella Ferussac, 1820
- Cochlicopa Férussac, 1821
- Cochliolepis Stimpson, 1858
- Cochliopa Stimpson, 1865
- Cochliopina Morrison, 1946
- Cochlodesma Couthouy, 1839
- Cochlodinella Pilsbry and Vanatta, 1898
- Cochlostoma Jan, 1830
- Codakia Scopoli, 1777
- Coelatura Conrad, 1853
- Coelostemma Dall, 1895
- Coleophysis
- Colga Bergh, 1880
- Colligyrus Hershler, 1999
- Collisella Dall, 1871
- Colotrachelus Marshall, 1986
- Colpodaspis M. Sars, 1870
- Colubraria Schumacher, 1817
- Columbarium Martens, 1881
- Columbella Lamarck, 1799
- Columbellopsis Bucquoy, Dautzenberg and Dollfus, 1882
- Columella Westerlund, 1878
- Colus Röding, 1798
- Comarmondia Monterosato, 1884
- Compressidens Pilsbry & Sharp, 1897
- Compressidentalium Habe, 1963
- Compsodrillia Woodring, 1928
- Compsomyax Stewart, 1930
- Conchocele Gabb, 1866
- Congeria Partsch, 1835
- Conjectura Finlay, 1926
- Connexochiton Kaas, 1979
- Conualevia Collier and Farmer, 1964
- Conus Linnaeus, 1758
- Cookia Lesson, 1832
- Cooperella Carpenter, 1864
- Copulabyssia Haszprunar, 1988
- Coralliophaga de Blainville, 1824
- Coralliophila H. Adams and A. Adams, 1853
- Corambe Bergh, 1869
- Corbicula Megerle von Mühlfeld, 1811
- Corbula Bruguiere, 1797
- Corolla Dall, 1871
- Coronadoa Bartsch, 1946
- Coryphella Gray, 1850
- Cosa Finlay, 1926
- Cosmetalepas Iredale, 1924
- Cosmioconcha Dall, 1913
- Cosmotriphora Olsson and Harbison, 1953
- Costasiella Pruvoa-Fol, 1951
- Costentalina Chistikov, 1982
- Costoanachis Sacco, 1890
- Couthouyella Bartsch, 1909
- Cranchia Leach, 1817
- Cranopsis A. Adams, 1860
- Craspedochiton Shuttleworth, 1853
- Craspedopoma Pfeiffer, 1847
- Craspedotropis Blanford, 1864
- Crassadoma Bernard, 1986
- Crassatella Lamarck, 1799
- Crassicardia Conrad, 1838
- Crassinella Guppy, 1874
- Crassispira Swainson, 1840
- Crassostrea Sacco, 1897
- Cratena Bergh, 1864
- Creedonia Martins, 1996
- Crenella T. Brown, 1827
- Crenilabium Cossmann, 1889
- Crepidula Lamarck, 1799
- Crepipatella Lesson, 1831
- Crepitacella Guppy, 1867
- Creseis Rang, 1828
- Crimora Alder and Hancock, 1855
- Cristaria Schumacher, 1817
- Crocidopoma Shuttleworth, 1857
- Crockerella Hertlein and Strong, 1951
- Crossata Jousseaume, 1881
- Crossea A. Adams, 1865
- Crosseola Iredale, 1924
- Crossopoma Von Martens, 1891
- Crucibulum Schumacher, 1817
- Cryoturris Woodring, 1928
- Cryptobranchia Middendorff, 1851
- Cryptochiton Middendorff, 1847
- Cryptoconchus Blainville in Burrow, 1815
- Cryptomastix Pilsbry, 1939
- Cryptomya Conrad, 1848
- Cryptonatica Dall, 1892
- Cryptopecten Dall, Bartsch and Rehder, 1938
- Cryptoplax Blainville, 1818
- Ctena Mörch, 1860
- Ctenodesma Simpson, 1900
- Cucullaea Lamarck, 1801
- Cucumerunio Iredale, 1934
- Cultellus Schumacher, 1817
- Cumanotus Odhner, 1907
- Cumberlandia Ortmann, 1912
- Cumingia G. B. Sowerby I, 1833
- Cuna Hedley, 1902
- Cuneopsis Simpson, 1900
- Curtitoma Bartsch, 1941
- Cuspidaria Nardo, 1840
- Cuthona Alder and Hancock, 1855
- Cuvierina Boas, 1886
- Cyathodonta Conrad, 1849
- Cyathopoma Blanford, 1861
- Cyclinella Dall, 1902
- Cyclocardia Conrad, 1867
- Cyclojamaicia Bartsch, 1942
- Cyclonaias Pilsbry in Ortmann & Walker, 1922
- Cyclopecten A. E. Verrill, 1897
- Cyclophorus Montfort, 1810
- Cyclopilsbrya Bartsch, 1942
- Cycloryx Goodwin-austen, 1914
- Cyclostrema Marryat, 1818
- Cyclostremella Bush, 1897
- Cyclostremiscus Pilsbry and Olsson, 1945
- Cyclosurus Morelet, 1881
- Cycloteuthis Joubin, 1919
- Cyclothyca Stearns, 1891
- Cyclotus Swainson, 1840
- Cyclovendreysia Bartsch, 1942
- Cyerce Bergh, 1870
- Cylichna Loven, 1846
- Cylichnella
- Cylichnium Dall, 1908
- Cylindrobulla P. Fischer, 1857
- Cymakra Gardner, 1937
- Cymatioa Berry, 1964
- Cymatium Roding, 1798
- Cymatoica Dall, 1889
- Cymatosyrinx Dall, 1889
- Cymbovula Cate, 1974
- Cymbulia Peron and Lesueur, 1810
- Cyphoma Roding, 1798
- Cypraea Linnaeus, 1758
- Cypraecassis Stutchbury, 1837
- Cyprogenia Agassiz, 1852
- Cyrenoida Joannis, 1835
- Cyrtodaria Reuss, 1801
- Cyrtonaias Crosse & Fischer, 1894
- Cyrtopleura Tryon, 1862
- Cyrtotoma Moerch, 1852
- Cystiscus Stimpson, 1865
- Cythnia Carpenter, 1864
- Cytora Kobelt and Moellendorff, 1897
- Dacrydium Torell, 1859
- Daedalochila Beck, 1837
- Dalium Dall, 1889
- Danilia Brusina, 1865
- Daphnella Hinds, 1844
- Daronia A. Adams, 1881
- Dasyscias F. G. Thompson and Hershler, 1991
- Decatopecten G. B. Sowerby II, 1839
- Decipifus Olsson and McGinty, 1958
- Decipula Jeffreys, 1881
- Decoriatrivia Cate, 1979
- Delectopecten Stewart, 1930
- Delonovolva C. N. Cate, 1973
- Delphinonaias Crosse & Fischer, 1894
- Dendostrea Swainson, 1835
- Dendrodoris Ehrenberg, 1831
- Dendrofissurella Mclean and Kilburn, 1986
- Dendronotus Alder and Hancock, 1845
- Dendropoma Morch, 1861
- Dentalium Linnaeus, 1758
- Dentimargo Cossmann, 1899
- Dentistyla Dall, 1889
- Depressiscala de Boury, 1909
- Dermatomya Dall, 1889
- Dermomurex di Monterosato, 1890
- Deroceras Rafinesque, 1820
- Desmopterus Chun, 1889
- Detracia Gray In Turton, 1840
- Diacavolinia Van der Spoel, 1987
- Diacria Gray, 1847
- Diala A. Adams, 1861
- Diancta Von Martens, 1867
- Diaphana Brown, 1827
- Diaphorodoris Iredale and O'Donoghue, 1923
- Diastoma Deshayes, 1850
- Diaulula Bergh, 1879
- Diaurora Cockerell, 1903
- Dicata Schmekel, 1967
- Didianema Woodring, 1928
- Digitaria S. Wood, 1853
- Dillwynella Dall, 1889
- Diloma Philippi, 1845
- Dimya Roualt, 1848
- Dimyella Moore, 1969
- Dinocardium Dall, 1900
- Dinomenia Nierstrasz, 1902
- Dinoplax Dall, 1882
- Diodora J. E. Gray, 1821
- Dioryx Benson, 1859
- Diplodon Spix & Wagner, 1827
- Diplodonta Bronn, 1831
- Diplodontites Marshall, 1922
- Diplommatina Benson, 1849
- Diplosolenodes Thome, 1976
- Diplothyra Tryon, 1862
- Dirona MacFarland, 1905
- Dischides Jeffreys, 1867
- Discodoris Bergh, 1877
- Discomya Simpson, 1900
- Disconaias Crosse & Fischer, 1894
- Discotectonica Marwick, 1931
- Discoteuthis Young and Roper, 1969
- Discurria Lindberg, 1988
- Discus Fitzinger, 1833
- Distorsio Roding, 1798
- Ditropis Blanford, 1869
- Divalinga Chavan, 1951
- Divaricella von Martens, 1880
- Divariscintilla Powell, 1932
- Dolabrifera Gray, 1847
- Dolicholatirus Bellardi, 1884
- Donax Linnaeus, 1758
- Dondersia Hubrecht, 1888
- Dondice Er. Marcus, 1958
- Doridella Verrill, 1870
- Doridium Meckel, 1809
- Doridunculus G. O. Sars, 1878
- Doriopsilla Bergh, 1880
- Doris Linnaeus, 1758
- Dorsopsis Thore, 1949
- Dorymenia Heath, 1911
- Dosidicus Steenstrup, 1857
- Dosinia Scopoli, 1777
- Doto Oken, 1815
- Drechselia Joubin, 1931
- Dreissena Beneden, 1835
- Drepanomenia Heath, 1911
- Drepanotrema Crosse and P. Fischer, 1880
- Drillia Gray, 1838
- Drilliola Locard, 1897
- Driomenia Heath, 1911
- Dromus Simpson, 1900
- Drupa Röding, 1798
- Drupinia Dall, 1923
- Dryachloa F. G. Thompson and H. G. Lee, 1980
- Drymaeus Albers, 1850
- Echininus Clench and Abbott, 1942
- Echinogurges Quinn, 1979
- Echyridella McMichael & Hiscock, 1958
- Ecrobia Stimpson, 1865
- Egea Joubin, 1933
- Elachisina Dall, 1918
- Elachorbis Iredale, 1915
- Elaeocyma Dall, 1918
- Eledone Leach, 1817
- Eledonella Verrill, 1884
- Eleutheromenia Salvini-Plawen, 1967
- Elgonocyclus Verdcourt, 1982
- Elimia H. Adams and A. Adams, 1854
- Ellipsaria Rafinesque, 1820
- Elliptio Rafinesque, 1819
- Elliptoideus Frierson, 1927
- Ellobium Roding, 1798
- Elongaria Haas, 1913
- Elysia Risso, 1818
- Emarcusia Roller, 1972
- Emarginella Pilsbry, 1890
- Emarginula Lamarck, 1801
- Embletonia Alder and Hancock, 1851
- Empleconia Dall, 1908
- Enaeta H. Adams and A. Adams, 1853
- Engina Gray, 1839
- Engoniophos Woodring, 1929
- Ennucula Iredale, 1931
- Enoplochiton Gray, 1847
- Enoploteuthis D'Orbigny in Rüppell, 1844
- Ensidens Frierson, 1911
- Ensis Schumacher, 1817
- Ensitellops Olsson and Harbison, 1953
- Entalina Monterosato, 1872
- Entalinopsis Habe, 1957
- Entemnotrochus Fischer, 1885
- Enteroctopus Rochebrune and Mabille, 1889
- Enteroxenos Bonnevie, 1902
- Entocolax Voigt, 1888
- Entoconcha J. Muller, 1852
- Entodesma Phillips, 1845
- Entovalva Voeltzkow, 1890
- Eobania P. Hesse, 1913
- Eogonatus Nesis, 1972
- Epicynia Morch, 1875
- Epilepton Dall, 1899
- Epilucina Dall, 1901
- Epimenia Nierstrasz, 1908
- Epioblasma Rafinesque, 1831
- Epirhabdoides Steiner, 1999
- Episcynia Morch, 1875
- Episiphon Pilsbry & Sharp, 1897
- Epitonium Roding, 1798
- Erato Risso, 1826
- Eratoidea Weinkauff, 1879
- Ercolania Trinchese, 1872
- Eremarionta Pilsbry, 1913
- Eremariontoides Miller, 1981
- Eremopyrgus Hershler, 1999
- Erginus Jeffreys, 1877
- Erinna H. Adams and A. Adams, 1855
- Erosaria Troschel, 1863
- Ersilia di Monterosato, 1872
- Ervilia Turton, 1822
- Erycina Lamarck, 1805
- Etheria Lamarck, 1807
- Ethminolia Iredale, 1924
- Euaxoctopus Voss, 1971
- Eubela Dall, 1889
- Eubranchus Forbes, 1838
- Euchelus Philippi, 1847
- Euchemotrema Archer, 1939
- Euciroa Dall, 1881
- Eucithara
- Eucleoteuthis Berry, 1916
- Euconulus Reinhardt, 1883
- Eucrassatella Iredale, 1924
- Eudentalium Cotton & Godfrey, 1933
- Eudolium Dall, 1889
- Eudoxochiton Shuttleworth, 1853
- Euglandina P. Fischer and Crosse, 1870
- Eulima Risso, 1826
- Eulimastoma Bartsch, 1904
- Eulimella Gray, 1847
- Eulimostraca Bartsch, 1917
- Eulithidium Pilsbry, 1898
- Eumetula Thiele, 1912
- Eupera Bourguignat, 1854
- Eupleura H. Adams and A. Adams, 1853
- Euprymna Steenstrup, 1887
- Eurynia Rafinesque, 1820
- Euspira Agassiz in Sowerby, 1838
- Eutrochaetella Fischer, 1885
- Euvola Dall, 1898
- Evalea A. Adams, 1860
- Exilioidea Grant and Gale, 1931
- Fabella Conrad, 1863
- Facelina Alder and Hancock, 1855
- Falcidens Salvini-Plawen, 1968
- Falsicingula Habe, 1958
- Falsimargarita Powell, 1951
- Farcimen Troschel, 1847
- Farcimoides Bartsch, 1942
- Fargoa Robertson, 1978
- Fartulum Carpenter, 1857
- Fasciolaria Lamarck, 1799
- Favartia Jousseaume, 1880
- Favorinus M. E. Gray, 1850
- Fedikovella Moskalev, 1976
- Felaniella
- Felimare
- Fenimorea
- Ferreiraella Sirenko, 1988
- Ferrissia Walker, 1903
- Ficus Röding, 1798
- Filopaludina Habe, 1964
- Fimbria Megerle von Mühlfeld, 1811
- Finella A. Adams, 1860
- Fiona Alder and Hancock, 1851
- Firoloida Lesueur, 1817
- Fisherola Hannibal, 1912
- Fissidentalium Fischer, 1885
- Fissurella Bruguiere, 1789
- Fissurellidea D'Orbigny, 1841
- Fissurisepta Sequenza, 1863
- Flabellina Voigt, 1834
- Flabellinopsis MacFarland, 1966
- Floridiscrobs Pilsbry and McGinty, 1949
- Floridobia F. G. Thompson and Hershler, 2002
- Fluminicola Stimpson, 1865
- Fluxinella Marshall, 1983
- Folinia Crosse, 1868
- Fontigens Pilsbry, 1933
- Forcepimenia Salvini-Plawen, 1968
- Forreria Jousseaume, 1880
- Fossarina A. Adams and Angas, 1864
- Fossarus Philippi, 1841
- Fossula Lea, 1870
- Fowlerina Pelseneer, 1906
- Fragum Roding, 1798
- Friersonia Ortmann, 1912
- Frigidoalvania Waren, 1974
- Froekenia Hoyle, 1904
- Fulmentum Fischer, 1884
- Fumonelix Emberton, 1991
- Fusconaia Simpson, 1900
- Fusinus Rafinesque, 1815
- Fusitriton Cossmann, 1903
- Fusopsis Ravn, 1939
- Fustiaria Stoliczka, 1868
- Fusulculus Bouchet and Vermeij, 1997
- Gabrielona Iredale, 1917
- Gadila Gray, 1847
- Gadilina Foresti, 1895
- Gafrarium Roding, 1798
- Galba Schrank, 1803
- Galeomma Turton, 1825
- Galiteuthis Joubin, 1898
- Ganesa Jeffreys, 1883
- Gari Schumacher, 1817
- Gassiesia Clench, 1949
- Gastrochaena Spengler, 1783
- Gastrocopta Wollaston, 1878
- Gastrodonta Albers, 1850
- Gastropteron Kosse, 1813
- Gastroptychia Kobelt and Moellendorff, 1900
- Gaza Watson, 1879
- Geitodoris Bergh, 1892
- Gemma Deshayes, 1853
- Gemmula Weinkauff, 1875
- Genitoconia Salvini-Plawen, 1967
- Geophorus Fischer, 1885
- Georissa Blanford, 1884
- Gephyroherpia Salvini-Plawen, 1978
- Gerdiella Olsson and Bayer, 1972
- Germainaia Graf & Cummings, 2009
- Geukensia Van de Poel, 1959
- Gibberula Swainson, 1840
- Gibbosula Simpson, 1900
- Gibbula
- Gillia Stimpson, 1865
- Glans Megerle von Muhlfeld, 1811
- Glaucus Forster, 1777
- Gleba Forskal, 1776
- Glebula Conrad, 1853
- Gliabates Webb, 1959
- Globivenus Coen, 1934
- Glossocardia Stoliczka, 1870
- Glossodoris Ehrenberg, 1831
- Glycymeris E. M. da Costa, 1778
- Glyphostoma Gabb, 1872
- Glyphostomops Bartsch, 1934
- Glyphoturris Woodring, 1928
- Glyphyalinia von Martens, 1892
- Glyptaesopus Pilsbry and Olsson, 1941
- Glyptostoma Bland and W. G. Binney, 1873
- Godiva Macnae, 1954
- Gonatopsis Sasaki, 1920
- Gonatoraphe Moellendorff, 1898
- Gonatus Gray, 1849
- Goniaeolis M. Sars, 1861
- Gonidea Conrad, 1857
- Goniodoris Forbes and Goodsir, 1939
- Goodallia Turton, 1822
- Gorgoleptis Mclean, 1988
- Gouldia C. B. Adams, 1847
- Granata Cotton, 1957
- Grandidieria Bourguignat, 1885
- Graneledone Joubin, 1918
- Granotoma Bartsch, 1941
- Granoturris Fargo, 1953
- Granula Jousseaume, 1875
- Granulina Jousseaume, 1888
- Graphis Jeffreys, 1867
- Graptacme Pilsbry & Sharp, 1897
- Gregariella di Monterosato, 1884
- Greilada
- Grimalditeuthis Joubin, 1898
- Grimpella Robson, 1928
- Grimpoteuthis Robson, 1932
- Grippina Dall, 1912
- Guildfordia Gray, 1850
- Gundlachia Pfeiffer, 1849
- Guppya Morch, 1867
- Guttula Schepman, 1908
- Gymnobela A. E. Verrill, 1884
- Gymnomenia Odhner, 1919
- Gymnotoplax Pilsbry, 1896
- Gyraulus Agassiz, 1837
- Gyrodes Conrad, 1860
- Gyrotoma Shuttleworth, 1845
- Haasica Strand, 1932
- Haasodonta McMichael, 1956
- Habevolutopsius Kantor, 1983
- Hadroconus Quinn, 1987
- Haedropleura Bucquoy, Dautzen., Dollfus, 1883
- Hainesia Pfeiffer, 1856
- Halgerda Bergh, 1880
- Halicardia Dall, 1895
- Haliella
- Haliotinella Souverbie, 1875
- Haliotis Linnaeus, 1758
- Haliphron Steenstrup, 1859
- Haliris Dall, 1886
- Halistrepta Dall, 1904
- Halistylus Dall, 1890
- Hallaxa Eliot, 1909
- Haloceras Dall, 1889
- Haloconcha Dall, 1886
- Halodakra Olsson, 1961
- Halomenia Heath, 1911
- Haminoea Turton and Kingston, 1830
- Hamiota Roe & Hartfield, 2005
- Hancockia Gosse, 1877
- Hanleya Gray, 1857
- Hanleyella Sirenko, 1973
- Hapalochlaena Robson, 1929
- Haplocochlias Carpenter, 1864
- Haplotrema Ancey, 1881
- Hargravesia H. Adams, 1870
- Harmandia Rochebrune, 1882
- Harpagoherpia Salvini-Plawen, 1978
- Hastula H. Adams and A. Adams, 1853
- Haumea Dall, Bartsch, and Rehder, 1938
- Haustellum Schumacher, 1817
- Hawaiia Gude, 1911
- Heathia Thiele, 1913
- Heathimenia Salvini-Plawen, 1967
- Hebetancylus Pilsbry, 1914
- Hedleya Cox, 1892
- Hedylopsis Thiele, 1931
- Heilprinia Grabau, 1904
- Helcion Dentfort, 1810
- Heleobia Stimpson, 1865
- Heleobops F. G. Thompson, 1968
- Heliacus D'Orbigny, 1842
- Helicella Férussac, 1821
- Helicina Lamarck, 1799
- Helicocranchia Massy, 1907
- Helicodiscus E. S. Morse, 1864
- Helicomorpha Moellendroff, 1890
- Helisoma Swainson, 1840
- Helix Linnaeus, 1758
- Helminthoglypta Ancey, 1887
- Helminthope Salvini-Plawen, 1991
- Hemiarthrum Carpenter in Dall, 1876
- Hemimenia Nierstrasz, 1902
- Hemipoma Wagner, 1905
- Hemistena Rafinesque, 1820
- Hemitoma Swainson, 1840
- Hemitrochus Swainson, 1840
- Hemphillia Bland and W. G. Binney, 1872
- Hendersonia A. J. Wagner, 1905
- Hendersoniella Dall, 1905
- Henrya Bartsch, 1927
- Here Gabb, 1866
- Hermaea Lovén, 1844
- Hermaeopsis Da Costa, 1869
- Hermissenda Bergh, 1879
- Hero
- Herpeteros Berry, 1947
- Herviera
- Hesperarion Simroth, 1891
- Hespererato Schilder, 1932
- Heteranomia
- Heterodonax Morch, 1853
- Heterodoris Verrill and Emerton, 1882
- Heteroherpia Salvini-Plawen, 1978
- Heteroschismoides Ludbrook, 1960
- Heteroteuthis Gray, 1849
- Heudeia Crosse, 1885
- Hexabranchus
- Hexaplex Perry, 1811
- Hiatella Bosc, 1801
- Hindsiclava Hertlein and Strong, 1955
- Hinea Gray, 1847
- Hinemoa
- Hinnites De France, 1821
- Hipponix DeFrance, 1819
- Histioteuthis D'Orbigny, 1842 in Férussac and D'Orbigny, 1834-1848
- Hochbergellus Roth and W. B. Miller, 1992
- Hojeda H. B. Baker, 1926
- Holospira Martens, 1860
- Holsingeria Hershler, 1989
- Homalopoma Carpenter, 1864
- Hopkinsia MacFarland, 1905
- Horologica Laseron, 1956
- Houbricka Wise, 1996
- Hoyia F. C. Baker, 1926
- Humboldtiana Ihering, 1892
- Humilaria Grant and Gale, 1931
- Hungerfordia Beddome, 1889
- Huttonella L. Pfeiffer, 1856
- Huxleyia A. Adams, 1860
- Hyalina Schumacher, 1817
- Hyalocylis de Folin, 1875
- Hyalopecten Verrill, 1897
- Hyaloteuthis Gray, 1849
- Hybochelus Pilsbry, 1899
- Hydatina Schumacher, 1817
- Hydrobia Hartmann, 1821
- Hydrocena Preiffer, 1841
- Hydromyles Gistel, 1848
- Hypermastus Pilsbry, 1899
- Hypomenia Van Lummel, 1930
- Hypselodoris Stimpson, 1855
- Hyridella Swainson, 1840
- Hyriopsis Conrad, 1853
- Ichthyomenia Pilsbry, 1898
- Idaholanx Clark, Campbell and Lydeard, 2017
- Idasola Iredale, 1939
- Idioctopus Taki, 1962
- Idiopoma Pilsbry, 1901
- Idiosepius Steenstrup, 1881
- Idioteuthis Sasaki, 1916
- Iheringella Pilsbry, 1893
- Ilaira H. and A. Adams, 1854
- Ilanga Herbert, 1987
- Illex Steenstrup, 1880
- Imeroherpia Salvini-Plawen, 1978
- Incisura Hedley, 1904
- Indochinella Bolotov, Pfeiffer, Vikhrev, & Konopleva in Bolotov et al., 2018
- Indonaia Prashad, 1918
- Indopseudodon Prashad, 1922
- Inflectarius Pilsbry, 1940
- Iniforis Jousseaume, 1884
- Inioteuthis Verrill, 1881 in 1880-1881
- Inodrillia Bartsch, 1943
- Inversidens Haas, 1911
- Inversiunio Habe, 1991
- Io Lea, 1831
- Iothia Forbes, 1849
- Iphigenia Schumacher, 1817
- Iphitus Jeffreys, 1883
- Ipnobius Hershler, 2001
- Iredalea
- Irenosyrinx Dall, 1908
- Iridoteuthis Naef, 1912
- Irus Schmidt, 1818
- Irusella Hertlein and Grant, 1972
- Isanda H. and A. Adams, 1854
- Ischadium Jukes-Browne, 1905
- Ischnochiton Gray, 1847
- Ischnoplax Dall, 1879
- Iselica Dall, 1918
- Isognomon Lightfoot, 1786
- Isomonia Dautzenberg and Fischer, 1896
- Isorobitella Keen, 1962
- Isselia
- Ithycythara Woodring, 1928
- Ividella Dall and Bartsch, 1909
- Ividia Dall and Bartsch, 1904
- Janolus Bergh, 1884
- Janthina Röding, 1798
- Japelion Dall, 1916
- Japetella Hoyle, 1885
- Japonactaeon I. Taki, 1956
- Japonia Gould, 1859
- Jaspidella Olsson, 1956
- Jorunna Bergh, 1876
- Jouannetia Desmoulins, 1828
- Joubiniteuthis Berry, 1920
- Juga H. Adams and A. Adams, 1854
- Jujubinus Monterosato, 1884
- Juliacorbula Olsson and Harbison, 1953
- Juturnia Hershler, Liu and Stockwell, 2002
- Juvenichiton Sirenko, 1975
- Kaiparapelta B. A. Marshall, 1986
- Kaloplocamus Bergh, 1892
- Katharina Gray, 1847
- Kelletia P. Fischer, 1884
- Kellia Turton, 1822
- Kelliella M. Sars, 1870
- Kermia
- Khairuloconcha Zieritz, Lopes-Lima & Pfeiffer in Zieritz et al., 2021
- Kleinella A. Adams, 1860
- Koloonella
- Kondakovia Filippova, 1972
- Koreosolenaia Lee, Kim, Lopes-Lima & Bogan in Lopes-Lima et al., 2020
- Kryptos Jeffreys, 1896
- Kurilabyssia Moskalev, 1976
- Kurtzia Bartsch, 1944
- Kurtziella Dall, 1918
- Kurtzina Bartsch, 1944
- Kylix Dall, 1919
- Labidoherpia Salvini-Plawen, 1978
- Lacteoluna Pilsbry, 1926
- Lacuna Turton, 1827
- Laemodonta Philippi, 1846
- Laevapex Walker, 1903
- Laevicardium Swainson, 1840
- Laevicaulis Simroth, 1913
- Laevichlamys Waller, 1993
- Laevicordia Sequenza, 1876
- Laevidentalium Cossmann, 1888
- Laeviemarginula Habe In Kuroda, 1953
- Laevinesta Pilsbry and McGinty, 1952
- Laevipilina McLean, 1979
- Laila MacFarland, 1905
- Lamellaria Montagu, 1815
- Lamellaxis Strebel and Pfeffer, 1882
- Lamellidens Simpson, 1900
- Lamellidoris Adler and Hancock, 1855
- Lamellitrochus Quinn, 1991
- Lametila
- Lampadioteuthis Berry, 1916
- Lampeia MacGinitie, 1959
- Lamproscapha Swainson, 1840
- Lamprotula Simpson, 1900
- Lampsilis Rafinesque, 1820
- Lanceolaria Conrad, 1853
- Lanistes Montfort, 1810
- Lanx Clessin, 1882
- Laotia Saurin, 1953
- Lapidaria Kang, 1986
- Lapinura Er. Marcus and Ev. Marcus, 1970
- Lasaea T. Brown, 1827
- Lasmigona Rafinesque, 1831
- Latiaxis Swainson, 1840
- Latirus Montfort, 1810
- Laurentiphysa Taylor, 2003
- Leachia Lesueur, 1821
- Learchis Bergh, 1896
- Leaunio Watters, 2018
- Ledella A. E. Verrill and Bush, 1897
- Leguminaia Conrad, 1865
- Lehmannia Heynemann, 1863
- Leidyula H. B. Baker, 1925
- Leila Gray, 1840
- Leiomya A. Adams, 1864
- Lemiox Rafinesque, 1831
- Lens Simpson, 1900
- Leoparreysia Vikhrev, Bolotov & Aksenova in Bolotov et al., 2017
- Lepeta J. E. Gray, 1842
- Lepetella Verrill, 1880
- Lepetodrilus Mclean, 1988
- Lepidochitona Gray, 1821
- Lepidodesma Simpson, 1896
- Lepidomenia Kowalevsky, 1883
- Lepidopleurus Risso, 1826
- Lepidoteuthis Joubin, 1895
- Lepidozona Pilsbry, 1892
- Leporimetis Iredale, 1930
- Leptadrillia Woodring, 1928
- Leptaxinus A. E. Verrill and Bush, 1898
- Leptochiton Gray, 1847
- Leptocollonia Powell, 1951
- Leptogyra Bush, 1897
- Lepton Turton, 1822
- Leptopecten A. E. Verrill, 1897
- Leptopoma Pfeiffer, 1847
- Leptothyra Pease, 1869
- Leptoxis Rafinesque, 1819
- Lepyrium Pilsbry and Olsson, 1951
- Leuconopsis Hutton, 1884
- Leucophytia
- Leucorhynchia Crosse, 1867
- Leucosyrinx Dall, 1889
- Leucozonia Gray, 1847
- Leurolepas J. H. McLean, 1970
- Liaria Gray, 1852
- Lienardia
- Ligumia Swainson, 1840
- Liguriella Issel, 1908
- Liguus Montfort, 1810
- Lima Bruguiere, 1789
- Limacia
- Limacina Bosc, 1817
- Limalepta Moskalev, 1978
- Limapontia Johnston, 1836
- Limaria Link, 1807
- Limatula S. V. Wood, 1839
- Limax Linnaeus, 1758
- Limea Bronn, 1831
- Limifossor Heath, 1904
- Limnoscapha Lindholm, 1932
- Limopsis Sasso, 1827
- Linatella Gray, 1857
- Lindapecten Petuch, 1995
- Linga De Gregorio, 1884
- Linidiella Jousseaume, 1889
- Linisa Pilsbry, 1930
- Lioberus Dall, 1898
- Liocranchia Pfeffer, 1884
- Liocyma Dall, 1870
- Liolophura Pilsbry, 1893
- Liomesus Stimpson, 1865
- Lioplax Troschel, 1857
- Liostomia G. O. Sars, 1878
- Liotia G. B. Sowerby I, 1834
- Liotina Fischer, 1885
- Lirabuccinum Vermeij, 1991
- Liracyclotus Bartsch, 1942
- Lirobarleeia Ponder, 1983
- Lirobittium Bartsch, 1911
- Lirophora Conrad, 1883
- Lirularia Dall, 1909
- Lischkeia Fischer, 1879
- Lissodrillia Bartsch and Rehder, 1939
- Lissotesta Iredale, 1915
- Lissotestella Powell, 1948
- Lithasia Haldeman, 1840
- Lithoglyphus Pfeiffer, 1828
- Lithophaga Roding, 1798
- Lithopoma Gray, 1850
- Litiopa Rang, 1829
- Littoraria Griffith and Pidgeon, 1834
- Littoridina Eydoux and Souleyet, 1852
- Littoridinops Pilsbry, 1952
- Littorina Ferussac, 1822
- Lituiherpia Salvini-Plawen, 1978
- Lobiger Krohn, 1847
- Lobosculum Pilsbry, 1930
- Loligo Lamarck, 1798
- Loliolus Steenstrup, 1856
- Lolliguncula Steenstrup, 1881
- Lomanotus Verany, 1844
- Lopha Roding, 1798
- Lophocochlias Pilsbry, 1921
- Lophodoris G. O. Sars, 1878
- Lophomenia Heath, 1911
- Lora
- Lorica H. Adams and A. Adams, 1852
- Loricella Pilsbry, 1893
- Loripes Poli, 1791
- Lortiella Iredale, 1934
- Lottia G. B. Sowerby I, 1834
- Lucapina G. B. Sowerby II, 1835
- Lucapinella Pilsbry, 1890
- Lucidella Swainson, 1840
- Lucina Lamarck, 1799
- Lucinella Monterosato, 1883
- Lucinisca Dall, 1901
- Lucinoma Dall, 1901
- Luizia Douvillé, 1933
- Lunatia Gray, 1847
- Lusitanops F. Nordsieck, 1968
- Lussivolutopsius Kantor, 1983
- Lutraria Lamarck, 1799
- Luzonia Dall and E. A. Smith, 1890
- Lycoteuthis Pfeffer, 1900
- Lymnaea Lamarck, 1799
- Lyogyrus Gill, 1863
- Lyonsia Turton, 1822
- Lyonsiella M. Sars, 1782
- Lyratoherpia Salvini-Plawen, 1978
- Lyrodus Binney, 1870
- Lyropecten Conrad, 1862
- Macellomenia Simroth, 1893
- Macoma Leach, 1819
- Macrarene Hertlein and Strong, 1951
- Macrocallista Meek, 1876
- Macrochisma Sowerby, 1839
- Macrocypraea Schilder, 1930
- Macromphalina Cossman, 1888
- Macron H. Adams and A. Adams, 1853
- Mactra Linnaeus, 1767
- Mactrellona
- Mactromeris Conrad, 1868
- Mactrotoma Dall, 1894
- Madrella Alder and Hancock, 1864
- Magadis Melville and Standen, 1899
- Magnipelta Pilsbry, 1953
- Maizania Bourguignat, 1889
- Maizaniella Bequaert and Clench, 1836
- Malanochlamys
- Malletia Desmoulins, 1832
- Malleus Lamarck, 1799
- Malluvium Melvill, 1909
- Mancikellia Dall, 1899
- Mangelia Risso, 1826
- Manzonia Brusina, 1870
- Mareleptopoma Moolenbeek and Faber, 1984
- Margarites J. E. Gray, 1847
- Margaritifera Schumacher, 1816
- Margarya Neville, 1877
- Marginella Lamarck, 1799
- Maricopella Roth, 1996
- Marinula P. P. King, 1832
- Marionia Vayssiere, 1877
- Marisa Gray, 1824
- Marsenina Gray, 1850
- Marseniopsis Bergh, 1886
- Marshallora Bouchet, 1985
- Marstonia Baker, 1926
- Martensnaias Frierson, 1927
- Martesia G. B. Sowerby I, 1824
- Martialia Rochebrune and Mabille, 1889
- Massya Pruvot-Fol, 1924
- Mastigoteuthis Verrill, 1881
- Mathilda Semper, 1865
- Maxwellia Bailey, 1950
- Mazatlania Dall, 1913
- Medionidus Simpson, 1900
- Medusafissurella Mclean and Kilburn, 1986
- Megacrenella Habe and Ito, 1965
- Megaentalina Habe, 1963
- Megaleledone Taki, 1961
- Megalocranchia Pfeffer, 1884
- Megalomastoma Swainson, 1840
- Megalomphalus Brusina, 1871
- Megalonaias Utterback, 1915
- Megapallifera Fairbanks, 1990
- Megastraea J. H. McLean, 1970
- Megasurcula Casey, 1904
- Megatebennus Pilsbry, 1890
- Megathura Pilsbry, 1890
- Megayoldia A. E. Verrill and Bush, 1897
- Megomphix H. B. Baker, 1930
- Meiocardia H. and A. Adams, 1857
- Meioherpia Salvini-Plawen, 1985
- Meiomenia M. P. Morse, 1979
- Mekongia Crosse and Fischer, 1876
- Melampus Montfort, 1810
- Melanella Bowdich, 1822
- Melaniella L. Pfeiffer, 1857
- Melanochlamys Cheesman, 1881
- Melanoides Olivier, 1804
- Melibe Rang, 1829
- Melongena Schumacher, 1817
- Meloscaphander
- Mendicula Iredale, 1924
- Menestho Moller, 1842
- Menetus H. Adams and A. Adams, 1855
- Mercenaria Schumacher, 1817
- Merelina
- Meromenia Leloup, 1949
- Mesodesma Deshayes, 1832
- Mesodon Rafinesque, 1821
- Mesomphix Rafinesque, 1819
- Mesonychoteuthis Robson, 1925
- Mesopelex Marshall, 1986
- Metachaetoderma Thiele, 1913
- Metamenia Thiele, 1913
- Metasepia Hoyle, 1885
- Metastoma Strebel and Pfeffer, 1880
- Metaxia di Monterosato, 1884
- Metula H. Adams and A. Adams, 1853
- Metzgeria Norman, 1879
- Mexcyclotus Bartsch, 1942
- Mexichromis Bertsch, 1977
- Micranellum
- Micrarionta Ancey, 1880
- Micraulax Theobald, 1876
- Microceramus Pilsbry and Vanatta, 1898
- Microcondylaea von Vest, 1866
- Microdontia Tapparone Canefri, 1883
- Microdrillia Casey, 1903
- Microeulima Waren, 1992
- Microgaza Dall, 1881
- Microgloma Saunders and Allen, 1973
- Microglyphis Dall, 1902
- Microhedyle Hertling, 1930
- Micromelo Pilsbry, 1895
- Micromenetus F. C. Baker, 1945
- Micromenia Leloup, 1948
- Micronaias Simpson, 1900
- Microphysula Cockerell, 1926
- Microstelma A. Adams, 1863
- Microtralia Dall, 1894
- Microvoluta Angas, 1877
- Middendorffinaia Moskvicheva & Starobogatov, 1973
- Miesea Er. Marcus, 1961
- Mikadotrochus Lindholm, 1927
- Milax Gray, 1855
- Milda Dall and Bartsch, 1904
- Millerelix Pratt, 1981
- Milneria Dall, 1881
- Minolia A. Adams, 1860
- Miodontiscus Dall, 1903
- Mirachelus Woodring, 1928
- Miraclathurella Woodring, 1928
- Miralda A. Adams, 1864
- Mitra Roding, 1798
- Mitrella Risso, 1826
- Mitrolumna Bucquoy, Dautzenberg and Dollfus, 1883
- Mitromorpha Carpenter, 1865
- Modellnaia Brandt, 1974
- Modiolula Sacco, 1898
- Modiolus Lamarck, 1799
- Modulus Gray, 1842
- Moelleria Jeffreys, 1865
- Moelleriopsis Bush, 1897
- Mohavelix Berry, 1943
- Mohnia Friele, 1879
- Monacha Fitzinger, 1833
- Monadenia Pilsbry, 1895
- Moncetia Bourguignat, 1886
- Monia Gray, 1850
- Monilea Swainson, 1840
- Monocondylaea d'Orbigny, 1835
- Monodonta Lamarck, 1799
- Monostiolum Dall, 1904
- Montacuta Turton, 1822
- Montfortula Iredale, 1915
- Montfortulana Habe, 1961
- Mopalia Gray, 1847
- Moroteuthis Verrill, 1881
- Morrisonella Bartsch, 1945
- Morula Schumacher, 1817
- Morum Roding, 1798
- Moulinsia Grateloup, 1840
- Mourgona Er. Marcus and Ev. Marcus, 1970
- Mucronalia A. Adams, 1860
- Mulinia Gray, 1837
- Munditia Finlay, 1926
- Murchisonella Morch, 1875
- Murex Linnaeus, 1758
- Murexiella Clench and Perez Farfante, 1945
- Murexsul Iredale, 1915
- Muricantharus Hertlein and Strong, 1971
- Muricopsis Bucquoy, Dautzenberg and Dollfus, 1882
- Musculista Yamamoto and Habe, 1958
- Musculium Link, 1807
- Musculus Roding, 1798
- Mutela Scopoli, 1777
- Mya Linnaeus, 1758
- Mycetopoda d'Orbigny, 1835
- Mycetopodella Marshall, 1927
- Mychopoma Blanford, 1869
- Myonera Dall, 1886
- Myosotella di Monterosato, 1906
- Myotophallus Pilsbry, 1939
- Myrtea Turton, 1822
- Mysella Angas, 1877
- Mysia Lamarck, 1818
- Mysouffa Ev. Marcus, 1974
- Mytilimeria Conrad, 1837
- Mytilopsis Conrad, 1857
- Mytilus Linnaeus, 1758
- Myxostoma Troschel, 1847
- Naesiotus Albers, 1850
- Namkongnaia Jeratthitikul, Sutcharit, Ngor & Prasankok, 2021
- Nannodiella Dall, 1919
- Nannoteretispira Habe, 1961
- Nanobalcis Waren and Mifsud, 1990
- Nanula Thiele, 1924
- Nassaria Link, 1807
- Nassarina Dall, 1889
- Nassarius Dumeril, 1806
- Natica Scoploi, 1777
- Naticarius Duméril, 1806
- Naudolivia Kilburn, 1989
- Nausitora Wright, 1884
- Nautilus Linnaeus, 1758
- Navanax Pilsbry, 1895
- Neadmete Habe, 1961
- Neaeromya Gabe, 1873
- Nearctula Sterki, 1892
- Nectoteuthis Verrill, 1883
- Neilonela Dall, 1881
- Nematolampas Berry, 1913
- Nematomenia Simroth, 1893
- Nembrotha Bergh, 1877
- Nemocardium Meek, 1876
- Neoberingius Habe and Ito, 1965
- Neocyclotus Fischer and Crosse, 1886
- Neodrillia Bartsch, 1943
- Neohelix Ihering, 1892
- Neolepton Finley, 1926
- Neomaizania Van Bruggen, 1985
- Neomenia Tullberg, 1875
- Neopilina Lemche, 1957
- Neoplanorbis Pilsbry, 1906
- Neopleurotomoides Shuto, 1925
- Neopycnodonte Stenzel, 1971
- Neorossia Boletzky, 1971
- Neosimnia P. Fischer, 1884
- Neoteuthis Naef, 1921
- Neothauma E. Smith, 1880
- Neotrapezium Habe, 1951
- Nephritica Frierson, 1927
- Nephronaias Crosse & Fischer, 1894
- Nepotilla Hedley, 1918
- Neptunea Röding, 1798
- Nerita Linnaeus, 1758
- Neritilia Van Martens, 1879
- Neritina Lamarck, 1816
- Neritodryas Von Martens, 1869
- Neritopsis Grateloup, 1832
- Nesovitrea C. M. Cooke, 1921
- Nesta H. Adams, 1870
- Netastoma Carpenter, 1864
- Nettastomella Carpenter, 1865
- Neverita Risso, 1826
- Newnesia E. A. Smith, 1902
- Nierstrassia
- Nipponolimopsis Habe, 1951
- Nipponotrophon
- Niso Risso, 1826
- Nitia Pallary, 1924
- Nitidella Swainson, 1840
- Nitidiscala de Boury, 1909
- Niveotectura Habe, 1944
- Niveria Jousseaume, 1884
- Nodilittorina von Martens, 1897
- Nodipecten Dall, 1898
- Nodiscala de Boury, 1889
- Nodopomatias Gude, 1921
- Nodotoma
- Nodularia Conrad, 1853
- Nodulotrophon
- Noetia Gray, 1857
- Norrisia Bayle, 1880
- Notarchus Cuvier, 1818
- Notoacmea Iredale, 1915
- Notobranchaea Pelseneer, 1886
- Notobryon Odhner, 1936
- Notocrater Finley, 1927
- Notogillia Pilsbry, 1953
- Notomella Cotton, 1957
- Notomenia Thiele, 1897
- Notoplax H. Adams, 1861
- Nototeredo Bartsch, 1923
- Nototeuthis Nesis and Nikitina, 1986
- Nototodarus Pfeffer, 1912
- Noumeaella Gosliner, 1991
- Novisuccinea Pilsbry, 1948
- Noyo Roth, 1996
- Nucella Roding, 1798
- Nucinella Wood, 1851
- Nucula Lamarck, 1799
- Nuculana Link, 1807
- Nuculoma Cossmann, 1907
- Nutricola Bernard, 1982
- Nuttallia Dall, 1900
- Nuttallina Dall, 1871
- Nuttallochiton Plate, 1899
- Nyassunio Haas, 1936
- Nyeinchanconcha Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Nystiella Clench and Turner, 1952
- Obesotoma Bartsch, 1941
- Obliquaria Rafinesque, 1820
- Obovalis Simpson, 1900
- Obovaria Rafinesque, 1819
- Oceanida de Folin, 1870
- Ocenebra Gray, 1847
- Ocenotrophon McLean, 1995
- Ocheyoherpia Salvini-Plawen, 1978
- Ocinebrina Jousseaume, 1880
- Octopoteuthis Rüppell, 1844
- Octopus Cuvier, 1797
- Ocythoe Rafinesque, 1814
- Odontogena Cowan, 1964
- Odostomella Bucquoy, Dautzenberg and Dollfus, 1883
- Odostomia Fleming, 1813
- Oenopota Morch, 1852
- Ogaridiscus Chamberlin and Jonas, 1929
- Ogasawarana Wagner, 1905
- Okenia Leuckart and Bronn in Menke, 1830
- Oldroydia Dall, 1894
- Olea Agersborg, 1923
- Oligomeria Galkin and Golikov, 1985
- Oligyra Say, 1818
- Oliva Bruguiere, 1789
- Olivella Swainson, 1831
- Olivia Cantraine, 1835
- Olygyra Say, 1818
- Omalogyra Jeffreys, 1859
- Ommastrephes D'Orbigny, 1834 in 1834-1847
- Omniglypta Kuroda & Habe in Habe, 1953
- Onchidella Gray, 1850
- Onchidiopsis Bergh, 1853
- Onchidoris de Blainville, 1816
- Onithochiton Gray, 1847
- Onoba H. Adams and A. Adams, 1852
- Onobops F. G. Thompson, 1969
- Onychoteuthis Lichtenstein, 1818
- Onykia Lesueur, 1821
- Oocorys P. Fischer, 1883
- Opalia H. Adams and A. Adams, 1853
- Opaliopsis Thiele, 1928
- Opeas Albers, 1850
- Ophiodermella Bartsch, 1944
- Opisthostoma W. and H. Blanford, 1860
- Opisthoteuthis Verrill, 1883
- Orbitestella Iredale, 1917
- Oreohelix Pilsbry, 1904
- Orinella Dall and Bartsch, 1904
- Ornithoteuthis Okada, 1927
- Orobitella Dall, 1900
- Orobophana Wagner, 1905
- Orthalicus Beck, 1837
- Ortmanniana Frierson, 1927
- Osteopelta Marshall, 1987
- Ostodes Gould, 1862
- Ostrea Linnaeus, 1758
- Otala Schumacher, 1817
- Otina Gray, 1847
- Ovatella Bivona, 1832
- Oxychilus Fitzinger, 1833
- Oxygyrus Benson, 1835
- Oxyloma Westerlund, 1885
- Oxynoe Rafinesque, 1814
- Pachymenia Heath, 1911
- Pachynaias Crosse & Fischer, 1894
- Pachystremiscus Olsson and McGinty, 1942
- Paedoclione Danforth, 1907
- Paetulunio Watters, 2018
- Palaina Semper, 1865
- Palio Gray, 1857
- Palisa Edmunds, 1964
- Pallifera E. S. Morse, 1864
- Palliolum di Monterosato, 1884
- Paludestrina d'Orbigny, 1840
- Panacca Dall, 1905
- Pandora Chemnitz, 1795
- Panocochlea Dall, 1908
- Panomya Gray, 1857
- Panopea Menard, 1807
- Papustyla Pilsbry, 1893
- Papyridea Swainson, 1840
- Parabornia Boss, 1965
- Paraclione Tesch, 1903
- Paracocculina Haszprunar, 1987
- Paradentalium Cotton & Godfrey, 1933
- Paragymmomenia Leloup, 1947
- Parahyotissa Harry, 1985
- Paralaoma Iredale, 1913
- Parallelodon Meek and Worthen, 1866
- Paramya Conrad, 1860
- Parapholas Conrad, 1848
- Pararrhopalia Simroth, 1893
- Parashiela
- Parastarte Conrad, 1862
- Parateuthis Thiele, 1920
- Paravitrea Pilsbry, 1898
- Pareledone Robson, 1932
- Parreysia Conrad, 1853
- Particulazona Kaas, 1993
- Parvamussium Sacco, 1897
- Parvanachis Radwin, 1968
- Parvasolenaia Huang & Wu in Huang et al., 2019
- Parvaspina Perkins, Johnson & Gangloff, 2017
- Parvicardium Monterosato, 1884
- Parvilucina Dall, 1901
- Parviphos Sarasua, 1984
- Parviturbo Pilsbry and McGinty, 1945
- Parviturboides Pilsbry and McGinty, 1950
- Patella Linnaeus, 1758
- Patelloida Quoy and Gaimard, 1834
- Patera Albers, 1850
- Patina Gray, 1840
- Patinopecten Dall, 1898
- Paziella
- Pazionotus
- Pearsonia Kobelt, 1902
- Pecosorbis Taylor, 1985
- Pecten Muller, 1776
- Pectinella A. E. Verrill, 1897
- Pectinodonta Dall, 1882
- Pedicularia Swainson, 1840
- Pedipes Ferussac, 1821
- Pegias Simpson, 1900
- Pelseneeria Koehler and Vaney, 1908
- Peltodoris Bergh, 1880
- Pelycidion Fischer, 1873
- Penitella Valenciennes, 1846
- Peracle Forbes, 1844
- Periglypta Jukes-Browne, 1914
- Peringia Paladilhe, 1874
- Periploma Schumacher, 1817
- Peristichia Dall, 1889
- Perna Philipsson, 1788
- Perotrochus P. Fischer, 1885
- Persicula Schumacher, 1817
- Pertusiconcha Chistikov, 1982
- Petalifera Gray, 1847
- Petaloconchus I. Lea, 1843
- Petitilla Wise, 1996
- Petricola Lamarck, 1801
- Petricolaria Stoliczka, 1870
- Phalium Link, 1807
- Phaseolus Monterosato, 1875
- Phaxas Leach, 1852
- Phenacovolva Iredale, 1930
- Phidiana Gray, 1850
- Philbertia
- Philine Ascanius, 1772
- Philinoglossa Hertling, 1932
- Philinopsis Pease, 1860
- Philippia J. E. Gray, 1847
- Philobrya Carpenter, 1872
- Philomycus Rafinesque, 1820
- Philorene Oliver, 1915
- Pholadidea Turton, 1819
- Pholas Linnaeus, 1758
- Pholidoherpia Salvini-Plawen, 1978
- Pholidoteuthis Adam, 1950
- Phorculus Cossmann, 1888
- Phos Montfort, 1810
- Photinastoma Powell, 1951
- Photinula H. and A. Adams In Adams, 1853
- Phreatoceras Hershler and Longley, 1987
- Phreatodrobia Hershler and Longley, 1986
- Phyllaplysia P. Fischer, 1872
- Phyllidiopsis Bergh, 1875
- Phylliroe Peron and Lesueur, 1810
- Phyllobranchillus Pruvot-Fol, 1933
- Phyllomenia Thiele, 1913
- Phymorhynchus Dall, 1908
- Physa Draparnaud, 1801
- Physella Haldeman, 1842
- Physunio Simpson, 1900
- Phytia Nomen Nudum
- Pickfordiateuthis Voss, 1953
- Pictodentalium Palmer, 1974
- Pila Röding, 1798
- Piliscus Loven, 1859
- Pillucina Pilsbry, 1921
- Pilsbryna H. B. Baker, 1929
- Pilsbryoconcha Simpson, 1900
- Pilsbryspira Bartsch, 1950
- Pinctada Roding, 1798
- Pinna Linnaeus, 1758
- Pinteria Varga, 1972
- Pisania Bivona-Bernardi, 1832
- Piseinotecus Er. Marcus, 1955
- Pisidium L. Pfeiffer, 1821
- Pisulina G. and H. Nevill, 1869
- Pitar Römer, 1857
- Placida Trinchese, 1876
- Placiphorella Dall, 1879
- Placiphorina Kaas and Van Belle, 1993
- Placopecten Verrill, 1897
- Plagiocardium Cossmann, 1886
- Plagioglypta Pilsbry in Pilsbry & Sharp, 1897
- Planaxis Lamarck, 1822
- Planctoteuthis Pfeffer, 1912
- Planitrochus Perner, 1903
- Planktomya Simroth, 1896
- Planogyra E. S. Morse, 1864
- Planorbella Haldeman, 1842
- Planorbis Müller, 1774
- Planorbula Haldeman, 1842
- Plathymenia Schwabl, 1961
- Platomysia Habe, 1951
- Platycythara Woodring, 1928
- Platydoris Bergh, 1877
- Platyodon Conrad, 1837
- Platyrhaphe Moellendorff, 1890
- Plaxiphora Gray, 1847
- Plectodon Carpenter, 1864
- Plectomerus Conrad, 1853
- Pleiodon Conrad, 1834
- Plesarionta Pilsbry, 1939
- Plesiocystiscus Coovert and Coovert, 1995
- Plesiothyreus Cossmann, 1888
- Plesiotrochus P. Fischer, 1878
- Plethobasus Simpson, 1900
- Pletholophus Simpson, 1900
- Pleurobema Rafinesque, 1819
- Pleurobranchaea Meckel, 1813
- Pleurobranchus Cuvier, 1804
- Pleurocera Rafinesque, 1818
- Pleuromalaxis Pilsbry and McGinty, 1945
- Pleuromeris Conrad, 1867
- Pleuronaia Frierson, 1927
- Pleuroploca P. Fischer, 1884
- Pleuropoma Moellendorff, 1893
- Pleurotomella Verrill, 1872
- Plicatula Lamarck, 1801
- Plicifusus Dall, 1902
- Plicopurpura Cossmann, 1903
- Pneumoderma Dumeril, 1806
- Pneumodermopsis Keferstein, 1862
- Pododesmus Philippi, 1837
- Poirieria Jousseaume, 1880
- Policordia Dall, Bartsch and Rehder, 1938
- Polinices Montfort, 1810
- Pollia J. E. Gray, 1834
- Pollicaria Gould, 1856
- Polybranchia Pease, 1860
- Polycera Cuvier, 1817
- Polycerella A. E. Verrill, 1881
- Polygireulima Sacco, 1892
- Polygyra Say, 1818
- Polygyrella W. G. Binney, 1863
- Polygyriscus Pilsbry, 1948
- Polygyroidea Pilsbry, 1930
- Polymesoda Rafinesque, 1820
- Polyschides Pilsbry & Sharp, 1898
- Polystira Woodring, 1928
- Pomacea Perry, 1810
- Pomatiopsis Tryon, 1862
- Pomaulax Gray, 1850
- Pondorbis Bartsch, 1915
- Popenaias Frierson, 1927
- Porocallia Moellendorff, 1893
- Poromya Forbes, 1844
- Portlandia Morch, 1857
- Potamacmaea Peile, 1922
- Potamilus Rafinesque, 1818
- Potamocorbula Habe, 1955
- Potamopyrgus Stimpson, 1865
- Poteria Gray, 1850
- Potomida Swainson, 1840
- Powellsetia
- Praticolella von Martens, 1892
- Precuthona Odhner, 1929
- Pressidens Haas, 1910
- Pressodonta Simpson, 1900
- Primovula Thiele, 1925
- Prionoglossa Tesch, 1950
- Prisodon Schumacher, 1817
- Prisodontopsis Tomlin, 1928
- Prisogaster Moerch, 1850
- Pristes Carpenter, 1864
- Pristigloma Dall, 1900
- Pristiloma Ancey, 1887
- Pristinicola Hershler, Frest, Johannes, Bowler and F. G. Thompson, 1994
- Problacmaea Golikov and Kussakin, 1972
- Probythinella Thiele, 1928
- Prochaetoderma Thiele, 1913
- Proctonotus Alder, 1844
- Prohyriopsis Haas, 1914
- Prolasmidonta Ortmann, 1914
- Promachoteuthis Hoyle, 1885
- Promenetus F. C. Baker, 1935
- Proneomenia Hubrecht, 1880
- Pronodularia Starobogatov, 1970
- Proparamenia Nierstrasz, 1902
- Propeamussium Gregorio, 1884
- Propebela Iredale, 1918
- Prophysaon Bland and W. G. Binney, 1873
- Propilidium Forbes and Hanley, 1849
- Propustularia Schilder, 1927
- Proserpina G. B. Sowerby, 1839
- Proserpinella Bland, 1865
- Protatlanta Tesch, 1908
- Proterato Schilder, 1927
- Protocuspidaria Allen and Morgan, 1981
- Protothaca Dall, 1902
- Protunio Haas, 1913
- Prunum Herrmannsen, 1852
- Pruvotella Pruvot-fol, 1932
- Pruvotia Thiele, 1894
- Pruvotina Cockerell, 1903
- Psammodoris Martynov, 1994
- Psammotreta Dall, 1900
- Pseudacteon Thiele, 1925
- Pseudanodonta Bourguignat, 1876
- Pseudobaphia Simpson, 1900
- Pseudochama Odhner, 1917
- Pseudococulina Schepman, 1908
- Pseudocuneopsis Huang, Dai, Chen & Wu et al., 2022
- Pseudocyphoma Cate, 1973
- Pseudodiala Ponder, 1967
- Pseudodon Gould, 1844
- Pseudodontoideus Frierson, 1927
- Pseudodontopsis Kobelt, 1912
- Pseudoliomesus Habe and Sato, 1973
- Pseudolivia Swainson, 1840
- Pseudomalaxis P. Fischer, 1885
- Pseudomelatoma Dall, 1918
- Pseudomiltha
- Pseudomulleria R. Anthony, 1907
- Pseudopalaina Moekkendroff, 1898
- Pseudopomatias Moellendorff, 1885
- Pseudopythina P. Fischer, 1884
- Pseudosabinella McLean, 1995
- Pseudoscilla Boettger, 1901
- Pseudosimnia Schilder, 1927
- Pseudospatha Simpson, 1900
- Pseudostomatella Thiele, 1924
- Pseudosubulina Strebel and Pfeffer, 1882
- Pseudosuccinea F. C. Baker, 1908
- Pseudotalopia Habe, 1961
- Pseudotaranis McLean, 1995
- Pseudotorinia Sacco, 1892
- Pseudotrochatella Nevill, 1891
- Pseudotryonia Hershler, 2001
- Pseudovermis Periaslavzeff, 1891
- Pseudunio Haas, 1910
- Psilaxis Woodring, 1928
- Psilodens Salvini-Plawen, 1977
- Psiloteredo Bartsch, 1922
- Psoronaias Crosse & Fischer, 1894
- Psychroteuthis Thiele, 1920
- Pterarene Sakurai and Habe, 1977
- Pteria Scoploi, 1777
- Pterochelus
- Pteroctopus Fischer, 1882 in 1880-1887
- Pterocyclus Benson, 1832
- Pteromeris Conrad, 1862
- Pteropurpura Jousseaume, 1880
- Pterotrachea Forskal, 1775
- Pterotyphis Jousseaume, 1881
- Pterygioteuthis Fischer, 1896
- Pterynotus Swainson, 1833
- Ptychatractus Stimpson, 1865
- Ptychobranchus Simpson, 1900
- Ptychopoma Moellendorff, 1885
- Ptychorhynchus Simpson, 1900
- Ptychosalpinx Gill, 1867
- Puberella Fischer-Piette and Vukadinovic, 1977
- Pugnus Hedley, 1896
- Pulsellum Stoliczka, 1868
- Pulvinites De France, 1824
- Punctum E. S. Morse, 1864
- Puncturella R. T. Lowe, 1827
- Pupa
- Puperita Gray, 1857
- Pupilaea Gray In Sowerby, 1835
- Pupilla Leach, 1828
- Pupina Vignard, 1829
- Pupinella Gray, 1850
- Pupisoma Stoliczka, 1873
- Pupoides L. Pfeiffer, 1854
- Purpura
- Pusillina
- Pustulosa Frierson, 1927
- Pusula Jousseaume, 1884
- Putilla A. Adams, 1867
- Putzeysia Sulliotti, 1889
- Pycnodonte G. Fischer, 1835
- Pyganodon Crosse & Fischer, 1894
- Pyramidella Lamarck, 1799
- Pyrgocythara Woodring, 1928
- Pyrgodomus Fischer and Crosse, 1893
- Pyrgophorus Ancey, 1888
- Pyrgospira McLean, 1971
- Pyrgulina
- Pyrgulopsis Call and Pilsbry, 1886
- Pyropelta Mclean and Haszprunar, 1987
- Pyroteuthis Hoyle, 1904
- Pyrulofusus Mörch, 1857
- Pyrunculus Pilsbry, 1895
- Pythinella Dall, 1899
- Quadrula Rafinesque, 1820
- Quasicorambe Martynov, 1994
- Quidnipagus (Iredale, 1929)
- Quoyula Iredale, 1912
- Rabdotus Albers, 1850
- Radiatula Simpson, 1900
- Radiocentrum Pilsbry, 1905
- Radiodiscus Pilsbry and Ferriss, 1906
- Radix Montfort, 1810
- Raeta Gray, 1853
- Rangia Desmoulins, 1832
- Raphaulus Pfeiffer, 1856
- Raphitoma Bellardi, 1847
- Recluzia Petit de la Saussaye, 1853
- Rectidens Simpson, 1900
- Reginaia Campbell & Lydeard, 2012
- Reticulatus Frierson, 1927
- Retifusus Dall, 1916
- Retilaskeya Marshall, 1978
- Retimohnia McLean, 1995
- Retusa T. Brown, 1827
- Rhabdoherpia Salvini-Plawen, 1978
- Rhabdus Pilsbry & Sharp, 1897
- Rhamphidonta Bernard, 1975
- Rhapinema F. G. Thompson, 1969
- Rhinodiaphana Lemche, 1967
- Rhiostoma Benson, 1860
- Rhipidoherpia Salvini-Plawen, 1978
- Rhizorus Montford, 1810
- Rhodacmea Walker, 1917
- Rhodinoliotia Tomlin and Shackleford, 1915
- Rhodope
- Rhodopetala Dall, 1921
- Rhodopetoma Bartsch, 1944
- Rhombinella Radwin, 1968
- Rhomboidella Monterosato, 1884
- Rhomboxiphus Chistikov, 1983
- Rhombuniopsis Haas, 1920
- Rhopalomenia Simroth, 1893
- Rictaxis Dall, 1871
- Rimosodaphnella Schnetler and Beyer, 1990
- Rimula DeFrance, 1827
- Ringicula Deshayes, 1838
- Rissoa Freminville, 1814
- Rissoella J. E. Gray, 1847
- Rissoina d'Orbigny, 1841
- Rissopsetia Dell, 1956
- Rivularia Huede, 1890
- Robsonella Adam, 1938
- Rochefortia Velain, 1878
- Rondeletiola Naef, 1921
- Roperia Dall, 1898
- Rossia Owen, 1834
- Rossiteria Brazier, 1895
- Rostanga Bergh, 1879
- Rotellenzia Quinn, 1987
- Rothelix Miller, 1985
- Roxania Leach In Gray, 1847
- Rubellatoma Bartsch and Rehder, 1939
- Rumina Risso, 1826
- Runcina Forbes and Hanley, 1851
- Rupellaria Fleuriau de Bellevue, 1802
- Sabia Reeve, 1842
- Sabinella di Monterosato, 1890
- Saccharoturris Woodring, 1928
- Saccostrea Dollfus and Dautzenberg, 1920
- Sagamicadulus Sakurai & Shimazu, 1963
- Sagamilepeta Okutani, 1987
- Sagittunio Watters, 2018
- Sakuraeolis Baba, 1965
- Samacar Iredale, 1936
- Sandalomenia Thiele, 1913
- Sandalops Chun, 1906
- Sanguinolaria Lamarck, 1799
- Sansonia Jousseaume, 1892
- Sarasinula Grimpe and Hoffmann, 1924
- Sarasomia
- Sassia Bellardi, 1873
- Saturnia Sequenza, 1877
- Saulea Gray, 1867
- Saxicavella P. Fischer, 1878
- Saxidomus Conrad, 1837
- Sayella Dall, 1885
- Scabiellus Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Scabies Haas, 1911
- Scabrina Blanford, 1863
- Scabrotrophon McLean, 1996
- Scaeurgus Troschel, 1857
- Scalenostoma
- Scaliola A. Adams, 1860
- Scaphander Montfort, 1810
- Scaphella Swainson, 1832
- Scelidotoma Choe, Yoon and Habe, 1992
- Schasicheila Shuttleworth, 1852
- Schepmania Haas, 1910
- Schistodesmus Simpson, 1900
- Schistoloma Kobelt, 1902
- Schizobrachium Meisenheimer, 1903
- Schizochiton Gray, 1847
- Schizodentalium Sowerby, 1894
- Schizoplax Dall, 1878
- Schwartziella Ponder, 1985
- Scintillona Finlay, 1926
- Scissilabra Bartsch, 1907
- Scissurella D'Orbigny, 1824
- Sclerodoris Eliot, 1904
- Sconsia Gray, 1847
- Scrobicularia Schumacher, 1815
- Scurria Gray, 1847
- Scutopus Salvini-Plawen, 1968
- Scutus Montfort, 1810
- Scyllaea Linnaeus, 1758
- Searlesia Harmer, 1916
- Securicauda Leonard, Chichester, Richart and Young, 2011
- Seguenzia Jeffreys, 1876
- Seguenziella Marshall, 1983
- Seguenziopsis Marshall, 1983
- Seila A. Adams, 1861
- Selenoteuthis Voss, 1959
- Semele Schumacher, 1817
- Semelina Dall, 1900
- Semierycina Monterosato, 1911
- Seminella
- Semirossia Steenstrup, 1887
- Sepia Linnaeus, 1758
- Sepiadarium Steenstrup, 1881
- Sepiella Gray, 1849
- Sepietta Naef, 1912
- Sepiola Leach, 1817
- Sepiolina Naef, 1912
- Sepioloidea D'Orbigny, 1845 in Férussac and D'Orbigny, 1834-1848
- Sepioteuthis Blainville, 1824
- Septaria J. Férussac, 1807
- Septariellina Bequaert and Clench, 1936
- Septifer Recluz, 1848
- Serpulorbis Sasso, 1827
- Serripes Gould, 1841
- Setia H. and A. Adams, 1852
- Sialoherpia Salvini-Plawen, 1978
- Sigatica Meyer and Aldrich, 1886
- Silicula Jeffreys, 1879
- Siliqua Megerle von Muhlfeld, 1811
- Siliquaria Bruguiere, 1789
- Similiphora Bouchet, 1985
- Simnia Risso, 1826
- Simnialena Cate, 1973
- Simomactra Dall, 1894
- Simpsonaias Frierson, 1914
- Simpsonasus Bolotov & Konopleva in Bolotov et al., 2023
- Simpsonella Cockerell, 1903
- Simrothiella Pilsbry, 1898
- Sinanodonta Modell, 1945
- Sinezona Finlay, 1927
- Sinohyriopsis Starobogatov, 1970
- Sinosolenaia Bolotov, Kondakov, Konopleva & Vikhrev, 2021
- Sinotaia Haas, 1939
- Sinum Röding, 1798
- Siphonaria G. B. Sowerby I, 1823
- Siphonodentalium M. Sars, 1859
- Siraius Marcus, 1955
- Skenea Fleming, 1825
- Skeneopsis Iredale, 1915
- Smaragdia Issel, 1869
- Smeagol Climo, 1980
- Solamen Iredale, 1924
- Solariella S. V. Wood, 1842
- Solariorbis Conrad, 1865
- Solatisonax Iredale, 1931
- Solecurtus de Blainville, 1824
- Solemya Lamarck, 1818
- Solen Linnaeus, 1758
- Solenaia Conrad, 1869
- Solenoxiphus Chistikov, 1983
- Somatogyrus Gill, 1863
- Songkhlanaia Konopleva, Lheknim, Sriwoon, Kondakov, Vikhrev & Bolotov in Konopleva et al., 2023
- Sonorelix Berry, 1943
- Sonorella Pilsbry, 1900
- Spadentalina Habe, 1963
- Spathochlamys Waller, 1993
- Spathoderma Scheltema, 1985
- Spathoteredo Moll, 1928
- Spectamen Iredale, 1924
- Speleodiscoides A. G. Smith, 1957
- Spengelomenia Heath, 1912
- Spengleria Tryon, 1861
- Sphaerium Scopoli, 1777
- Sphenia Turton, 1822
- Sphenonaias Crosse & Fischer, 1894
- Spiculata C. N. Cate, 1973
- Spilochlamys F. G. Thompson, 1968
- Spinobrookula Lozouet, 1982
- Spinula Dall, 1908
- Spiroglyptus Daudin, 1800
- Spirolaxis di Monterosato, 1913
- Spiromoelleria Baxter and J. H. McLean, 1984
- Spirostoma Heude, 1885
- Spirotropis Sars, 1878
- Spirula Lamarck, 1799
- Spisula Gray, 1837
- Splendrillia Hedley, 1922
- Spondylus Linnaeus, 1758
- Spongiobranchaea d'Orbigny, 1836
- Spurilla Bergh, 1864
- Spurwinkia Davis, Mazurkiewicz and Mandracchia, 1982
- Sputoherpia Salvini-Plawen, 1978
- Squamopleura Nierstrasz, 1905
- Srilankaia Mienis, 1974
- Staffola Dall, 1905
- Stagnicola Leach, 1830
- Stauroteuthis Verrill, 1879
- Steironepion Pilsbry and Lowe, 1932
- Stellatoma Bartsch and Rehder, 1939
- Stenochiton H. Adams and Angas, 1864
- Stenolena Dall, Bartsch, and Rehder, 1938
- Stenophysa von Martens, 1898
- Stenoplax Dall, 1879
- Stenosemus von Middendorff, 1847
- Stenotrema Rafinesque, 1819
- Sterkia Pilsbry, 1898
- Sthenorytis Conrad, 1862
- Sthenoteuthis Verrill, 1880 in 1879-1880
- Stigmaulax Mörch, 1852
- Stilifer Broderip, 1832
- Stiliger Ehrenberg, 1828
- Stiobia F. G. Thompson and McCaleb, 1978
- Stoastoma C. B. Adams, 1849
- Stoastomops H. B. Baker, 1924
- Stoloteuthis Verrill, 1881 in 1880-1881
- Stomatella Lamarck, 1816
- Stomatia Helbling, 1779
- Stosicia Brusina, 1871
- Stramonita Schumacher, 1817
- Streptaulus Benson, 1857
- Striarea Conrad, 1862
- Striatura E. S. Morse, 1864
- Strictispira McLean, 1971
- Strigilla Turton, 1822
- Striocadulus Emerson, 1962
- Striodentalium Habe, 1964
- Striopulsellum Scarabino, 1995
- Strobilops Pilsbry, 1893
- Strombiformis Da Costa, 1778
- Stromboli Berry, 1954
- Strombus Linnaeus, 1758
- Strophitus Rafinesque, 1820
- Strophomenia Pruvot, 1899
- Sturanya Wagner, 1905
- Stygopyrgus Hershler and Longley, 1986
- Stylidium Dall, 1907
- Styliferina A. Adams, 1860
- Styliola Gray, 1850
- Stylocheilus Gould, 1852
- Stylomenia Pruvot, 1899
- Suavodrillia Dall, 1918
- Subcancilla Olsson and Harbison, 1953
- Subsimnia C. N. Cate, 1973
- Subterenochiton Iredale & Hull, 1924
- Subulina Beck, 1837
- Succinea Draparnaud, 1801
- Suhinia Martynov, 1994
- Sukashitrochus Habe and Kosuge, 1964
- Sulcosinus Dall, 1895
- Sundadontina Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Supplanaxis Thiele, 1929
- Suturoglypta Radwin, 1968
- Synaptocochlea Pilsbry, 1890
- Syncera Gray, 1821
- Syngenoherpia Salvini-Plawen, 1978
- Tachyrhynchus Morch, 1868
- Tacita Lus, 1971
- Tagelus Gray, 1847
- Taia Annandale, 1918
- Talopena Iredale, 1918
- Talparia Troschel, 1863
- Tambja Burn, 1962
- Tamsiella Haas, 1931
- Taningia Joubin, 1931
- Tanzaniella Lupu, 1979
- Taonius Steenstrup, 1861
- Tapes Muhlfeld, 1811
- Taranis Jeffreys, 1870
- Tarebia H. Adams and A. Adams, 1854
- Taringa Er. Marcus, 1955
- Taylorconcha Hershler, Frest, Johannes, Bowler and F. G. Thompson, 1994
- Tchangsinaia Starobogatov, 1970
- Tectarius Valenciennes, 1833
- Tecticrater Dall, 1956
- Tectininus Clench and Abbott, 1942
- Tectisumen Finley, 1927
- Tectonatica Sacco, 1890
- Tectura Gray, 1847
- Tectus Montfort, 1810
- Tegula Lesson, 1835
- Teinostoma H. Adams and A. Adams, 1853
- Tellidora Morch, 1856
- Tellidorella Berry, 1963
- Tellimya Brown, 1827
- Tellina Linnaeus, 1758
- Tenagodus Guettard, 1770
- Tenaturris Woodring, 1928
- Tenellia A. Costa, 1866
- Tentaoculus Moskalev, 1976
- Teralatirus Coomans, 1965
- Terebra Bruguiere, 1789
- Teredo Linnaeus, 1758
- Teredora Bartsch, 1921
- Teredothyra Bartsch, 1921
- Teretia Norman, 1888
- Teretoctopus Robson, 1929
- Tergipes Cuvier, 1805
- Teskeyostrea Harry, 1985
- Tesseracme Pilsbry & Sharp, 1897
- Testacella Cuvier, 1801
- Tethys Linnaeus, 1758
- Tetracheledone Voss, 1955
- Tetronychoteuthis Pfeffer, 1900
- Teuthirostra Moskalev, 1976
- Teuthowenia Chun, 1910
- Texadina Abbott and Ladd, 1951
- Texapyrgus F. G. Thompson and Hershler, 1991
- Thaiconcha Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Thais Roding, 1798
- Thala H. Adams and A. Adams, 1853
- Thalassopterus Kwietniewski, 1910
- Thaleia Waren, 1979
- Thalotia Gray, 1840
- Thaltia
- Tharsiella Bush, 1897
- Thaumeledone Robson, 1930
- Theba Risso, 1826
- Thecacera Fleming, 1828
- Thelecythara Woodring, 1928
- Theliderma Swainson, 1840
- Thelyssa F. M. Bayer, 1971
- Thelyssina Marshall, 1883
- Theobaldius G. Nevill, 1878
- Theodoxus Montfort, 1810
- Theora H. Adams and A. Adams, 1856
- Thermochiton Saito and Okutani, 1991
- Thesbia Jeffreys, 1867
- Theta Clark, 1959
- Thiara Roeding, 1798
- Thliptodon Boas, 1886
- Tholopex Digeronimo, 1974
- Thomeomaizania Bequeart and Clench, 1936
- Thordisa Bergh, 1877
- Thracia Leach in Blainville, 1824
- Thuridilla Bergh, 1872
- Thyasira Lamarck, 1818
- Thyonicola Mandahl-Barth, 1941
- Thysanophora Strebel and Pfeffer, 1880
- Thysanoteuthis Troschel, 1857
- Tibatrochus Nonura, 1940
- Timoclea Brown, 1827
- Tindaria Bellardi, 1875
- Titiscania Bergh, 1890
- Tivela Link, 1807
- Tochuina Odhner, 1963
- Todarodes Steenstrup, 1880
- Todaropsis Girard, 1890
- Toffelettia Giusti, 1971
- Tomburchus W. H. Harry, 1969
- Tomocyclus Crosse and Fischer, 1872
- Tomura Pilsbry and McGinty, 1946
- Tonicella Carpenter, 1873
- Tonicia Gray, 1847
- Tonicina Thiele, 1906
- Tonna Brunnich, 1772
- Torellia Lovén in Jeffreys, 1867
- Tornatina A. Adams, 1850
- Tornus Turton and Kingston, 1830
- Tortulosa Gray, 1847
- Toxolasma Rafinesque, 1831
- Trabecula di Monterosato, 1884
- Trachycardium Morch, 1853
- Trachypollia Woodring, 1928
- Tralia Gray, 1840
- Transennella Dall, 1883
- Trapania Pruvot-Fol, 1931
- Trapezidens Bolotov, Vikhrev & Konopleva in Bolotov et al., 2017
- Trapezium Muhlfeld, 1811
- Trapezoideus Simpson, 1900
- Tremoctopus Chiaie, 1830 in 1823-1831
- Tresus Gray, 1853
- Trichia Hartmann, 1841
- Trichotropis Broderip and G. B. Sowerby I, 1829
- Tricolia Risso, 1826
- Trigoniocardia Dall, 1900
- Trigonostoma de Blainville, 1825
- Trigonulina D'Orbigny, 1842
- Trilobopsis Pilsbry, 1939
- Trimusculus Schmidt, 1818
- Trinchesia Ihering, 1879
- Triodopsis Rafinesque, 1819
- Triopha Bergh, 1880
- Triphora de Blainville, 1828
- Triplodon Spix & Wagner, 1827
- Triptychus Morch, 1875
- Tritonia Cuvier, 1798
- Tritonidoxa Bergh, 1907
- Tritoniopsis Eliot, 1905
- Tritonoharpa Dall, 1908
- Triumphis Gray, 1857
- Trivia Broderip, 1837
- Trochaclis Thiele, 1912
- Trochinella Iredale, 1937
- Trochoidea Brown, 1827
- Trochotaia Brandt, 1974
- Trochus Linnaeus, 1758
- Trophon Montfort, 1810
- Trophonopsis Bucquoy, Dautzenberg and Dollfus, 1882
- Tropidomarga Powell, 1951
- Truncatella Risso, 1826
- Truncilla Rafinesque, 1819
- Tryonia Stimpson, 1865
- Tubiola A. Adams, 1863
- Tugali Gray In Dieffenbach, 1843
- Tulotoma Haldeman, 1840
- Turbinella Lamarck, 1799
- Turbo Linnaeus, 1758
- Turbonilla Risso, 1826
- Turcica A. Adams, 1854
- Turrisipho Dautzenberg and Fischer, 1912
- Turritella Lamarck, 1799
- Turritellopsis G. O. Sars, 1878
- Turtonia Alder, 1848
- Tylodina Rafinesque, 1814
- Tylodinella
- Typhinellus Jousseaume, 1880
- Typhis Montfort, 1810
- Typhlomangelia G. O. Sars, 1878
- Udosarx Webb, 1954
- Umbilibalcis Bouchet and Waren, 1986
- Umbonium Link, 1807
- Umbraculum Schumacher, 1817
- Uncimenia Nierstraez, 1903
- Unela Er. Marcus, 1953
- Unio Philipsson in Retzius, 1788
- Uniomerus Conrad, 1853
- Unionetta Haas, 1955
- Urosalpinx Stimpson, 1865
- Uroteuthis Rehder, 1945
- Utravoherpia Salvini-plawen, 1979
- Utterbackia F. C. Baker, 1927
- Utterbackiana Frierson, 1927
- Vallonia Risso, 1826
- Valvata O. F. Muller, 1774
- Vampyroteuthis Chun, 1903
- Vanikoro Quoy and Gaimard, 1832
- Varicopeza Grundel, 1976
- Varicorbula Grant and Gale, 1931
- Vasum Roding, 1798
- Velepalaina Iredale, 1937
- Velesunio Iredale, 1934
- Velodona Chun, 1915
- Velutina Fleming, 1820
- Venericardia Lamarck, 1801
- Venerupis Lamarck, 1818
- Ventridens Binney and Bland, 1869
- Venus Linnaeus, 1758
- Venustaconcha Frierson, 1927
- Venustatrochus Powell, 1951
- Veprecula
- Vermetus
- Vermichiton Kaas, 1990
- Vermicularia Lamarck, 1799
- Veronicella de Blainville, 1817
- Verticordia J. de C. Sowerby, 1844
- Vertigo O. F. Müller, 1773
- Vesicomya Dall, 1886
- Vespericola Pilsbry, 1939
- Vexillum Roding, 1798
- Viana H. and A. Adams, 1856
- Vilasina Bartsch, 1960
- Villosa Frierson, 1927
- Virgus Simpson, 1900
- Viridrillia Bartsch, 1943
- Vitrea Fitzinger, 1833
- Vitreledonella Joubin, 1918
- Vitreolina di Monterosato, 1884
- Vitricithra
- Vitricythara Fargo, 1953
- Vitrina Draparnaud, 1801
- Vitrinella C. B. Adams, 1850
- Vitrinizonites W. G. Binney, 1879
- Vitrinorbis Pilsbry and Olsson, 1952
- Viviparus Montfort, 1810
- Voluta Linnaeus, 1758
- Volutharpa P. Fischer, 1856
- Volutomitra H. Adams and A. Adams, 1853
- Volutopsion Habe and Ito, 1965
- Volutopsius Morch, 1857
- Volva Linnaeus, 1758
- Volvarina Hinds, 1844
- Volvatella Newton, 1891
- Volvulella Newton, 1891
- Vorticifex Meek, 1870
- Vosseledone Palacio, 1978
- Waldemaria Wagner, 1905
- Walvisteuthis Nesis and Nikitina, 1986
- Watasenia Ishikawa, 1914
- Webbhelix Emberton, 1988
- Weedingia Kaas, 1988
- Wemersoniella Scarabino, 1986
- Westralunio Iredale, 1934
- Williamia Monterosato, 1884
- Wirenia Odhner, 1921
- Woodbridgea S. S. Berry, 1953
- Xanthodaphne Powell, 1942
- Xenophora Fischer von Waldheim, 1807
- Xerarionta Pilsbry, 1913
- Xolotrema Rafinesque, 1819
- Xylochiton Gowlett-Holmes and Jones, 1992
- Xylophaga Turton, 1822
- Xyloredo Turner, 1972
- Yaquinabyssia Haszprunar, 1988
- Yaukthwa Konopleva, Pfeiffer, Vikhrev, Kondakov, Gofarov, Aksenova, Lunn, Chan & Bolotov, 2019
- Yoldia Moller, 1842
- Yoldiella A. E. Verrill and Bush, 1897
- Zachrysia Pilsbry, 1894
- Zacoleus Pilsbry, 1903
- Zafrona Iredale, 1916
- Zalipais Iredale, 1915
- Zebina H. Adams and A. Adams, 1854
- Zeidora A. Adams, 1860
- Zemira H. Adams and A. Adams, 1853
- Zirfaea Gray, 1842
- Zonaria Jousseaume, 1884
- Zonites Montfort, 1810
- Zonitoides Lehmann, 1862
- Zonulispira Bartsch, 1950
- Zoogenetes E. S. Morse, 1864
Подродови
уреди- Abralia (Abralia) Gray, 1849
- Abralia (Asteroteuthis) Pfeffer, 1908
- Abralia (Astrabralia) Nesis, 1987
- Abralia (Enigmoteuthis) Adam, 1973
- Abralia (Heterabralia) Tsuchiya and Okutani, 1988
- Abralia (Pygmabralia) Nesis, 1987
- Abraliopsis (Abraliopsis) Joubin, 1896
- Abraliopsis (Boreabraliopsis) Tsuchiya and Okutani, 1988
- Abraliopsis (Micrabralia) Pfeffer, 1900
- Abraliopsis (Pfefferiteuthis) Tsuchiya and Okutani, 1988
- Chiroteuthis (Chiroteuthis) D'Orbigny, 1841 In Férussac and D'Orbigny, 1834-1848
- Chiroteuthis (Chirothauma) Chun, 1910
- Enoploteuthis (Enoploteuthis) D'Orbigny in Rüppell, 1844
- Enoploteuthis (Paraenoploteuthis) Tsuchiya and Okutani, 1988
- Filopaludina (Siamopaludina) Brandt, 1968
- Gonatopsis (Boreoteuthis) Nesis, 1971
- Gonatopsis (Gonatopsis) Sasaki, 1920
- Heteroteuthis (Heteroteuthis) Gray, 1849
- Heteroteuthis (Stephanoteuthis) Berry, 1909
- Leachia (Leachia) Lesueur, 1821
- Leachia (Pyrgopsis) Rochebrune, 1884
- Loligo (Alloteuthis) Wülker, 1920
- Loligo (Doryteuthis) Naef, 1912
- Loligo (Loligo) Lamarck, 1798
- Loliolus (Loliolus) Steenstrup, 1856
- Loliolus (Nipponololigo) Natsukari, 1983
- Lolliguncula (Loliolopsis) Berry, 1929
- Lolliguncula (Lolliguncula) Steenstrup, 1881
- Pleuropoma (Aphanoconia) Wagner, 1905
- Pleuropoma (Pleuropoma) Moellendorff, 1893
- Sepia (Acanthosepion) Rochebrune, 1884
- Sepia (Anomalosepia) Khromov, 1987
- Sepia (Doratosepion) Rochebrune, 1884
- Sepia (Hemisepius) Steenstrup, 1875
- Sepia (Rhombosepion) Rochebrune, 1884
- Sepia (Sepia) Linnaeus, 1758
- Uroteuthis (Photololigo) Natsukari, 1984
- Uroteuthis (Uroteuthis) Rehder, 1945
Врсте
уреди- Abra aequalis (Say, 1822)
- Abra alba
- Abra californica Kundsen, 1970
- Abra lioica (Dall, 1881)
- Abra longicallis Sacchi, 1836
- Abra nitida (O. F. Mueller, 1776)
- Abra pacifica Dall, 1915
- Abra prismatica
- Abra profundorum E. A. Smith, 1885
- Abra tenuis (Montagu, 1818)
- Abra tepocana Dall, 1915
- Abralia andamanica Goodrich, 1896
- Abralia armata (Quoy and Gaimard, 1832)
- Abralia astrolineata Berry, 1914
- Abralia astrosticta Berry, 1909
- Abralia dubia (Adam, 1960)
- Abralia fasciolata Tsuchiya, 1991
- Abralia grimpei Voss, 1959
- Abralia heminuchalis Burgess, 1992
- Abralia marisarabica Okutani, 1983
- Abralia multihamata Sasaki, 1929
- Abralia redfieldi Voss, 1955
- Abralia renschi Grimpe, 1931
- Abralia robsoni Grimpe, 1931
- Abralia siedleckyi Lipinski, 1983
- Abralia similis Okutani and Tsuchiya, 1987
- Abralia spaercki Grimpe, 1931
- Abralia steindachneri Weindl, 1912
- Abralia trigonura Berry, 1913
- Abralia veranyi (Rüppell, 1844)
- Abraliopsis affinis (Pfeffer, 1912)
- Abraliopsis atlantica Nesis, 1982
- Abraliopsis chuni Nesis, 1982
- Abraliopsis falco Young, 1972
- Abraliopsis felis McGowan and Okutani, 1968
- Abraliopsis gilchristi (Robson, 1924)
- Abraliopsis hoylei (Pfeffer, 1884)
- Abraliopsis lineata (Goodrich, 1896)
- Abraliopsis morisi (Verany, 1839)
- Abraliopsis pacificus Tsuchiya and Okutani, 1990
- Abraliopsis pfefferi Joubin, 1896
- Abraliopsis tui Riddell, 1985
- Acanthina lugubris (G. B. Sowerby I, 1821)
- Acanthina paucilirata (Stearns, 1871)
- Acanthina punctulata (G. B. Sowerby I, 1825)
- Acanthina spirata (de Blainville, 1832)
- Acanthocardia aculeata (Linnaeus, 1758)
- Acanthocardia tuberculata (Linnaeus, 1758)
- Acanthochitona angelica Dall, 1919
- Acanthochitona avicula (Carpenter, 1864)
- Acanthochitona balesae Abbott, 1954
- Acanthochitona communis
- Acanthochitona crinita (Pennant, 1777)
- Acanthochitona discrepans (Brown, 1827)
- Acanthochitona fascicularis (Linnaeus, 1767)
- Acanthochitona hemphilli (Pilsbry, 1893)
- Acanthochitona imperatrix Watters, 1981
- Acanthochitona pygmaea (Pilsbry, 1893)
- Acanthochitona roseojugum Lyons, 1988
- Acanthochitona spiculosa Reeve, 1847
- Acanthochitona zebra Lyons, 1988
- Acanthodoris armata O'Donoghue, 1927
- Acanthodoris atrogriseata O'Donoghue, 1927
- Acanthodoris brunnea MacFarland, 1905
- Acanthodoris caerulescens Bergh, 1880
- Acanthodoris hudsoni MacFarland, 1905
- Acanthodoris lutea MacFarland, 1925
- Acanthodoris nanaimoensis O'Donoghue, 1921
- Acanthodoris pilosa (Abildgaard, 1789)
- Acanthodoris rhodoceras Cockerell, 1905
- Acanthopleura granulata (Gmelin, 1791)
- Acanthotrophon striatoides Vokes, 1980
- Acar bailyi Bartsch, 1931
- Acella haldemani (W. G. Binney, 1867)
- Acharax johnsoni (Dall, 1891)
- Achatina fulica (Ferussac, 1821)
- Acila castrensis (Hinds, 1843)
- Acirsa borealis (Lyell, 1841)
- Aclis benedicti (Bartsch, 1947)
- Aclis californica Bartsch, 1927
- Aclis carolinensis Bartsch, 1911
- Aclis conula Dall, 1927
- Aclis cubana (Bartsch, 1911)
- Aclis dalli Bartsch, 1911
- Aclis egregia Dall, 1889
- Aclis eolis Bartsch, 1947
- Aclis georgiana Dall, 1927
- Aclis hendersoni Dall, 1927
- Aclis hyalina Watson, 1880
- Aclis lata Dall, 1889
- Aclis marguerita (Bartsch, 1947)
- Aclis nucleata Dall, 1889
- Aclis occidentalis (Hemphill, 1894)
- Aclis pendata Dall, 1927
- Aclis pyramida Dall, 1927
- Aclis rhyssa Dall, 1927
- Aclis rushi Bartsch, 1911
- Aclis shepardiana Dall, 1919
- Aclis stilifer Dall, 1927
- Aclis striata A. E. Verrill, 1880
- Aclis tenuis A. E. Verrill, 1882
- Aclis turrita (Carpenter, 1864)
- Aclis verrilli Bartsch, 1911
- Aclis walleri Jeffreys, 1867
- Aclistothyra atlantica McGinty, 1955
- Acmaea acutapex S. S. Berry, 1957
- Acmaea antillarum (Sowerby, 1831)
- Acmaea apicina Dall, 1879
- Acmaea atracta Carpenter, 1857
- Acmaea conus Test, 1945
- Acmaea dalliana (Philippi, 1891)
- Acmaea depicta Hinds, 1842
- Acmaea discors (Philippi, 1849)
- Acmaea fascicularis (Menke, 1851)
- Acmaea funiculata (Carpenter, 1864)
- Acmaea instabilis (Gould, 1846)
- Acmaea leucopleura Gmelin, 1791
- Acmaea limatula Carpenter, 1864
- Acmaea marcusi Righi, 1966
- Acmaea mitella Menke, 1847
- Acmaea mitra Eschscholtz, 1833
- Acmaea noronhensis E. A. Smith
- Acmaea paleacea Gould, 1853
- Acmaea pediculus (Philippi, 1846)
- Acmaea pustulata Helbling, 1779
- Acmaea rosea Dall, 1872
- Acmaea stanfordiana (S. S. Berry, 1960)
- Acmaea strongiana Hertlein, 1958
- Acmaea subrugosa Orbigny, 1846
- Acmaea sybaritica Dall, 1871
- Acmaea triangularis (Carpenter, 1864)
- Acmaea turveri Hertlein and Strong, 1951
- Acostaea rivolii (Deshayes, 1827)
- Acroloxus coloradensis (J. Henderson, 1930)
- Acteocina angustior Baker and Hanna, 1927
- Acteocina atrata P. S. Mikkelsen and P. M. Mikkelsen, 1984
- Acteocina bermudensis (Vanatta, 1901)
- Acteocina bidentata (d'Orbigny, 1841)
- Acteocina bullata (Kiener, 1834)
- Acteocina canaliculata (Say, 1826)
- Acteocina candei (d'Orbigny, 1841)
- Acteocina carinata (Carpenter, 1856)
- Acteocina cerealis (Gould, 1853)
- Acteocina culcitella (Gould, 1853)
- Acteocina eburnea A. E. Verrill, 1885
- Acteocina eximia (Baird, 1863)
- Acteocina harpa (Dall, 1871)
- Acteocina hawaiensis
- Acteocina inculta (Gould, 1855)
- Acteocina infrequens (C. B. Adams, 1852)
- Acteocina intermedia Willett, 1928
- Acteocina lepta Woodring, 1928
- Acteocina magdalensis (Dall, 1919)
- Acteocina oldroydi Dall, 1925
- Acteocina oryza (Totten, 1835)
- Acteocina perplicatus Dall, 1889
- Acteocina recta (d'Orbigny, 1841)
- Acteocina smirna Dall, 1919
- Acteon candens Rehder, 1939
- Acteon cumningi A. Adams, 1854
- Acteon danaida Dall, 1881
- Acteon delicatus Dall, 1889
- Acteon finlayi Stearns, 1898
- Acteon hebes
- Acteon incisus Dall, 1881
- Acteon juvenis Dall, 1927
- Acteon lacunatus Dall, 1927
- Acteon liostracoides Dall, 1927
- Acteon melampoides Dall, 1881
- Acteon parallelus Dall, 1927
- Acteon particolor Dall, 1927
- Acteon perforatus Dall, 1881
- Acteon propius Dall, 1927
- Acteon pusillus (Forbes, 1844)
- Acteon semicingulata Dall, 1927
- Acteon tornatilis (Linnaeus, 1758)
- Acteon traskii Stearns, 1898
- Actinonaias computata (Crosse & Fischer, 1894)
- Actinonaias coyensis (Pilsbry, 1910)
- Actinonaias medellina (Lea, 1838)
- Actinonaias moctezumensis (Pilsbry, 1910)
- Actinonaias sapotalensis (Lea, 1841)
- Actinonaias signata (Pilsbry, 1910)
- Actinonaias undivaga (Pilsbry, 1910)
- Aculamprotula coreana (Martens, 1886)
- Aculamprotula fibrosa (Heude, 1877)
- Aculamprotula grandidens (Lea, 1862)
- Aculamprotula nodulosa (Wood, 1815)
- Aculamprotula polysticta (Heude, 1877)
- Aculamprotula scripta (Heude, 1875)
- Aculamprotula tientsinensis (Crosse & Debeaux, 1863)
- Aculamprotula tortuosa (Lea, 1865)
- Aculamprotula zonata (Heude, 1883)
- Acuticosta chinensis (Lea, 1868)
- Acuticosta ovata (Simpson, 1900)
- Acuticosta retiaria (Heude, 1883)
- Acuticosta sichuanica Zeng & Liu, 1989
- Acuticosta trisulcata (Heude, 1883)
- Adalaria albopapillosa (Dall, 1871)
- Adalaria jannae Millen, 1987
- Adalaria loveni (Adler and Hancock, 1862)
- Adalaria pacifica Bergh, 1880
- Adalaria proxima (Alder and Hancock, 1854)
- Adalaria tschuktschica Krause, 1885
- Adalaria virescens Bergh, 1880
- Addisonia brophyi J. H. McLean, 1985
- Addisonia excentrica (Tiberi, 1857)
- Addisonia lateralis (Requien, 1848)
- Addisonia paradoxa Dall, 1882
- Adipicola simpsoni (Marshall, 1900)
- Admete californica (Dall, 1908)
- Admete couthouyi (Jay, 1839)
- Admete gracilior (Carpenter, 1869)
- Admete laevior Leche, 1878
- Admete microscopica (Dall, 1889)
- Admete microsoma (Dall, 1908)
- Admete nodosa Verrill and Smith, 1885
- Admete regina Dall, 1911
- Admete viridula (Fabricius, 1780)
- Adontorhina cyclia S. S. Berry, 1947
- Adontorhina sphaericosa Scott, 1986
- Adrana notabilis Rehder, 1939
- Adrana scaphoides Rehder, 1939
- Adrana tellinoides (Sowerby, 1823)
- Adula californiensis (Philippi, 1847)
- Adula diegensis (Dall, 1911)
- Adula falcata (Gould, 1851)
- Adula gruneri (Philippi, 1851)
- Adula schmidtii (Schrenck, 1867)
- Aegires albopunctatus MacFarland, 1905
- Aegires albus Thiele, 1912
- Aegires citrinus (Bergh, 1875)
- Aegires exeches Fahey and Gosliner, 2004
- Aegires flores Fahey and Gosliner, 2004
- Aegires gardineri (Eliot, 1906)
- Aegires gomezi Ortea, Luque and Templado, 1990
- Aegires hapsis Fahey and Gosliner, 2004
- Aegires incisus (Sars, 1878)
- Aegires incusus Fahey and Gosliner, 2004
- Aegires lemoncello Fahey and Gosliner, 2004
- Aegires leuckartii Verany, 1853
- Aegires malinus Fahey and Gosliner, 2004
- Aegires minor (Eliot, 1904)
- Aegires ninguis Fahey and Gosliner, 2004
- Aegires ortizi Templado, Luque and Ortea, 1987
- Aegires palensis Ortea, Luque and Templado, 1990
- Aegires petalis Fahey and Gosliner, 2004
- Aegires pruvotfolae Fahey and Gosliner, 2004
- Aegires punctilucens (d'Orbigny, 1837)
- Aegires serenae (Gosliner and Behrens, 1997)
- Aegires sublaevis Odhner, 1932
- Aegires villosus Farran, 1905
- Aeolidia papillosa (Linnaeus, 1761)
- Aeolidiella alderi
- Aeolidiella chromosoma (Cockerell, 1905)
- Aeolidiella glauca (Alder and Hancock, 1845)
- Aeolidiella indica Bergh, 1888
- Aeolidiella lurana Marcus and Marcus, 1967
- Aeolidiella occidentalis Bergh, 1875
- Aeolidiella olivae MacFarland, 1966
- Aeolidiella sanguinea (Norman, 1877)
- Aeolidiella takanosimensis Baba, 1930
- Aequipecten glyptus (A. E. Verrill, 1882)
- Aequipecten heliacus (Dall, 1925)
- Aequipecten lineolaris (Lamarck, 1819)
- Aequipecten opercularis (Linnaeus, 1758)
- Aesopus arestus Dall, 1919
- Aesopus babbi (Tryon, 1882)
- Aesopus chrysalloideus (Carpenter, 1864)
- Aesopus eurytoideus (Carpenter, 1864)
- Aesopus fuscostrigatus (Carpenter, 1864)
- Aesopus goforthi Dall, 1912
- Aesopus japonicus Gould, 1860
- Aesopus metcalfei Reese
- Aesopus myrmecoon Dall, 1916
- Aesopus sanctus Dall, 1919
- Aesopus stearnsii (Tryon, 1883)
- Aesopus subturritus (Carpenter, 1864)
- Aesopus xenicus Pilsbry and Lowe, 1932
- Aforia circinata (Dall, 1873)
- Aforia goodei (Dall, 1890)
- Agathotoma candidissima (C. B. Adams, 1845)
- Agathotoma densestriata (C. B. Adams, 1850)
- Agathotoma stellata (Morch, 1860)
- Agatrix agassizii (Dall, 1889)
- Aglaja diomedea (Bergh, 1894)
- Aglaja ocelligera (Bergh, 1893)
- Agriopoma texasianum (Dall, 1892)
- Akera bayeri Marcus and Marcus, 1967
- Akera bullata O. F. Muller, 1776
- Akera thompsoni Olsson and McGinty, 1951
- Akiodoris lutescens Bergh, 1880
- Alaba catalinensis Bartsch, 1920
- Alaba incerta (d'Orbigny, 1842)
- Alaba jeanettae Bartsch, 1910
- Alaba serrana A. G. Smith and Gordon, 1948
- Alasmidonta arcula (Lea, 1838)
- Alasmidonta atropurpurea (Rafinesque, 1831)
- Alasmidonta marginata Say, 1818
- Alasmidonta mccordi Athearn, 1964
- Alasmidonta raveneliana (Lea, 1834)
- Alasmidonta robusta Clarke, 1981
- Alasmidonta triangulata (Lea, 1858)
- Alasmidonta undulata (Say, 1817)
- Alasmidonta uwharriensis Whelan, Perkins & Mays in Whelan et al., 2023
- Alasmidonta varicosa (Lamarck, 1819)
- Alasmidonta wrightiana (Walker, 1901)
- Alasminota etowaensis (Conrad, 1849)
- Alathyria condola Iredale, 1943
- Alathyria jacksoni Iredale, 1934
- Alathyria pertexta Iredale, 1934
- Alathyria profuga (Gould, 1850)
- Alcadia striata (Lamarck, 1822)
- Alderia modesta (Loven, 1844)
- Aldisa albomarginata Millen, 1984
- Aldisa cooperi Robilliard and Baba, 1972
- Aldisa sanguinea (J. G. Cooper, 1863)
- Aldisa tara Millen, 1984
- Aldisa zetlandica (Alder and Hancock, 1854)
- Alexandromenia crassa Odhner, 1921
- Alexania floridana (Pilsbry, 1945)
- Algamorda newcombiana (Hempill, 1876)
- Alia carinata (Hinds, 1844)
- Alia tuberosa (Carpenter, 1864)
- Aligena diegoana Hertlein and Grant, 1972
- Aligena elevata (Stimpson, 1851)
- Aligena texasiana Harry, 1969
- Allogona lombardii A. G. Smith, 1943
- Allogona profunda (Say, 1821)
- Allogona ptychophora (A. D. Brown, 1870)
- Allogona townsendiana (I. Lea, 1838)
- Allonautilus perforatus (Conrad, 1849)
- Allonautilus scrobiculatus (Lightfoot, 1786)
- Allopeas clavulinum (Potiez and Michaud, 1838)
- Allopeas gracile (Hutton, 1834)
- Allopeas mauritianum (Pfeiffer, 1852)
- Alluroteuthis antarcticus Odhner, 1923
- Alvania aberrans (C. B. Adams, 1850)
- Alvania abyssicola (Forbes, 1850)
- Alvania acuticostata (Dall, 1889)
- Alvania aequisculpta Keep, 1887
- Alvania alaskana Dall, 1886
- Alvania albolirata (Carpenter, 1864)
- Alvania almo Bartsch, 1911
- Alvania apicina Verrill, 1884
- Alvania areolata Stimpson, 1851
- Alvania auberiana (d'Orbigny, 1842)
- Alvania aurivilli Dall, 1886
- Alvania bakeri Bartsch, 1910
- Alvania bartolomensis Bartsch, 1917
- Alvania beanii (Hanley, 1844)
- Alvania brychia (Verrill, 1884)
- Alvania burrardensis Bartsch, 1921
- Alvania campta (Dall, 1927)
- Alvania cancellata (Da Costa, 1778)
- Alvania canonica (Dall, 1927)
- Alvania carinata Mighels and Adams, 1842
- Alvania carpenteri (Weinkauff, 1885)
- Alvania castanella Dall, 1886
- Alvania chiriquiensis Olsson and McGinty, 1958
- Alvania cimicoides (Forbes, 1844)
- Alvania compacta (Carpenter, 1864)
- Alvania contrerasi Jordan, 1909
- Alvania cosmia Bartsch, 1911
- Alvania dalli Bartsch, 1927
- Alvania dinora Bartsch, 1917
- Alvania electrina (Carpenter, 1864)
- Alvania exarata Stimpson, 1851
- Alvania filosa Carpenter, 1864
- Alvania gallegosi
- Alvania globula (Moller, 1842)
- Alvania gradata (Orbigny, 1842)
- Alvania harpa Verrill, 1882
- Alvania herrerae Baker, Hanna, and Strong, 1930
- Alvania jeffreysi (Waller, 1864)
- Alvania karlini A. H. Clarke, 1963
- Alvania keenae Gordon, 1939
- Alvania kyskaensis Bartsch, 1917
- Alvania lactea
- Alvania lampra (Dall, 1927)
- Alvania latior (Mighels and C. B. Adams, 1842)
- Alvania leptalea Verrill, 1884
- Alvania lucasana (Baker, Hanna, and Stong, 1930)
- Alvania microglypta Haas, 1943
- Alvania moerchi (Collins, 1886)
- Alvania monserratensis (Baker, Hanna, and Strong, 1930)
- Alvania montereyensis Bartsch, 1911
- Alvania multilineata (Stimpson, 1851)
- Alvania nigriscens Bartsch and Rehder, 1939
- Alvania oldroydae Bartsch, 1911
- Alvania pedroana Bartsch, 1911
- Alvania precipitata (Dall, 1889)
- Alvania pseudoareolata Waren, 1974
- Alvania pseudosyngenes Waren, 1973
- Alvania punctura
- Alvania purpurea Dall, 1871
- Alvania rosana Bartsch, 1911
- Alvania sandersoni Verrill, 1884
- Alvania sanjuanensis Bartsch, 1920
- Alvania semistriata (Montagu, 1808)
- Alvania subsoluta (Aradas, 1847)
- Alvania trachisma Bartsch, 1911
- Alvania tumida Carpenter, 1857
- Alvania turgida Verrill, 1880
- Alvania wyvillethomosoni (Friele, 1877)
- Alvania xanthias (Watson, 1886)
- Amaea mitchelli (Dall, 1896)
- Amaea retifera (Dall, 1889)
- Amauropsis islandica (Gmelin, 1791)
- Amauropsis purpurea Dall, 1871
- Amblema elliottii (Lea, 1856)
- Amblema neislerii (Lea, 1858)
- Amblema plicata (Say, 1817)
- Ameloctopus litoralis Norman, 1992
- Americardia biangulata (Broderip and G. B. Sowerby I, 1829)
- Americardia guppyi (Thiele, 1910)
- Americardia media (Linnaeus, 1758)
- Americhiton andersoni (Watters, 1981)
- Amiantis callosa (Conrad, 1837)
- Amicula amiculata (Pallas, 1787)
- Amicula pallasii (Middendorff, 1847)
- Amicula vestita (Broderip and G. B. Sowerby I, 1829)
- Ammonicera rota
- Ammonitella yatesii (J. G. Cooper, 1968)
- Amnicola clarkei Pilsbry, 1917
- Amnicola cora Hubricht, 1979
- Amnicola dalli (Pilsbry and Beecher, 1892)
- Amnicola decisus Haldeman, 1845
- Amnicola limosus (Say, 1817)
- Amnicola rhombostoma F. G. Thompson, 1968
- Amnicola stygius Hubricht, 1971
- Amphigyra alabamensis Pilsbry, 1906
- Amphissa acutecostata (Philippi, 1844)
- Amphissa bicolor Dall, 1892
- Amphissa columbiana Dall, 1916
- Amphissa cymata Dall, 1916
- Amphissa haliaeeti (Jeffreys, 1867)
- Amphissa reticulata Dall, 1916
- Amphissa undata (Carpenter, 1864)
- Amphissa versicolor Dall, 1871
- Amphithalamus inclusus Carpenter, 1864
- Amphithalamus lacunatus Carpenter, 1864
- Amphithalamus stephensae
- Amphithalamus tenuis
- Amphithalamus vallei Aguayo and Jaume, 1947
- Amphitretus pelagicus Hoyle, 1885
- Amuranodonta kijaensis Moskvicheva, 1973
- Amusium papyraceum (Gabb, 1873)
- Amygdalum dendriticum Muhlfeld, 1811
- Amygdalum pallidulum (Dall, 1916)
- Amygdalum papyrium (Conrad, 1846)
- Amygdalum politum (A. E. Verrill and S. Smith, 1880)
- Amygdalum sagittatum Rehder, 1934
- Anabathron contabulata Frauenfeld, 1867
- Anabathron muriel Bartsch and Rehder, 1939
- Anachis acuta Stearn, 1873
- Anachis adelinae (Tryon, 1883)
- Anachis albella C. B. Adams, 1850
- Anachis avara (Say, 1822)
- Anachis bicanaliferum (Sowerby, 1832)
- Anachis catenata (Sowerby, 1844)
- Anachis coronata (Sowerby, 1832)
- Anachis diminuta (C. B. Adams, 1852)
- Anachis fayae Keen, 1971
- Anachis fenneli Radwin, 1968
- Anachis floridana Rehder, 1939
- Anachis gaskoini Carpenter, 1857
- Anachis hilli Pilsbry and Lowe, 1932
- Anachis hotessieriana (d'Orbigny, 1842)
- Anachis iontha (Ravenel, 1861)
- Anachis lafresnayi (P. Fischer and Bernardi, 1856)
- Anachis nigricans (Sowerby, 1844)
- Anachis obesa C. B. Adams, 1845
- Anachis penicillata Carpenter, 1865
- Anachis petrii
- Anachis pulchella (de Blainville, 1829)
- Anachis pygmaea (Sowerby, 1832)
- Anachis rhodae Radwin, 1968
- Anachis samanensis
- Anachis sanfelipensis Lowe, 1935
- Anachis semiplicata Stearns, 1873
- Anachis similis Dall, 1889
- Anachis sparsa (Reeve, 1859)
- Anachis subturrita Carpenter, 1866
- Anachis translirata (Ravenel, 1861)
- Anachis veleda Duclos, 1846
- Anachis vexillum (Reeve, 1858)
- Anacithara perfecata
- Anadara auriculata Lamarck
- Anadara baughmani Hertlein, 1951
- Anadara brasiliana (Lamarck, 1819)
- Anadara chemnitzii (Philippi, 1851)
- Anadara concinna (Sowerby, 1833)
- Anadara floridana (Conrad, 1869)
- Anadara grandis (Broderip and Sowerby, 1829)
- Anadara lienosa (Say, 1832)
- Anadara multicostata (G. B. Sowerby I, 1833)
- Anadara notabilis (Roding, 1798)
- Anadara nux (Sowerby, 1833)
- Anadara ovalis (Bruguiere, 1789)
- Anadara secticostata Reeve, 1844
- Anadara transversa (Say, 1822)
- Anadara tuberculosa (G. B. Sowerby I, 1833)
- Anadenulus cockerelli (Hemphill, 1890)
- Anamenia borealis (Koren and Danielssen, 1877)
- Anatina anatina (Spengler, 1802)
- Anatoma baxteri J. H. McLean, 1984
- Anatoma crispata (Fleming, 1828)
- Anatoma lyra (S. S. Berry, 1947)
- Anatoma obtusata (Golikov and Gulbin, 1977)
- Ancilla glabrata (Linnaeus, 1758)
- Ancilla lienardi (Bernardi, 1858)
- Ancilla tankervillii (Swainson, 1825)
- Ancistrobasis costulata (Watson, 1879)
- Ancistrobasis depressa (Dall, 1889)
- Ancistrobasis lusitanica (P. Fischer, 1882)
- Ancistrocheirus lesueurii (D'Orbigny, 1842 in Férussac and D'Orbigny, 1834-1848)
- Ancistrolepis beringianus Dall, 1919
- Ancistrolepis buccinoidea
- Ancistrolepis eucosmius (Dall, 1891)
- Ancistrolepis hirasei
- Ancistrolepis hirsuta
- Ancistrolepis magna (Dall, 1895)
- Ancistroteuthis lichtensteini (Férussac, 1835 in Férussac and D'Orbigny, 1834-1848)
- Ancotrema hybridum (Ancey, 1888)
- Ancotrema sportella (Gould, 1846)
- Ancotrema voyanum (Newcomb, 1865)
- Ancotrema zopherum Roth, 1990
- Ancula evelinae Er. Marcus, 1961
- Ancula gibbosa (Risso, 1818)
- Ancula lentiginosa Farmer, 1964
- Ancula pacifica MacFarland, 1905
- Ancylus fluviatilis Müller, 1774
- Anemina arcaeformis (Heude, 1877)
- Anemina euscaphys (Heude, 1879)
- Anemina fluminea (Heude, 1877)
- Anemina globosula (Heude, 1878)
- Anguispira alabama (G. H. Clapp, 1920)
- Anguispira alternata (Say, 1816)
- Anguispira cumberlandiana (I. Lea, 1840)
- Anguispira fergusoni (Bland, 1861)
- Anguispira jessica Kutchka, 1938
- Anguispira knoxensis (Pilsbry, 1899)
- Anguispira kochi (Pfeiffer, 1821)
- Anguispira macneilli Walker, 1928
- Anguispira mordax (Shuttleworth, 1852)
- Anguispira nimapuna H. B. Baker, 1932
- Anguispira picta (G. H. Clapp, 1920)
- Anguispira rugoderma Hubricht, 1938
- Anguispira strongyloides (Pfeiffer, 1854)
- Angustipes ameghini (Gambetta, 1923)
- Anidolyta duebenii (Loven, 1846)
- Anidolyta spongotheras (Bertsch, 1980)
- Anisodonta carolina Dall, 1900
- Anisodoris lentiginosa Millen, 1982
- Anisodoris nobilis (MacFarland, 1905)
- Anisodoris prea Ev. Marcus and Er. Marcus, 1967
- Anisodoris worki Ev. Marcus and Er. Marcus, 1967
- Anodonta anatina (Linnaeus, 1758)
- Anodonta californiensis Lea, 1852
- Anodonta cygnea (Linnaeus, 1758)
- Anodonta exulcerata Porro, 1838
- Anodonta impura Say, 1829
- Anodonta kennerlyi Lea, 1860
- Anodonta lurulenta Morelet, 1849
- Anodonta nuttalliana Lea, 1838
- Anodonta oregonensis Lea, 1838
- Anodonta seddoni Gürlek, Kebapci & Lopes-Lima in Lopes-Lima et al., 2021
- Anodonta vescoiana Bourguignat, 1857
- Anodontia alba Link, 1807
- Anodontia edentula (Linnaeus, 1758)
- Anodontia edentuloides (Verrill, 1870)
- Anodontia philippiana (Reeve, 1850)
- Anodontites aroana H.B. Baker, 1930
- Anodontites carinata (Dunker, 1858)
- Anodontites colombiensis Marshall, 1922
- Anodontites crispata Bruguière, 1792
- Anodontites cylindracea (Lea, 1838)
- Anodontites depexus (Martens, 1900)
- Anodontites elongata (Swainson, 1823)
- Anodontites ferrarisii (d'Orbigny, 1835)
- Anodontites guanarensis Marshall, 1927
- Anodontites iheringi (Clessin, 1882)
- Anodontites inaequivalva (Lea, 1868)
- Anodontites infossus H.B. Baker, 1930
- Anodontites leotaudi (Guppy, 1866)
- Anodontites lucida (d'Orbigny, 1835)
- Anodontites moricandii (Lea, 1860)
- Anodontites obtusa (Spix & Wagner, 1827)
- Anodontites patagonica (Lamarck, 1819)
- Anodontites pittieri Marshall, 1922
- Anodontites schomburgianus (Sowerby, 1870)
- Anodontites solenidea (Sowerby, 1867)
- Anodontites tehuantepecensis (Crosse & Fischer, 1893)
- Anodontites tenebricosa (Lea, 1834)
- Anodontites tortilis (Lea, 1852)
- Anodontites trapesialis (Lamarck, 1819)
- Anodontites trapezea (Spix & Wagner, 1827)
- Anodontites trigona (Spix & Wagner, 1827)
- Anodontoides denigratus (Lea, 1852)
- Anodontoides ferussacianus (Lea, 1834)
- Anomalocardia auberiana (d'Orbigny, 1842)
- Anomalocardia brasiliana (Gmelin, 1791)
- Anomalocardia leptalea (Dall, 1894)
- Anomia chinensis Philippi, 1849
- Anomia ephippium Linnaeus, 1758
- Anomia peruviana d'Orbigny, 1846
- Anomia simplex D'Orbigny, 1842
- Anomia squamula Linnaeus, 1758
- Antalis abyssorum (M. Sars, 1858)
- Antalis agilis M. Sars, 1872
- Antalis antillarum (d'Orbigny, 1842)
- Antalis bartletti (Henderson, 1920)
- Antalis berryi (A. G. Smith and M. Gordon, 1948)
- Antalis callithrix (Dall, 1889)
- Antalis ceratum (Dall, 1881)
- Antalis circumcinctum (Watson, 1879)
- Antalis entale (Linnaeus, 1758)
- Antalis novemcostata (Lamarck, 1818)
- Antalis occidentale (Stimpson, 1851)
- Antalis panormum (Chenu, 1843)
- Antalis pilsbryi (Rehder, 1942)
- Antalis pretiosum (G. B. Sowerby II, 1860)
- Antalis taphrium (Dall, 1889)
- Antalis tubulatum (Henderson, 1920)
- Antalis vulgaris (da Costa, 1778)
- Anticlimax athleenae (Pilsbry and McGinty, 1946)
- Anticlimax pilsbryi (McGinty, 1945)
- Antillophos beauii (P. Fischer and Bernardi, 1857)
- Antillophos candeanus (d'Orbigny, 1842)
- Antiplanes abarbareus Dall, 1919
- Antiplanes beringi (Aurivillius, 1885)
- Antiplanes briseis Dall, 1919
- Antiplanes bulimoides Dall, 1919
- Antiplanes catalinae (Raymond, 1904)
- Antiplanes diaulax (Dall, 1908)
- Antiplanes hyperia Dall, 1919
- Antiplanes kamchatica Dall, 1919
- Antiplanes litus Dall, 1919
- Antiplanes major Bartsch, 1944
- Antiplanes motojimai (Habe, 1958)
- Antiplanes piona (Dall, 1902)
- Antiplanes rotula Dall, 1921
- Antiplanes sanctiioannis (E. A. Smith, 1875)
- Antiplanes santarosanus (Dall, 1902)
- Antiplanes thalea (Dall, 1902)
- Antiplanes vinosus (Dall, 1874)
- Antiplanes voyi (Gabb, 1866)
- Antiplanes willetti S. S. Berry, 1953
- Antisabia foliaceus
- Antrobia culveri Hubricht, 1971
- Antrorbis breweri Hershler and F. G. Thompson, 1990
- Antrorbis tennesseensis Perez, Shoobs, Gladstone and Niemiller, 2019
- Antroselates spiralis Hubricht, 1963
- Aorotrema cistronium (Dall, 1889)
- Aorotrema erraticum Pilsbry and McGinty, 1945
- Aorotrema humboldti
- Aorotrema pontogenes (Schwengel and McGinty, 1942)
- Aperiovula abbotti Cate, 1973
- Aphaostracon asthenes F. G. Thompson, 1968
- Aphaostracon chalarogyrus F. G. Thompson, 1968
- Aphaostracon hypohyalinum F. G. Thompson, 1968
- Aphaostracon monas (Pilsbry, 1899)
- Aphaostracon pachynotum F. G. Thompson, 1968
- Aphaostracon pycnus F. G. Thompson, 1968
- Aphaostracon rhadinum F. G. Thompson, 1968
- Aphaostracon theiocrenetum F. G. Thompson, 1968
- Aphaostracon xynoelictum F. G. Thompson, 1968
- Aphelodoris antillensis (Bergh, 1879)
- Aphrodoctopus schultzei (Hoyle, 1910)
- Aplexa elongata (Say, 1821)
- Aplexa hypnorum (Linnaeus, 1758)
- Aplysia brasiliana Rang, 1828
- Aplysia californica J. G. Cooper, 1863
- Aplysia cervina (Dall and Simpson, 1901)
- Aplysia dactylomela Rang, 1828
- Aplysia depilans Gmelin, 1791
- Aplysia donca Ev. Marcus and Er. Marcus, 1960
- Aplysia fasciata Poiret, 1798
- Aplysia geographica (A. Adams and Reeve, 1850)
- Aplysia juliana Quoy and Gaimard, 1832
- Aplysia morio (A. E. Verrill, 1901)
- Aplysia parvula Morch, 1863
- Aplysia punctata
- Aplysia reticulopoda Beeman, 1960
- Aplysia vaccaria Winkler, 1955
- Aplysiopsis enteromorphae (Cockerell and Eliot, 1905)
- Aplysiopsis olivae Mcfarland, 1966
- Aplysiopsis smithi (Er. Marcus, 1961)
- Aplysiopsis zebra K. B. Clark, 1982
- Aporrhais occidentalis Beck, 1836
- Aporrhais pespelicanis Linnaeus, 1758
- Aporrhais serresiana
- Appalachina chilhoweensis (J. Lewis, 1870)
- Appalachina sayana (Pilsbry, 1906)
- Aquilonaria turneri Dall, 1886
- Arca imbricata Bruguiere, 1789
- Arca lactea
- Arca mutabilis Sowerby, 1833
- Arca reticulata Gmelin, 1791
- Arca tetragona Poli, 1795
- Arca zebra (Swainson, 1833)
- Archidoris montereyensis (J. G. Cooper, 1863)
- Archidoris nobilis
- Archidoris odhneri (MacFarland, 1966)
- Archidoris pseudoargus (Rapp, 1827)
- Archiphysa ashmuni Taylor, 2003
- Archiphysa sonomae Taylor, 2003
- Architectonica nobilis Roding, 1798
- Architectonica peracuta (Dall, 1889)
- Architectonica perspectiva (Linnaeus, 1758)
- Architectonica placentalis (Hinds, 1844)
- Architeuthis dux Steenstrup in Harting, 1860
- Architeuthis hartingii (Verrill, 1875)
- Architeuthis japonica Pfeffer, 1912
- Architeuthis kirkii Robson, 1887
- Architeuthis physeteris (Joubin, 1900)
- Architeuthis sanctipauli (Velain, 1877)
- Architeuthis verrilli Kirk, 1882
- Arcidens confragosus (Say, 1829)
- Arcidens wheeleri (Ortmann & Walker, 1912)
- Arcidopsis footei (Theobald, 1876)
- Arcinella arcinella (Linnaeus, 1767)
- Arcinella cornuta Conrad, 1866
- Arcopagia crassa (Pennant, 1777)
- Arcopsis adamsi (Dall, 1886)
- Arcopsis solida (G. B. Sowerby I, 1833)
- Arctica islandica (Linnaeus, 1767)
- Arctomelon stearnsii (Dall, 1872)
- Arctomelon tamikoae (Kosuge, 1970)
- Arculus sykesi (Chaster, 1895)
- Arene adusta J. H. McLean, 1970
- Arene bairdii (Dall, 1889)
- Arene balboai (Strong and Hertlein, 1939)
- Arene brasiliana (Dall, 1927)
- Arene briareus (Dall, 1881)
- Arene californica (Dall, 1908)
- Arene carinata Carpenter, 1857
- Arene coronadensis (Stohler, 1959)
- Arene cruentata (Megerle von Muhlfeld, 1829)
- Arene diegensis J. H. McLean, 1964
- Arene farallonensis (A. G. Smith, 1952)
- Arene ferruginosa J. H. McLean, 1970
- Arene fricki Crosse, 1865
- Arene lepidotera (J. H. Mclean, 1970)
- Arene lucasensis Strong, 1933
- Arene miniata (Dall, 1889)
- Arene riisei Rehder, 1943
- Arene stellata J. H. McLean, 1970
- Arene tricarinata (Stearns, 1872)
- Arene variabilis (Dall, 1889)
- Arene venusta (Woodring, 1928)
- Arene venustula Aguayo and Rehder, 1936
- Argonauta argo Linnaeus, 1758
- Argonauta bottgeri Maltzan, 1881
- Argonauta cornuta Conrad, 1854
- Argonauta hians Lightfoot, 1786
- Argonauta nodosa Lightfoot, 1786
- Argonauta nouryi Lorois, 1852
- Argonauta pacifica Dall, 1871
- Argopecten aequisulcatus (Carpenter, 1864)
- Argopecten gibbus (Linnaeus, 1758)
- Argopecten irradians (Lamarck, 1819)
- Argopecten lineolaris (Lamarck, 1819)
- Argopecten nucleus (Born, 1778)
- Argopecten ventricosus (G. B. Sowerby II, 1842)
- Ariolimax californicus J. G. Cooper, 1872
- Ariolimax columbianus (Gould, 1851)
- Ariolimax dolichophallus Mead, 1943
- Arion ater (Linnaeus, 1758)
- Arion circumscriptus Johnston, 1828
- Arion distinctus Mabille, 1868
- Arion fasciatus (Nilsson, 1823)
- Arion hortensis Ferussac, 1819
- Arion intermedius (Normand, 1852)
- Arion owenii Davies, 1979
- Arion rufus (Linnaeus, 1758)
- Arion silvaticus Lohmander, 1937
- Arion subfuscus (Draparnaud, 1805)
- Armina californica (J. G. Cooper, 1863)
- Armina cordellensis Gosliner and Behrens, 1996
- Armina loveni
- Armina mulleri (von Ihering, 1886)
- Armina tigrina Rafinesque, 1814
- Armina wattla Ev. Marcus and Er. Marcus, 1967
- Arotonaias cyrenoides (Philippi, 1847)
- Arotonaias encarpa (Lea, 1868)
- Arotonaias gabbiana (Lea, 1868)
- Asaphis deflorata (Linnaeus, 1758)
- Ascobulla ulla (Er. Marcus and Ev. Marcus, 1970)
- Ashmunella amblya Pilsbry, 1940
- Ashmunella angulata Pilsbry, 1905
- Ashmunella animasensis Vagvolgyi, 1974
- Ashmunella ashmuni (Dall, 1897)
- Ashmunella auriculata Vagvolgyi, 1974
- Ashmunella bequaerti Clench and W. B. Miller, 1966
- Ashmunella binneyi Pilsbry and Ferriss, 1917
- Ashmunella carlsbadensis Pilsbry, 1932
- Ashmunella chiricahuana (Dall, 1896)
- Ashmunella cockerelli Pilsbry and Ferriss, 1917
- Ashmunella danielsi Pilsbry and Ferriss, 1915
- Ashmunella edithae Pilsbry and Cheatum, 1951
- Ashmunella esuritor Pilsbry, 1915
- Ashmunella ferrissi Pilsbry, 1905
- Ashmunella harrisi Metcalf and Smartt, 1977
- Ashmunella hebardi Pilsbry and Vanatta, 1923
- Ashmunella kochii G. H. Clapp, 1908
- Ashmunella lenticula Gregg, 1953
- Ashmunella lepiderma Pilsbry and Ferriss, 1910
- Ashmunella levettei (Bland, 1881)
- Ashmunella macromphala Vagvolgyi, 1974
- Ashmunella mearnsii (Dall, 1895)
- Ashmunella mendax Pilsbry and Ferriss, 1917
- Ashmunella mogollonensis Pilsbry, 1905
- Ashmunella mudgei Cheatum, 1971
- Ashmunella organensis Pilsbry, 1936
- Ashmunella pasonis (Drake, 1951)
- Ashmunella pilsbryana Ferriss, 1914
- Ashmunella proxima Pilsbry, 1905
- Ashmunella pseudodonta (Dall, 1897)
- Ashmunella rhyssa (Dall, 1897)
- Ashmunella rileyensis Metcalf and Hurley, 1971
- Ashmunella salinasensis Vagvolgyi, 1974
- Ashmunella sprouli R. W. Fullington and K. E. Fullington, 1978
- Ashmunella tetrodon Pilsbry and Ferriss, 1915
- Ashmunella thomsoniana (Ancey, 1887)
- Ashmunella todseni Metcalf and Smartt, 1977
- Ashmunella varicifera Ancey, 1901
- Ashmunella walkeri Ferriss, 1904
- Aspatharia chaiziana (Rang, 1835)
- Aspatharia dahomeyensis (Lea, 1859)
- Aspatharia divaricata (Martens, 1897)
- Aspatharia droueti (Chaper, 1885)
- Aspatharia ganciniensis (Rochebrune, 1886)
- Aspatharia marnoi (Jickeli, 1874)
- Aspatharia pangallensis (Rochebrune, 1882)
- Aspatharia pfeifferiana (Bernardi, 1860)
- Aspatharia rochebrunei (Jousseaume, 1886)
- Aspatharia rugifera (Dunker, 1858)
- Aspatharia subreniformis (Sowerby, 1867)
- Aspella abyssicola (Crosse, 1865)
- Aspella anceps (Lamarck, 1822)
- Aspella bakeri Hertlein and Strong, 1951
- Aspella castor Radwin and D'Attilio, 1976
- Aspella elizabethae (McGinty, 1940)
- Aspella paupercula (C. B. Adams, 1850)
- Aspella senex Dall, 1903
- Asperiscala bellastriata (Carpenter, 1864)
- Asperiscala cookeana (Dall, 1917)
- Asperiscala lowei (Dall, 1906)
- Assiminea californica (Tryon, 1865)
- Assiminea grayana Fleming, 1828
- Assiminea infima S. S. Berry, 1947
- Assiminea pecos Taylor, 1987
- Assiminea succinea (Pfeiffer, 1840)
- Assiminea translucens (Carpenter, 1864)
- Astarte acuticostata J. G. Jeffreys, 1881
- Astarte arctica (J. E. Gray, 1824)
- Astarte bennetti Dall, 1903
- Astarte borealis (Schumacher, 1817)
- Astarte castanea (Say, 1822)
- Astarte compacta Carpenter, 1864
- Astarte crebricostata (Da Costa, 1778)
- Astarte crenata (J. E. Gray, 1824)
- Astarte elliptica (T. Brown, 1827)
- Astarte esquimalti (Baird, 1863)
- Astarte filatovae Habe, 1964
- Astarte globula Dall, 1886
- Astarte laurentiana
- Astarte liogona Dall, 1903
- Astarte mirabilis (Dall, 1871)
- Astarte montagui (Dillwyn, 1817)
- Astarte nana Dall, 1886
- Astarte polaris Dall, 1903
- Astarte quadrans Gould, 1841
- Astarte smithii Dall, 1886
- Astarte sulcata (Decosta, 1778)
- Astarte triangularis
- Astarte undata Gould, 1841
- Astarte vernicosa Dall, 1903
- Astarte willetti Dall, 1917
- Asterophila japonica Randall and Heath, 1912
- Asthelys munda (Watson, 1879)
- Asthenothaerus diegensis (Dall, 1915)
- Asthenothaerus hemphilli Dall, 1886
- Asthenothaerus villosior Carpenter, 1864
- Astraea olivaceae (Wood, 1828)
- Astralium brevispina (Lamarck, 1822)
- Astralium phoebium (Röding, 1798)
- Astyris amiantis Dall, 1919
- Astyris aurantiaca Dall, 1871
- Astyris diaphana A. E. Verrill, 1882
- Astyris gausapata (Gould, 1850)
- Astyris hypodra (Dall, 1916)
- Astyris lunata (Say, 1826)
- Astyris multilineata (Dall, 1889)
- Astyris profundi (Dall, 1889)
- Astyris pura A. E. Verrill, 1882
- Astyris raveneli (Dall, 1889)
- Astyris rosacea (Gould, 1839)
- Atagema alba (O'Donoghue, 1927)
- Atagema gibba Pruvot-fol, 1951
- Atagema prea (Ev. Marcus and Er. Marcus, 1967)
- Atagema quadrimaculata Collier, 1963
- Athearnia anthonyi (Redfield, 1854)
- Athearnia crassa (Haldeman, 1841)
- Atlanta brunnea J. E. Gray, 1850
- Atlanta californiensis Seapy and Richter, 1993
- Atlanta gaudichaudi Souleyet, 1852
- Atlanta helicinoidea J. E. Gray, 1850
- Atlanta inclinata J. E. Gray, 1850
- Atlanta inflata J. E. Gray, 1850
- Atlanta lesueurii J. E. Gray, 1850
- Atlanta peronii Lesueur, 1817
- Atlanta pulchella Verrill, 1884
- Atlanta quoyii Gray, 1850
- Atlanta turriculata D'Orbigny, 1836
- Atlanticoncha ochracea (Say, 1817)
- Atrina fragilis (Pennant, 1777)
- Atrina oldroydii Dall, 1901
- Atrina rigida (Lightfoot, 1786)
- Atrina seminuda (Lamarck, 1819)
- Atrina serrata (G. B. Sowerby I, 1825)
- Atrina texta Hertlein, Hanna and Strong, 1943
- Attiliosa philippiana (Dall, 1889)
- Atys caribaeus (d'Orbigny, 1841)
- Atys castus Carpenter, 1864
- Atys curta
- Atys nonscriptus (A. Adams, 1850)
- Atys obscuratus Dall, 1896
- Atys riiseanus Morch, 1875
- Atys sandersoni Dall, 1881
- Atys semistriata
- Austraeolis catina Ev. Marcus and Er. Marcus, 1967
- Austroneaera semipellucida (Kuroda, 1948)
- Austrorossia antillensis (Voss, 1955)
- Austrorossia australis (Berry, 1918)
- Austrorossia bipapillata (Sasaki, 1920)
- Austrorossia enigmatica (Robson, 1924)
- Austrorossia mastigophora (Chun, 1915)
- Austrotrophon catalinensis (I. S. Oldroyd, 1927)
- Austrotrophon cerrosensis
- Axelella smithii (Dall, 1888)
- Axinodon redondoensis (T. A. Burch, 1941)
- Axinodon symmetros (Jeffreys, 1876)
- Axinopsida cordata (A. E. Verrill and Bush, 1898)
- Axinopsida orbiculata (G. O. Sars, 1878)
- Axinopsida serricata (Carpenter, 1864)
- Axinopsida viridis (Dall, 1901)
- Axinulus careyi Bernard, 1979
- Axinulus eumyaria (M. Sars, 1870)
- Axinulus redondoensis (T. A. Burch, 1941)
- Babakina festiva (Roller, 1972)
- Babelomurex dalli (Emerson and D'Attilio, 1963)
- Babelomurex mansfieldi (McGinty, 1940)
- Babelomurex oldroydi (I. S. Oldroyd, 1929)
- Bactrocythara asarca (Dall and Simpson, 1901)
- Bactrocythara obtusa Guppy, 1896
- Baeolidia benteva Er. Marcus, 1958
- Baeolidia cryoporos Bouchet, 1977
- Bailya anomalus (Hinds, 1844)
- Bailya intricata (Dall, 1884)
- Bailya parva (C. B. Adams, 1850)
- Bailya weberi (Watters, 1983)
- Balcis alba
- Balcis compacta
- Balcis devians
- Balcis philippi
- Balcis thersites (Carpenter, 1864)
- Balconorbis uvaldensis Hershler and Longley, 1986
- Balwantia soleniformis (Benson, 1836)
- Bankia bipennata (Turton, 1819)
- Bankia carinata (J. E. Gray, 1827)
- Bankia cieba Clench and Turner, 1946
- Bankia destructa Clench and Turner, 1946
- Bankia fimbriatula Moll and Roch, 1931
- Bankia fosteri Clench and Turner, 1946
- Bankia gouldi (Bartsch, 1908)
- Bankia martensi (Stempell, 1899)
- Bankia setacea (Tryon, 1863)
- Bankia sibirica Roch, 1934
- Bankia zeteki Bartsch, 1921
- Baptodoris mimetica Gosliner, 1991
- Barbatia cancellaria (Lamarck, 1819)
- Barbatia candida (Helbling, 1779)
- Barbatia divaricata
- Barbatia domingensis (Lamarck, 1819)
- Barbatia reeveana (d'Orbigny, 1846)
- Barbatia tenera (C. B. Adams, 1845)
- Barleeia acuta
- Barleeia alderi (Carpenter, 1856)
- Barleeia bentleyi Bartsch, 1920
- Barleeia californica Bartsch, 1920
- Barleeia carpenteri Bartsch, 1920
- Barleeia haliotiphila Carpenter, 1864
- Barleeia oldroydi Bartsch, 1920
- Barleeia sanjuanensis Bartsch, 1920
- Barleeia subtenuis Carpenter, 1864
- Barleeia tincta Guppy, 1895
- Barleeia unifasciata
- Barnea candida Linnaeus, 1758
- Barnea parva Pennant, 1777
- Barnea subtruncata (G. B. Sowerby I, 1834)
- Barnea truncata (Say, 1822)
- Bartlettia stefanensis (Moricand, 1856)
- Bartschia agassizi (Clench and Aguayo, 1941)
- Bartschia canetae (Clench and Aguayo, 1944)
- Bartschia fusiformis (Clench and Aguayo, 1941)
- Barynaias caldwellii (Lea, 1858)
- Barynaias opacata (Crosse & Fischer, 1893)
- Barynaias pigerrima (Crosse & Fischer, 1893)
- Barynaias plexus (Conrad, 1838)
- Barynaias sallei (Crosse & Fischer, 1893)
- Basiliomya goreaui Bayer, 1971
- Basilissa alta Watson, 1879
- Basilissa callisto F. M. Bayer, 1971
- Basilissa cinctellum (Dall, 1889)
- Basilissa rhyssa Dall, 1927
- Basilissa watsoni Dall, 1927
- Basterotia corbuloidea Dall, 1899
- Basterotia elliptica (Recluz, 1850)
- Basterotia floridana Dall, 1903
- Basterotia hertleini Durham, 1950
- Basterotia peninsularis (Jordan, 1936)
- Basterotia quadrata (Hanley, 1843)
- Bathothauma lyromma Chun, 1906
- Bathoxiphus ensiculus (Jeffereys, 1877)
- Bathyarca anomala (A. E. Verrill and Bush, 1898)
- Bathyarca frielei (Friele, 1877)
- Bathyarca glacialis (J. E. Gray, 1824)
- Bathyarca glomerula (Dall, 1881)
- Bathyarca grenophia Risso, 1926
- Bathyarca inaequalis (Dall, 1927)
- Bathyarca inaequisculpta (E. A. Smith, 1885)
- Bathyarca orbiculata (Dall, 1881)
- Bathyarca pectunculoides (Scacchi, 1833)
- Bathyarca philippiana (Nyst, 1848)
- Bathyarca raridentata
- Bathybela nudator (Locard, 1897)
- Bathybembix bairdii (Dall, 1889)
- Bathybuccinum clarki Kantor and Harasewych, 1998
- Bathybuccinum ovulum (Dall, 1895)
- Bathypolypus arcticus (Prosch, 1847)
- Bathypolypus faeroensis (Russell, 1909)
- Bathypolypus salebrosus (Sasaki, 1920)
- Bathypolypus sponsalis (Fischer and Fischer, 1892)
- Bathypolypus valdiviae (Thiele in Chun, 1915)
- Bathyteuthis abyssicola Hoyle, 1885
- Bathyteuthis bacidifera Roper, 1968
- Bathyteuthis berryi Roper, 1968
- Bathytoma viabrunnea (Dall, 1889)
- Batillaria attramentaria (G. B. Sowerby II, 1855)
- Batillaria minima (Gmelin, 1791)
- Batillaria zonalis (Bruguiere, 1792)
- Batoteuthis skolops Young and Roper, 1968
- Bellaspira grippi (Dall, 1908)
- Bellaspira pentagonalis (Dall, 1889)
- Belonella belone (Chun, 1906)
- Belonella borealis Nesis, 1972
- Bentharca asperula (Dall, 1881)
- Bentharca nodulosa (O. F. Mueller, 1776)
- Bentharca sagrinata (Dall, 1886)
- Bentheledone albida (Berry, 1917)
- Bentheledone rotunda (Hoyle, 1885)
- Benthobia tryonii Dall, 1889
- Benthoctopus abruptus (Sasaki, 1920)
- Benthoctopus berryi Robson, 1924
- Benthoctopus canthylus Voss and Pearcy, 1990
- Benthoctopus ergasticus (Fischer and Fischer, 1892)
- Benthoctopus eureka (Robson, 1929)
- Benthoctopus fuscus Taki, 1964
- Benthoctopus hokkaidensis (Berry, 1921)
- Benthoctopus januarii (Hoyle, 1885)
- Benthoctopus leioderma (Berry, 1911)
- Benthoctopus levis (Hoyle, 1885)
- Benthoctopus lothei (Chun, 1913)
- Benthoctopus macrophallus Voss and Pearcy, 1990
- Benthoctopus magellanicus Robson, 1930
- Benthoctopus oregonae Toll, 1981
- Benthoctopus oregonensis Voss and Pearcy, 1990
- Benthoctopus piscatorum (Verrill, 1879)
- Benthoctopus profundorum Robson, 1932
- Benthoctopus pseudonymus (Grimpe, 1922)
- Benthoctopus robustus Voss and Pearcy, 1990
- Benthoctopus sibiricus Loyning, 1930
- Benthoctopus thielei Robson, 1932
- Benthoctopus yaquinae Voss and Pearcy, 1990
- Benthomangelia antonia (Dall, 1881)
- Benthomangelia bandella (Dall, 1881)
- Benthomangelia decapitata Bouchet and Waren, 1980
- Benthonella fischeri Dall, 1889
- Benthonella gaza Dall, 1889
- Benthonella nisonis Dall, 1889
- Benthonella tenella (Jeffreys, 1869)
- Benthonellania acuticostata (Dall, 1889)
- Benthonellania colombiana (Romer and Moore, 1988)
- Benthonellania xanthias (Watson, 1886)
- Berghia amakusana (Baba, 1937)
- Berghia benteva (Er. Marcus, 1958)
- Berghia coerulescens (Laurillard, 1830)
- Beringiana beringiana (Middendorff, 1851)
- Beringiana fukuharai San, Hattori & Kondo in Lopes-Lima et al., 2020
- Beringiana gosannensis San, Hattori & Kondo in Lopes-Lima et al., 2020
- Beringiana japonica (Clessin, 1874)
- Beringius aleuticus Dall, 1895
- Beringius behringi (Middendorff, 1848)
- Beringius brychius (Verrill and Smith, 1885)
- Beringius crebricostatus (Dall, 1877)
- Beringius eyerdami A. G. Smith, 1959
- Beringius indentatus Dall, 1919
- Beringius kennicottii (Dall, 1871)
- Beringius stimpsoni (Gould, 1860)
- Beringius turtoni (Bean, 1834)
- Beringius undatus Dall, 1919
- Bermudaclis tampaensis Bartsch, 1947
- Bernardina bakeri Dall, 1910
- Berryteuthis anonychus (Pearcy and Voss, 1963)
- Berryteuthis magister (Berry, 1913)
- Berthelinia caribbea Edmunds, 1963
- Berthella agassizii (MacFarland, 1909)
- Berthella californica (Dall, 1900)
- Berthella plumula (Montagu, 1803)
- Berthella sideralis (Loven, 1847)
- Berthella stellata (Risso, 1826)
- Berthella strongi (MacFarland, 1966)
- Berthella tupala Er. Marcus, 1957
- Berthellina amarillus (Mattox, 1953)
- Berthellina americanus (Verrill, 1885)
- Berthellina engeli (Gardiner, 1936)
- Besla cossmanni Hornung and Mermod, 1924
- Bineurus anodontinum (Rochebrune, 1882)
- Bineurus exilis (Morelet, 1866)
- Bineurus loeiensis Konopleva, Bolotov, Pfeiffer, Vikhrev, Kondakov, Gofarov, Tomilova, Tanmuangpak et al., 2021
- Bineurus mouhotii (Lea, 1863)
- Bineurus panhai Jeratthitikul & Sutcharit, 2023
- Binneya guadalupensis Pilsbry, 1927
- Binneya notabilis J. G. Cooper, 1863
- Biomphalaria glabrata (Say, 1818)
- Biomphalaria havanensis (Pfeiffer, 1839)
- Birgella subglobosus (Say, 1825)
- Biserramenia psammobionta Salvini-Plawen, 1967
- Bithynia tentaculata (Linnaeus, 1758)
- Bittiolum alternatum (Say, 1822)
- Bittiolum fastigiatum (Carpenter, 1864)
- Bittiolum varium (Pfeiffer, 1840)
- Bittium alternatum (Say, 1822)
- Bittium arenaense Hertlein and Strong, 1951
- Bittium armillatum (Carpenter, 1864)
- Bittium asperum Gabb, 1861
- Bittium attenuatum Carpenter, 1864
- Bittium bartolomensis Bartsch, 1917
- Bittium catalinense Bartsch, 1907
- Bittium cerralvoense Bartsch, 1911
- Bittium challisae Bartsch, 1917
- Bittium eschrichtii (Middendorf, 1849)
- Bittium fastigiatum Carpenter, 1864
- Bittium fetellum Bartsch, 1911
- Bittium inornatum Bartsch, 1911
- Bittium interfossum (Carpenter, 1864)
- Bittium johnstonae Bartsch, 1911
- Bittium larum Bartsch, 1911
- Bittium mexicanum Bartsch, 1911
- Bittium munitum (Carpenter, 1864)
- Bittium nicholsi Bartsch, 1911
- Bittium oldroydae Bartsch, 1911
- Bittium paganicum (Dall, 1919)
- Bittium perparvulum
- Bittium quadrifilatum Carpenter, 1864
- Bittium reticulatum Da Costa, 1778
- Bittium sanjuanense Bartsch, 1917
- Bittium santamariensis Bartsch, 1917
- Bittium serra Bartsch, 1917
- Bittium subplanatum Bartsch, 1911
- Bittium tumidum Bartsch, 1907
- Bittium vancouverense Dall and Bartsch, 1910
- Bittium varium (Pfeiffer, 1840)
- Blauneria heteroclita (Montagu, 1808)
- Bolitaena massyae (Robson, 1924)
- Bolitaena microcotyla Steenstrup in Hoyle, 1886
- Boonea bisuturalis (Say, 1822)
- Boonea cincta (Carpenter, 1864)
- Boonea impressa (Say, 1822)
- Boonea seminuda (C. B. Adams, 1839)
- Boreacola dawsoni (Jeffreys, 1864)
- Boreacola vadosus Bernard, 1979
- Boreocingula castanea (Moller, 1842)
- Boreocingula globulus (Moller, 1842)
- Boreocingula katherinae
- Boreocingula martyni (Dall, 1887)
- Boreoscala greenlandica (G. Perry, 1811)
- Boreotrophon abyssorum Verrill, 1885
- Boreotrophon aculeatus
- Boreotrophon alaskanus Dall, 1902
- Boreotrophon albospinosus (Willett, 1931)
- Boreotrophon avalonensis Dall, 1902
- Boreotrophon bentleyi Dall, 1908
- Boreotrophon cepulus (Sowerby, 1880)
- Boreotrophon clathratus (Linnaeus, 1767)
- Boreotrophon coronatus (H. Adams and A. Adams, 1864)
- Boreotrophon disparilis (Dall, 1891)
- Boreotrophon elegantulus (Dall, 1907)
- Boreotrophon eucymatus Dall, 1902
- Boreotrophon kabati J. H. McLean, 1996
- Boreotrophon keepi (Strong and Hertlein, 1937)
- Boreotrophon macouni (Dall, 1910)
- Boreotrophon multicostatus (Eschscholtz, 1829)
- Boreotrophon orpheus (Gould, 1849)
- Boreotrophon pedroanus (Arnold, 1903)
- Boreotrophon raymondi (Moody, 1916)
- Boreotrophon rotundatus (Dall, 1902)
- Boreotrophon staphylinus (Dall, 1919)
- Boreotrophon stuarti (E. A. Smith, 1880)
- Boreotrophon triangulatus (Carpenter, 1864)
- Boreotrophon tripherus Dall, 1902
- Boreotrophon truncatus (Strom, 1768)
- Boreotrophon verrilli Bush, 1893
- Bornella calcarata
- Bornia longipes (Stimpson, 1855)
- Bornia sebetia Costa, 1829
- Borsonella bartschi (Arnold, 1903)
- Borsonella civitella Dall, 1919
- Borsonella coronadoi (Dall, 1908)
- Borsonella diegensis (Dall, 1908)
- Borsonella hooveri (Arnold, 1903)
- Borsonella merriami (Arnold, 1903)
- Borsonella nicoli Dall, 1919
- Borsonella nychia Dall, 1919
- Borsonella omphale Dall, 1919
- Borsonella pinosensis Bartsch, 1944
- Bosellia corinneae Ev. Marcus, 1973
- Bosellia marcusi Ev. Marcus, 1972
- Bosellia mimetica Trinchese, 1891
- Bostrychocentrum metcalfi F. G. Thompson, 1974
- Bothriopupa variolosa (Gould, 1848)
- Botula fusca (Gmelin, 1791)
- Brachidontes adamsianus (Dunker, 1857)
- Brachidontes domingensis (Lamarck, 1819)
- Brachidontes exustus (Linnaeus, 1758)
- Brachidontes modiolus (Linnaeus, 1767)
- Brachidontes multiformes (Carpenter, 1855)
- Brachioteuthis beanii Verrill, 1881 in 1880-1881
- Brachioteuthis behnii (Steenstrup, 1882)
- Brachioteuthis bowmani Russell, 1909
- Brachioteuthis picta Chun, 1910
- Brachioteuthis riisei (Steenstrup, 1882)
- Brachycythara barbarae Lyons, 1972
- Brachycythara biconica (C. B. Adams, 1850)
- Bractechlamys antillarum (Recluz, 1853)
- Bradybaena similaris (Ferussac, 1821)
- Branchyostomia albella
- Branchyostomia scalaris
- Brazzaea anceyi Bourguignat, 1886
- Brevinucula verrilli (Dall, 1886)
- Brookula bohni Schwabe and Engl, 2008
- Brookula charleenae Schwabe and Engl, 2008
- Brookula exquisita Clarke, 1961
- Brookula iki Kay, 1979
- Brookula pfefferi Powell, 1951
- Buccinum abyssorum A. E. Verrill, 1884
- Buccinum aleuticum Dall, 1895
- Buccinum amaliae Verkruzen, 1878
- Buccinum angulosum J. E. Gray, 1839
- Buccinum aniwanum
- Buccinum baerii (Middendorff, 1848)
- Buccinum belcheri Reeve, 1855
- Buccinum bulimuloideum Dall, 1907
- Buccinum chartium Dall, 1919
- Buccinum chishimananux
- Buccinum chishimanum Pilsbry, 1904
- Buccinum ciliatum Fabricius, 1780
- Buccinum cnismatum Dall, 1907
- Buccinum cyaneum Bruguiere, 1792
- Buccinum diplodetum Dall, 1907
- Buccinum eugrammatum Dall, 1907
- Buccinum fringillum Dall, 1877
- Buccinum glaciale Linnaeus, 1761
- Buccinum gouldii A. E. Verrill, 1882
- Buccinum hertzensteini Verkruzen, 1882
- Buccinum humphreysiana Bennett, 1825
- Buccinum hydrophanum Hancock, 1846
- Buccinum inexhaustum Verkruzen, 1878
- Buccinum kadiakense Dall, 1907
- Buccinum micropoma Thorson, 1944
- Buccinum midori
- Buccinum moerchi Friele, 1877
- Buccinum nivale Friele, 1882
- Buccinum normale Dall, 1885
- Buccinum ochotense (Middendorff, 1848)
- Buccinum oedematum Dall, 1907
- Buccinum orotundum Dall, 1907
- Buccinum pemphigus Dall, 1907
- Buccinum percrassum Dall, 1883
- Buccinum physematum Dall, 1919
- Buccinum picturatum Dall, 1877
- Buccinum planeticum Dall, 1919
- Buccinum plectrum Stimpson, 1865
- Buccinum polaris J. E. Gray, 1839
- Buccinum rondinum Dall, 1919
- Buccinum rossellinum Dall, 1919
- Buccinum rossicum
- Buccinum sandersoni Verrill, 1882
- Buccinum scalariforme Moller, 1842
- Buccinum sericatum Hancock, 1846
- Buccinum sigmatopleura Dall, 1907
- Buccinum simulatum Dall, 1907
- Buccinum solenum Dall, 1919
- Buccinum striatissimum G. B. Sowerby III, 1899
- Buccinum strigillatum Dall, 1891
- Buccinum tanguaryi Baker, 1919
- Buccinum taphrium
- Buccinum tenebrosum Hancock, 1846
- Buccinum tenellum Dall, 1883
- Buccinum totteni Stimpson, 1865
- Buccinum tsubai
- Buccinum tumidulum G. O. Sars, 1878
- Buccinum undatum Linnaeus, 1758
- Buccinum viridum Dall, 1889
- Bufonaria bufo (Bruguiere, 1792)
- Bulbus fragilis (Leach, 1819)
- Bulbus smithii (Brown, 1839)
- Buldowskia flavotincta (Martens, 1905)
- Buldowskia iwakawai (Suzuki, 1939)
- Buldowskia kamiyai San, Hattori & Kondo in Lopes-Lima et al., 2020
- Buldowskia shadini (Moskvicheva, 1973)
- Buldowskia suifunica (Lindholm, 1925)
- Bulimnaea megasoma (Say, 1824)
- Bulimulus guadalupensis (Bruguiere, 1789)
- Bulla abyssicola Dall, 1881
- Bulla ampulla (Linnaeus, 1758)
- Bulla bermudae Verrill and Bush, 1900
- Bulla clausa Dall, 1889
- Bulla eburnea Dall, 1881
- Bulla gemma (A. E. Verrill, 1880)
- Bulla gouldiana Pilsbry, 1895
- Bulla punctulata A. Adams In Sowerby, 1850
- Bulla solida Gmelin, 1791
- Bulla striata Bruguiere, 1792
- Bullina exquisita McGinty, 1955
- Bullina torrei Aguayo and Rehder, 1936
- Bursa bufo (Bruguiere, 1792)
- Bursa bufonia (Gmelin, 1791)
- Bursa calcipicta Dall, 1908
- Bursa californica (Hinds, 1843)
- Bursa corrugata Perry, 1811
- Bursa finlayi Mcginty, 1962
- Bursa granularis Roding, 1798
- Bursa grayana Dunker, 1862
- Bursa ranelloides (Reeve, 1844)
- Bursa rhodostoma (G. B. Sowerby I or II, 1835)
- Bursa tenuisculpta (Dautzenberg and Fischer, 1906)
- Bursa thomae (Orbigny, 1842)
- Bursatella kachii
- Bursatella leachii de Blainville, 1817
- Bushia elegans (Dall, 1886)
- Busycon candelabrum (Lamarck, 1816)
- Busycon carica (Gmelin, 1791)
- Busycon coarctatum (Sowerby, 1825)
- Busycon contrarium (Conrad, 1840)
- Busycon laeostomum Kent, 1982
- Busycon lyonsi Petuch, 1987
- Busycon perversum (Linnaeus, 1758)
- Busycon pulleyi Hollister, 1958
- Busycon sinistrum Hollister, 1958
- Busycotypus canaliculatus (Linnaeus, 1758)
- Busycotypus plagosus (Conrad, 1862)
- Busycotypus spiratus (Lamarck, 1816)
- Cabestana spengleri Perry, 1811
- Cadlina evelinae
- Cadlina flavomaculata MacFarland, 1905
- Cadlina glabra Friele and Hansen, 1876
- Cadlina laevis (Linnaeus, 1767)
- Cadlina limbaughi Lance, 1962
- Cadlina limbaughorum Lance, 1962
- Cadlina luteomarginata MacFarland, 1966
- Cadlina marginata MacFarland, 1905
- Cadlina modesta MacFarland, 1966
- Cadlina pacifica Bergh, 1879
- Cadlina rumia Er. Marcus, 1955
- Cadlina scabriuscula (Bergh, 1890)
- Cadlina sparsa (Odhner, 1921)
- Cadulus aberrans Whiteaves, 1887
- Cadulus acus Dall, 1889
- Cadulus aequalis Dall, 1881
- Cadulus agassizii Dall, 1881
- Cadulus albicomatus Dall, 1890
- Cadulus amiantus Dall, 1889
- Cadulus ampullaceus Watson, 1879
- Cadulus arctus Henderson, 1920
- Cadulus artatus Locard, 1897
- Cadulus atlanticus Henderson, 1920
- Cadulus austinclarki Emerson, 1951
- Cadulus californicus (Pilsbry and Sharp, 1898)
- Cadulus carolinensis Bush, 1885
- Cadulus cucurbitus Dall, 1881
- Cadulus cylindratus Jeffereys, 1877
- Cadulus elongatus J. B. Henderson, 1920
- Cadulus exiguus Watson, 1879
- Cadulus foweyensis Henderson, 1920
- Cadulus fusiformis Pilsbry and Sharp, 1898
- Cadulus grandis A. E. Verrill, 1884
- Cadulus greenlawi Dall, 1889
- Cadulus hepburni (Dall, 1897)
- Cadulus iota Henderson, 1920
- Cadulus mayori (J. B. Henderson, 1920)
- Cadulus miamiensis J. B. Henderson, 1920
- Cadulus minusculus Dall, 1889
- Cadulus obesus Watson, 1879
- Cadulus pandionis (A. E. Verrill and S. Smith, 1880)
- Cadulus parvus J. B. Henderson, 1920
- Cadulus perpusillus (Sowerby, 1832)
- Cadulus platensis Henderson, 1920
- Cadulus proculum Dall, 1889
- Cadulus providensis Henderson, 1920
- Cadulus quadridentatus Dall, 1881
- Cadulus quadrifissatus (Pilsbry and Sharp, 1898)
- Cadulus rastridens Watson, 1879
- Cadulus regularis Henderson, 1920
- Cadulus rushii Pilsbry and Sharp, 1898
- Cadulus spectabilis A. E. Verrill, 1885
- Cadulus stearnsii (Pilsbry and Sharp, 1898)
- Cadulus striatus Pilsbry and Sharp, 1898
- Cadulus tetraschistus (Watson, 1879)
- Cadulus tetrodon Pilsbry and Sharp, 1898
- Cadulus tolmiei (Dall, 1897)
- Cadulus transitorius (J. B. Henderson, 1920)
- Cadulus tumidosus Jeffreys, 1877
- Cadulus verrilli Henderson, 1920
- Cadulus watsoni Dall, 1881
- Caecum antillarum Carpenter, 1858
- Caecum arcuatum
- Caecum bakeri (Bartsch, 1920)
- Caecum bipartitum de Folin, 1870
- Caecum breve de Folin, 1867
- Caecum californicum Dall, 1885
- Caecum carolinianum Dall, 1892
- Caecum carpenteri (Bartsch, 1920)
- Caecum clava de Folin, 1867
- Caecum condylum Moore, 1969
- Caecum cooperi S. Smith, 1860
- Caecum cornucopiae (Carpenter, 1858)
- Caecum crebricinctum Carpenter, 1864
- Caecum cubitatum (de Folin, 1868)
- Caecum cycloferum de Folin, 1867
- Caecum dalli Bartsch, 1920
- Caecum floridanum Stimpson, 1851
- Caecum glabrum Montagu, 1803
- Caecum gurgulio Carpenter, 1858
- Caecum heladum Olsson and Harbison, 1953
- Caecum hemphilli Bartsch, 1920
- Caecum heptagonum (Bartsch, 1920)
- Caecum imbricatum Carpenter, 1858
- Caecum imperforatum Kanamacher, 1798
- Caecum insularum Moore, 1969
- Caecum johnsoni Winkley, 1908
- Caecum liratocinctum Carpenter, 1857
- Caecum nitidum Stimpson, 1851
- Caecum oahuense
- Caecum occidentale (Bartsch, 1920)
- Caecum orcutti (Dall, 1885)
- Caecum plicatum Carpenter, 1858
- Caecum profundicolum Bartsch, 1920
- Caecum pulchellum Stimpson, 1851
- Caecum regulare Carpenter, 1858
- Caecum rosanum Bartsch, 1920
- Caecum ryssotitum de Folin, 1867
- Caecum sepimentum
- Caecum strigosum de Folin, 1868
- Caecum subvolutum de Folin, 1874
- Caecum textile de Folin, 1867
- Caecum tornatum Verrill And Bush, 1900
- Caecum tortile Dall, 1892
- Caecum vestitum de Folin, 1868
- Caelatura rustica (Watson, 1886)
- Cahuillus greggi (W. B. Miller, 1981)
- Cahuillus indioensis (Yates, 1890)
- Calinaticina oldroydii (Dall, 1897)
- Caliphylla mediterranea (A. Costa, 1867)
- Calliodentalium callipeplum (Dall, 1889)
- Calliostoma adelae Schwengel, 1951
- Calliostoma adspersum (Philippi, 1851)
- Calliostoma anitoni Koch, 1843
- Calliostoma annulatum (Lightfoot, 1786)
- Calliostoma arestum Dall, 1927
- Calliostoma atlantis Clench and Aguayo, 1940
- Calliostoma aurora Dall, 1888
- Calliostoma bairdii A. E. Verrill and S. Smith, 1880
- Calliostoma barbouri Clench and Aguayo, 1946
- Calliostoma benedicti Dall, 1889
- Calliostoma bernardi J. H. McLean, 1984
- Calliostoma bigelowi Clench and Aguayo, 1938
- Calliostoma blakei Clench and Aguayo, 1938
- Calliostoma brunneum (Dall, 1881)
- Calliostoma bullisi Clench and Turner, 1960
- Calliostoma canaliculatum (Lightfoot, 1786)
- Calliostoma carcellesi Clench and Aguayo, 1940
- Calliostoma circumcinctum Dall, 1880
- Calliostoma conulus (Linnaeus, 1758)
- Calliostoma coppingeri (E. A. Smith, 1880)
- Calliostoma costatum Martyn
- Calliostoma cubanum Clench and Aguayo, 1940
- Calliostoma dentatum Quinn, 1992
- Calliostoma echinatum Dall, 1881
- Calliostoma euglyptum (A. Adams, 1855)
- Calliostoma eximium (Reeve, 1843)
- Calliostoma fascinans Schwengel and McGinty, 1942
- Calliostoma formosum (Mcandrews and Forbes, 1847)
- Calliostoma gemmulatum Carpenter, 1864
- Calliostoma gloriosum Dall, 1871
- Calliostoma gordanum J. H. McLean, 1970
- Calliostoma granulatum (Born, 1778)
- Calliostoma halibrectum Dall, 1927
- Calliostoma hassler Clench and Aguayo, 1939
- Calliostoma hendersoni Dall, 1927
- Calliostoma indiana Dall, 1889
- Calliostoma javanicum (Lamarck, 1822)
- Calliostoma jeanneae Clench and Turner, 1960
- Calliostoma jucundum (Gould, 1894)
- Calliostoma jujubinum (Gmelin, 1791)
- Calliostoma kampsa Dall, 1927
- Calliostoma keenae J. H. McLean, 1970
- Calliostoma leanum (C. B. Adams, 1852)
- Calliostoma ligatum (Gould, 1849)
- Calliostoma marionae Dall, 1906
- Calliostoma marshalli Lowe, 1935
- Calliostoma mcleani Shasky and Campbell, 1964
- Calliostoma militare Von Ihering, 1907
- Calliostoma nepheloide Dall, 1913
- Calliostoma occidentale (Mighels and C. B. Adams, 1842)
- Calliostoma orion Dall, 1889
- Calliostoma palmeri Dall, 1871
- Calliostoma papillosum
- Calliostoma platinum Dall, 1890
- Calliostoma psyche Dall, 1889
- Calliostoma pulchrum (C. B. Adams, 1850)
- Calliostoma rioensis Dall, 1890
- Calliostoma roseolum Dall, 1881
- Calliostoma sanjaimense J. H. McLean, 1970
- Calliostoma sapidum Dall, 1881
- Calliostoma sarcodum Dall, 1927
- Calliostoma sayanum Dall, 1889
- Calliostoma scalenum Quinn, 1992
- Calliostoma schroederi Clench and Aguayo, 1938
- Calliostoma splendens Carpenter, 1864
- Calliostoma springeri Clench and Turner, 1960
- Calliostoma supragranosum Carpenter, 1864
- Calliostoma tampaense (Conrad, 1846)
- Calliostoma tittarium Dall, 1927
- Calliostoma torrei Clench and Aguayo, 1940
- Calliostoma trachystum Dall, 1927
- Calliostoma tricolor Gabb, 1865
- Calliostoma turbinum Dall, 1896
- Calliostoma variegatum Carpenter, 1864
- Calliostoma yucatecanum Dall, 1881
- Calliostoma zizyphinum (Linnaeus, 1758)
- Calliostoma zonamestrum A. Adams, 1851
- Calliotropis carlotta (Dall, 1889)
- Calliotropis ottoi (Philippi, 1844)
- Calliotropis regalis (A. E. Verrill and S. Smith, 1880)
- Calliotropis regulata
- Callista chione (Linnaeus, 1758)
- Callista eucymata (Dall, 1890)
- Callistochiton asthenes (S. S. Berry, 1919)
- Callistochiton crassicostatus
- Callistochiton decoratus Keep, 1887
- Callistochiton palmulatus Dall, 1879
- Callistochiton portobelensis Ferreira, 1976
- Callistochiton shuttleworthianus Pilsbry, 1893
- Callochiton laevis
- Callochiton septemvalvis (Montagu, 1803)
- Callonaia duprei (Récluz, 1842)
- Calloplax janeirensis (Gray, 1828)
- Callumbonella gorgonarum (Fischer, 1883)
- Callumbonella suturale (Philippi, 1836)
- Calma glaucoides
- Calotrophon andrewsi Vokes, 1976
- Calotrophon incompta (S. S. Berry, 1960)
- Calotrophon ostrearum (Conrad, 1846)
- Calotrophon philippiana (Dall, 1889)
- Calycidoris guentheri Abraham, 1876
- Calyptoconcha pellucida (A. E. Verrill, 1880)
- Calyptogena pacifica Dall, 1891
- Calyptraea burchi A. G. Smith and M. Gordon, 1948
- Calyptraea centralis (Conrad, 1841)
- Calyptraea chinensis Linnaeus, 1758
- Calyptraea contorta
- Calyptraea fastigiata Gould, 1846
- Cambarunio dactylus (Lea, 1840)
- Cambarunio hesperus Watters, 2018
- Cambarunio iris (Lea, 1829)
- Cambarunio jonesii (Lea, 1859)
- Cambarunio nebulosus (Conrad, 1834)
- Cambarunio simus (Lea, 1838)
- Cambarunio taeniatus (Conrad, 1834)
- Campeloma brevispirum F. C. Baker, 1928
- Campeloma crassulum Rafinesque, 1819
- Campeloma decampi (W. G. Binney, 1865)
- Campeloma decisum (Say, 1817)
- Campeloma floridense Call, 1886
- Campeloma geniculum (Conrad, 1834)
- Campeloma limum (Anthony, 1860)
- Campeloma milesi (Lea, 1863)
- Campeloma parthenum Vail, 1979
- Campeloma regulare (Lea, 1841)
- Campeloma rufum (Haldeman, 1841)
- Cancellaria adelae Pilsbry, 1940
- Cancellaria cooperii Gabb, 1865
- Cancellaria crawfordiana Dall, 1891
- Cancellaria reticulata (Linnaeus, 1767)
- Cancellaria richardpetiti Petuch, 1987
- Candidula intersecta (Poiret, 1801)
- Cantharidus exasperatus
- Cantharidus striatus
- Cantharus cancellarius (Conrad, 1846)
- Cantharus massena (Risso, 1826)
- Cantharus multangulus (Philippi, 1848)
- Capulacmaea commoda (Middendorff, 1851)
- Capulus californicus Dall, 1900
- Capulus incurvus (Gmelin, 1791)
- Capulus ungaricus (Linnaeus, 1767)
- Caracolus marginella (Gmelin, 1791)
- Cardiapoda placenta (Lesson, 1830)
- Cardiomya abyssicola (Verrill and Bush, 1898)
- Cardiomya balboae (Dall, 1916)
- Cardiomya behringensis (Leche, 1883)
- Cardiomya californica (Dall, 1886)
- Cardiomya costata (Sowerby, 1834)
- Cardiomya costellata (Deshayes, 1830)
- Cardiomya gemma A. E. Verrill and Bush, 1898
- Cardiomya glypta (Bush, 1885)
- Cardiomya isolirata Bernard, 1969
- Cardiomya multicostata Verrill and Smith, 1898
- Cardiomya oldroydi (Dall, 1924)
- Cardiomya ornatissima (d'Orbigny, 1842)
- Cardiomya pectinata (Carpenter, 1864)
- Cardiomya perrostrata (Dall, 1881)
- Cardiomya planetica (Dall, 1908)
- Cardiomya pseutes
- Cardiomya striata (Jeffreys, 1876)
- Cardita borealis
- Cardita ventricosa
- Carditamera floridana Conrad, 1838
- Carditamera gracilis (Shuttleworth, 1856)
- Carditella hawarensis
- Carditopsis bernardi (Dall, 1903)
- Carditopsis smithii (Dall, 1896)
- Cardium echinatum
- Cardium exiguum
- Cardium ovale
- Cardium pavcicostatum
- Cardium scabrum
- Careliopsis styliformis (Morch, 1875)
- Carenzia carinata (Jeffreys, 1877)
- Caribachlamys imbricata (Gmelin, 1791)
- Caribachlamys mildredae (Bayer, 1941)
- Caribachlamys ornata (Lamarck, 1819)
- Caribachlamys sentis (Reeve, 1853)
- Carinacauda stormi Leonard, Chichester, Richart and Young, 2011
- Carinapex minutissima
- Carinapex papillosa
- Carinaria cithara Benson, 1835
- Carinaria cristata (Linnaeus, 1767)
- Carinaria galea Benson, 1835
- Carinaria japonica
- Carinaria lamarcki Peron and Lesueur, 1810
- Carinoturris adrastia (Dall, 1919)
- Carinoturris fortis Bartsch, 1944
- Carinoturris polycaste (Dall, 1919)
- Carychium clappi Hubricht, 1959
- Carychium exiguum (Say, 1822)
- Carychium exile Lea, 1842
- Carychium mexicanum Pilsbry, 1891
- Carychium minimum Muller, 1774
- Carychium nannodes G. H. Clapp, 1905
- Carychium occidentale Pilsbry, 1891
- Carychium riparium Hubricht, 1978
- Carychium stygium Call, 1897
- Carychium tridentatum (Risso, 1826)
- Caryocorbula porcella (Dall, 1916)
- Casmaria ponderosa (Gmelin, 1791)
- Cassis cornuta Linnaeus, 1758
- Cassis flammea (Linnaeus, 1758)
- Cassis madagascariensis Lamarck, 1822
- Cassis tuberosa (Linnaeus, 1758)
- Castalia ambigua Lamarck, 1819
- Castalia cordata Swainson, 1840
- Castalia crosseana Hidalgo, 1865
- Castalia ecarinata Mousson, 1869
- Castalia inflata d'Orbigny, 1835
- Castalia martensi (Ihering, 1891)
- Castalia multisulcata Hupé, 1857
- Castalia nehringi (Ihering, 1891)
- Castalia orbignyi (Deville & Hupé, 1850)
- Castalia orinocensis Morrison, 1943
- Castalia psammoica (d'Orbigny, 1835)
- Castalia stevensi (H.B. Baker, 1930)
- Castalia undosa Martens, 1885
- Castaliella quadrata (Sowerby, 1869)
- Castaliella schombergiana (Sowerby, 1869)
- Castaliella sulcata (Krauss, 1849)
- Catinella aprica Hubricht, 1968
- Catinella avara (Say, 1824)
- Catinella gabbii (Tryon, 1866)
- Catinella hubrichti Grimm, 1960
- Catinella oklahomarum (Webb, 1953)
- Catinella parallela Franzen, 1979
- Catinella pinicola Grimm, 1960
- Catinella protracta Franzen, 1983
- Catinella pugilator Hubricht, 1961
- Catinella rehderi (Pilsbry, 1948)
- Catinella stretchiana (Bland, 1865)
- Catinella texana Hubricht, 1961
- Catinella vagans (Pilsbry, 1900)
- Catinella vermeta (Say, 1829)
- Catinella waccamawensis Franzen, 1981
- Catinella wandae (Webb, 1953)
- Catriona aurantia (Alder and Hancock, 1842)
- Catriona columbiana (O'Donoghue, 1922)
- Catriona gymnota (Couthouy, 1838)
- Catriona maua Ev. Marcus and Er. Marcus, 1960
- Catriona oba Ev. Marcus, 1970
- Catriona rickettsi Behrens, 1984
- Caudiculatus caudiculatus (Martens, 1867)
- Cavolinia gibbosa (d'Orbigny, 1836)
- Cavolinia globosa Nomen Nudum
- Cavolinia inflexa (Lesueur, 1813)
- Cavolinia longirostratus (de Blainville, 1821)
- Cavolinia longirostris (Blainville, 1821)
- Cavolinia occidentalis
- Cavolinia quadridentata
- Cavolinia tridentata (Niebuhr, 1775)
- Cavolinia uncinata (Rang, 1829)
- Cecilioides acicula (Muller, 1774)
- Cecilioides aperta (Swainson, 1840)
- Cecilioides apertus (Swainson, 1840)
- Cecina manchurica A. Adams, 1861
- Cellana sandwicensis (Pease, 1861)
- Cellana talcosa (Gould, 1846)
- Cenchritis muricatus (Linnaeus, 1758)
- Cepaea hortensis (Muller, 1774)
- Cepaea nemoralis (Linnaeus, 1758)
- Cephalobranchia bonnevii Massy, 1917
- Cephalobranchia macrochaeta Bonnevie, 1913
- Cerastoderma edule (Linnaeus, 1758)
- Cerastoderma elegantulum Beck, 1842
- Cerastoderma glaucum (Poiret, 1789)
- Cerastoderma lamarcki
- Cerastoderma pinnulatum (Conrad, 1831)
- Ceratophyllidia papilligera (Bergh, 1890)
- Ceratostoma foliatum (Gmelin, 1791)
- Ceratostoma nuttalli (Conrad, 1837)
- Ceratozona squalida (C. B. Adams, 1845)
- Cerberilla bernadetti Tardy, 1965
- Cerberilla mosslandica McDonald and Nybakken, 1975
- Cerberilla tanna Ev. Marcus and Er. Marcus, 1960
- Cerion casablancae Bartsch, 1920
- Cerion chrysalis (Ferussac in Beck, 1837)
- Cerion incanum (A. Binney, 1851)
- Cerion sculptum (Poey, 1858)
- Cerion tridentatum Pilsbry and Vanatta, 1895
- Cerion viaregis Bartsch, 1920
- Cerithidea californica (Haldeman, 1840)
- Cerithidea costata (E. M. da Costa, 1778)
- Cerithidea decollata Linnaeus, 1758
- Cerithidea fuscata Gould, 1857
- Cerithidea montagnei (Orbigny, 1837)
- Cerithidea pliculosa (Menke, 1829)
- Cerithidea scalariformis (Say, 1825)
- Cerithidea valida (C. B. Adams, 1852)
- Cerithidium diplax
- Cerithidium perparuulum
- Cerithiella metula (Loven, 1846)
- Cerithiella producta Dall, 1927
- Cerithiella whiteavesi Verrill, 1880
- Cerithiopsida diegensis (Bartsch, 1911)
- Cerithiopsida rowelli (Bartsch, 1911)
- Cerithiopsidella alcima (Bartsch, 1911)
- Cerithiopsidella antefilosa (Bartsch, 1911)
- Cerithiopsidella cosmia (Bartsch, 1907)
- Cerithiopsina signa (Bartsch, 1921)
- Cerithiopsis abruptum Watson, 1880
- Cerithiopsis albovittata (C. B. Adams, 1850)
- Cerithiopsis alcima Bartsch, 1911
- Cerithiopsis althea (Dall, 1927)
- Cerithiopsis antefilosum Bartsch, 1911
- Cerithiopsis antemunda Bartsch, 1911
- Cerithiopsis apicinum (Dall, 1927)
- Cerithiopsis ara Dall and Bartsch, 1911
- Cerithiopsis argenteum (Dall, 1927)
- Cerithiopsis arnoldi Bartsch, 1911
- Cerithiopsis aurea Bartsch, 1911
- Cerithiopsis bakeri Bartsch, 1917
- Cerithiopsis benthicum (Dall, 1927)
- Cerithiopsis berryi Bartsch, 1911
- Cerithiopsis bicolor (C. B. Adams, 1850)
- Cerithiopsis bristolae Baker, Hanna, and Strong, 1938
- Cerithiopsis carpenteri Bartsch, 1911
- Cerithiopsis cesta Bartsch, 1911
- Cerithiopsis charlottensis Bartsch, 1917
- Cerithiopsis columna Carpenter, 1864
- Cerithiopsis cosmia Bartsch, 1907
- Cerithiopsis costulatum Moller, 1842
- Cerithiopsis crystallinum Dall, 1881
- Cerithiopsis cynthia Bartsch, 1911
- Cerithiopsis decorum (Dall, 1927)
- Cerithiopsis diegensis Bartsch, 1911
- Cerithiopsis diomedeae Bartsch, 1911
- Cerithiopsis docata (Dall, 1927)
- Cerithiopsis elima (Dall, 1927)
- Cerithiopsis eliza (Dall, 1927)
- Cerithiopsis elsa (Dall, 1927)
- Cerithiopsis emersonii (C. B. Adams, 1839)
- Cerithiopsis exile
- Cerithiopsis flava (C. B. Adams, 1850)
- Cerithiopsis fraseri Bartsch, 1921
- Cerithiopsis fusiformis (C. B. Adams, 1850)
- Cerithiopsis gemmulosa (C. B. Adams, 1847)
- Cerithiopsis georgianum (Dall, 1927)
- Cerithiopsis gloriosa Bartsch, 1911
- Cerithiopsis greenii (C. B. Adams, 1839)
- Cerithiopsis grippi Bartsch, 1917
- Cerithiopsis halia Bartsch, 1911
- Cerithiopsis hero Bartsch, 1911
- Cerithiopsis honora (Dall, 1927)
- Cerithiopsis ingens (Bartsch, 1907)
- Cerithiopsis io Dall and Bartsch, 1911
- Cerithiopsis iontha Bartsch, 1911
- Cerithiopsis iota (C. B. Adams, 1845)
- Cerithiopsis jeffreysi Watson, 1885
- Cerithiopsis kinoi Baker, Hanna, and Strong, 1938
- Cerithiopsis lata (C. B. Adams, 1850)
- Cerithiopsis latum (C. B. Adams, 1850)
- Cerithiopsis leipha (Dall, 1927)
- Cerithiopsis martensii Dall, 1881
- Cerithiopsis merida (Dall, 1927)
- Cerithiopsis metaxae Della Chiaje, 1829
- Cerithiopsis montereyensis Bartsch, 1911
- Cerithiopsis movilla Dall and Bartsch, 1911
- Cerithiopsis onealensis Bartsch, 1921
- Cerithiopsis oxys Bartsch, 1911
- Cerithiopsis paramoea Bartsch, 1911
- Cerithiopsis pedroana Bartsch, 1907
- Cerithiopsis pesa Dall and Bartsch, 1911
- Cerithiopsis petala (Dall, 1927)
- Cerithiopsis porteri Baker, Hanna, and Strong. 1938
- Cerithiopsis pulchellum Jeffreys, 1858
- Cerithiopsis pupa Dall and Stimpson, 1901
- Cerithiopsis rowelli Bartsch, 1911
- Cerithiopsis rugulosum (C. B. Adams, 1850)
- Cerithiopsis serina (Dall, 1927)
- Cerithiopsis signa Bartsch, 1911
- Cerithiopsis sigsbeanum Dall, 1881
- Cerithiopsis stejnegeri Dall, 1884
- Cerithiopsis stephensae Bartsch, 1909
- Cerithiopsis subgloriosa Baker, Hanna, and Strong, 1938
- Cerithiopsis subulata (Montagu, 1808)
- Cerithiopsis truncatum Dall, 1886
- Cerithiopsis tubercularis Montagu, 1803
- Cerithiopsis tuberculatus Montagu, 1803
- Cerithiopsis tumida (Bartsch, 1907)
- Cerithiopsis vanhyningi Bartsch, 1918
- Cerithiopsis vicola Dall and Bartsch, 1911
- Cerithiopsis virginica J. B. Henderson and Bartsch, 1914
- Cerithiopsis vitreum (Dall, 1927)
- Cerithium atratum (Born, 1778)
- Cerithium caribbaeum M. Smith, 1946
- Cerithium chara Pilsbry, 1949
- Cerithium eburneum Bruguiere, 1792
- Cerithium gemmatum Hinds, 1844
- Cerithium guinaicum Philippi, 1849
- Cerithium interstriatum
- Cerithium lindae Petuch, 1987
- Cerithium litteratum (Born, 1778)
- Cerithium lutosum Menke, 1828
- Cerithium lymani Pilsbry, 1949
- Cerithium maculosum Kiener, 1841
- Cerithium menkei Carpenter, 1857
- Cerithium moenensis Gabb, 1881
- Cerithium muscarum Say, 1822
- Cerithium mutabile Lamarck, 1804
- Cerithium stercusmuscarum Valenciennes, 1833
- Cerithium uncinatum Gmelin, 1791
- Cerithium variabile Deshayes, 1833
- Cerithium versicolor Philippi, 1848
- Ceritoturris bittium
- Cernuella virgata (Muller, 1774)
- Cerodrillia abdera (Dall, 1919)
- Cerodrillia bahamensis Bartsch, 1943
- Cerodrillia bealiana Schwengel and McGinty, 1942
- Cerodrillia cervina Bartsch, 1943
- Cerodrillia clappa Bartsch and Rehder, 1939
- Cerodrillia clappi Bartsch and Rehder, 1939
- Cerodrillia cybele (Pilsbry and Lowe, 1932)
- Cerodrillia girardi Lyons, 1972
- Cerodrillia hendersoni Bartsch, 1943
- Cerodrillia perryae Bartsch and Rehder, 1939
- Cerodrillia thea (Dall, 1884)
- Cerodrillia verrillii (Dall, 1881)
- Cerodrillia williami Bartsch, 1943
- Cetoconcha atypha Verrill and Bush, 1898
- Cetoconcha bulla (Dall, 1881)
- Cetoconcha malespinae Ridewood, 1903
- Cetoconcha margarita (Dall, 1886)
- Cetoconcha smithii Dall, 1908
- Chaceia ovoidea (Gould, 1851)
- Chaenaxis tuba (Pilsbry and Ferriss, 1906)
- Chaetoderma argenteum Heath, 1911
- Chaetoderma bacillum
- Chaetoderma canadense Nierstrasz, 1902
- Chaetoderma elegans Scheltema, 1997
- Chaetoderma hancocki (Schwabl, 1963)
- Chaetoderma lucidum
- Chaetoderma marinelli (Schwabl, 1963)
- Chaetoderma nanulum Heath, 1911
- Chaetoderma nitidulum Loven, 1844
- Chaetoderma pacificum (Schwabl, 1963)
- Chaetoderma productum Wiren, 1892
- Chaetoderma robustum Heath, 1911
- Chaetoderma scabrum Heath, 1911
- Chaetoderma squamosum Heath, 1918
- Chaetoderma vadorum Heath, 1918
- Chaetopleura apiculata (Say, 1834)
- Chaetopleura beanii (Carpenter, 1857)
- Chaetopleura gemma Dall, 1879
- Chaetopleura janeirensis (J. E. Gray, 1828)
- Chaetopleura lanuginosa (Dall, 1879)
- Chaetopleura scabricula (Sowerby, 1832)
- Chaetopleura staphylophera Lyons, 1985
- Chama arcana Bernard, 1976
- Chama congregata Conrad, 1833
- Chama echinata Broderip, 1835
- Chama florida Lamarck, 1819
- Chama frondosa Broderip, 1835
- Chama lactuca Dall, 1886
- Chama macerophylla Gmelin, 1791
- Chama pellucida Broderip, 1835
- Chama sarda Reeve, 1847
- Chama sinuosa Broderip, 1835
- Chama sordida Broderip, 1835
- Chama venosa Reeve, 1837
- Chamaearionta aquaealbae (S. S. Berry, 1922)
- Chambardia bourguignati (Bourguignat, 1885)
- Chambardia flava (Pilsbry & Bequaert, 1927)
- Chambardia letourneuxi Bourguignat in Servain, 1890
- Chambardia moutai (Dartevelle, 1939)
- Chambardia nyassaensis (Lea, 1864)
- Chambardia petersi (Martens, 1860)
- Chambardia rubens (Lamarck, 1819)
- Chambardia trapezia (Martens, 1897)
- Chambardia wahlbergi (Krauss, 1848)
- Chambardia welwitschii (Morelet, 1868)
- Chambardia wissmanni (Martens, 1883)
- Chamberlainia duclerci (Rochebrune, 1882)
- Chamberlainia hainesiana (Lea, 1856)
- Chamberlainia somsakpanhai Kongim, Sutcharit & Jeratthitkul, 2023
- Chamelea gallina (Linnaeus, 1758)
- Charonia tritonis (Linnaeus, 1758)
- Charonia variegata (Lamarck, 1816)
- Chauvetea brunnea
- Chauvetia brunnea (Donovan, 1804)
- Cheilea corrugata (Broderip, 1834)
- Cheilea equestris (Linnaeus, 1758)
- Chelidonopsis hirundo (Martens, 1881)
- Chelidonura hirundinina (Quoy and Gaimard, 1833)
- Chelidonura sabina Er. Marcus and Ev. Marcus, 1970
- Chicomurex laciniatus (G. B. Sowerby II, 1841)
- Chicomurex superbus (G. B. Sowerby III, 1889)
- Chicoreus beauii (P. Fischer and Bernardi, 1857)
- Chicoreus cailleti (Petit de la Saussaye, 1856)
- Chicoreus consuela (A. H. Verrill, 1950)
- Chicoreus dilectus (A. Adams, 1855)
- Chicoreus florifer
- Chicoreus formosus (Sowerby, 1841)
- Chicoreus mergus Vokes, 1974
- Chicoreus oculatus (Reeve, 1845)
- Chicoreus pomum (Gmelin, 1791)
- Chione amathusia (Philippi, 1844)
- Chione californiensis (Broderip, 1835)
- Chione cancellata (Linnaeus, 1767)
- Chione cingenda
- Chione gnidea (Broderip and Sowerby, 1829)
- Chione kellettii (Hinds, 1845)
- Chione mariae (Orbigny, 1846)
- Chione paphia (Linnaeus, 1767)
- Chione picta Willett, 1944
- Chione pulicaria (Broderip, 1835)
- Chione purpurissata Dall, 1902
- Chione squamosa (Carpenter, 1857)
- Chione subimbricata (Sowerby, 1835)
- Chione subrugosa (Wood, 1828)
- Chione succincta Linnaeus, 1767
- Chione undatella (G. B. Sowerby I, 1835)
- Chionista fluctifraga (G. B. Sowerby II, 1853)
- Chiroteuthis atlanticus (MacDonald and Clench, 1934)
- Chiroteuthis calyx Young, 1972
- Chiroteuthis diaphana (Verrill, 1884)
- Chiroteuthis imperator Chun, 1908
- Chiroteuthis joubini Voss, 1967
- Chiroteuthis mega (Joubin, 1932)
- Chiroteuthis picteti Joubin, 1894
- Chiroteuthis spoeli Salcedo-Vargas, 1996
- Chiroteuthis veranyi (Férussac, 1834)
- Chiton albolineatus
- Chiton articulatus Sowerby, 1832
- Chiton laevigatus Flemming, 1828
- Chiton marmoratus
- Chiton squamosus
- Chiton stokesi
- Chiton tuberculatus Linnaeus, 1758
- Chiton virgulatus
- Chiton viridis Spengler, 1797
- Chlamydoconcha orcutti Dall, 1884
- Chlamylla borealis Bergh, 1886
- Chlamys albida (R. Arnold, 1906)
- Chlamys behringiana (Middendorff, 1849)
- Chlamys bruei (Payraudeau, 1826)
- Chlamys circularis (Sowerby, 1835)
- Chlamys distorta
- Chlamys hastata (G. B. Sowerby II, 1842)
- Chlamys islandica (Müller, 1776)
- Chlamys jordani Arnold, 1903
- Chlamys kincaidi Oldroyd, 1929
- Chlamys liocymatus (Dall, 1925)
- Chlamys lioicus (Dall, 1907)
- Chlamys lowei (Hertlein, 1935)
- Chlamys muscosus Wood, 1828
- Chlamys navarcha Dall, 1898
- Chlamys opercularis (Linnaeus, 1758)
- Chlamys pseudislandica MacNeil, 1967
- Chlamys rubida (Hinds, 1845)
- Chlamys septemradiatus
- Chlamys strategus
- Chlamys subsulcata (Locard, 1898)
- Chlamys sulcata (O. F. Mueller, 1776)
- Chlamys tigerina
- Chlamys varia
- Chlamys wainwrightensis
- Chondropoma dentatum (Say, 1825)
- Choristes elegans Carpenter in Dawson, 1872
- Choristodon robustum (G. B. Sowerby I, 1834)
- Chromodoris aila Er. Marcus, 1961
- Chromodoris binza Ev. Marcus and Er. Marcus, 1963
- Chromodoris clenchi (Russell, 1935)
- Chromodoris dalli (Bergh, 1879)
- Chromodoris kempfi Ev. Marcus, 1970
- Chromodoris macfarlandi Cockerell, 1901
- Chromodoris morchii Bergh, 1879
- Chromodoris nyalya Ev. Marcus and Er. Marcus, 1967
- Chromodoris punctilucens Bergh, 1890
- Chromodoris roseopicta (A. E. Verrill, 1900)
- Chrysallida cancellata (d'Orbigny, 1842)
- Chrysallida decussata
- Chrysallida gemmulosa (C. B. Adams, 1850)
- Chrysallida obtusa
- Chrysallida spiralis
- Chrysallida toroensis (Olsson and McGinty, 1958)
- Chtenopteryx chuni Pfeffer, 1912
- Chtenopteryx sepioloides (Rancurel, 1970)
- Chtenopteryx sicula (Verany, 1851)
- Chunioteuthis ebersbachii Grimpe, 1916
- Chunioteuthis gilchristi (Robson, 1924)
- Cidarina cidaris (A. Adams, 1864)
- Cincinnatia integra (Say, 1821)
- Cingula alaskana Bartsch, 1912
- Cingula aleutica Dall, 1886
- Cingula asser (Bartsch, 1910)
- Cingula castanea (Moller, 1842)
- Cingula cerinella
- Cingula cingillis (Montagu, 1803)
- Cingula eyerdami
- Cingula fernandinae Dall, 1927
- Cingula floridana
- Cingula forresterensis
- Cingula katherinae Bartsch, 1912
- Cingula kyskensis
- Cingula martyni Dall, 1887
- Cingula megalomastomus Olsson and McGinty, 1958
- Cingula moerchi Collin, 1887
- Cingula montereyensis Bartsch, 1912
- Cingula palmeri
- Cingula pulcherrima
- Cingula robertsoni
- Cingula robusta
- Cingula scipio Dall, 1887
- Cingula semistriata Montagu, 1803
- Cingula stewardsoni (Vanatta, 1909)
- Cingulina babylonia (C. B. Adams, 1845)
- Cingulina evermanni Baker, Hanna, and Strong, 1928
- Cingulina urdeneta (Bartsch, 1917)
- Cingulopsis fulgida
- Cionella lubrica (Muller, 1774)
- Cionella lubricella (Porro, 1838)
- Cionella morseana Doherty, 1878
- Cionella nitens (Gallenstein, 1848)
- Cipangopaludina chinensis (Gray, 1834)
- Cipangopaludina japonica (von Martens, 1861)
- Circomphalus callimorphus (Dall, 1902)
- Circomphalus casina (Linnaeus, 1758)
- Circomphalus fordi (Yates, 1890)
- Circomphalus strigillinus (Dall, 1902)
- Circulus cosmius Bartsch, 1907
- Circulus cubanus Pilsbry and Aguaya, 1933
- Circulus dalli Bush, 1897
- Circulus hendersoni (Olsson and McGinty, 1958)
- Circulus liratus (Verrill, 1882)
- Circulus margaritiformis Dall, 1927
- Circulus multistriatus (A. E. Verrill, 1884)
- Circulus rossellinus Dall, 1919
- Circulus semisculptus (Olsson and McGinty, 1958)
- Circulus suppressus (Dall, 1889)
- Circulus texanus (Moore, 1965)
- Circulus translucens Dall, 1927
- Cirroteuthis hoylei Robson, 1932
- Cirroteuthis magna Hoyle, 1885
- Cirroteuthis massyae Grimpe, 1920
- Cirroteuthis mulleri Eschricht, 1836
- Cirrothauma murrayi Chun, 1911
- Cirsotrema arcella Rehder, 1945
- Cirsotrema dalli Rehder, 1945
- Cirsotrema pilsbryi (McGinty, 1940)
- Cirsotrema togatum Hertlein and Strong, 1951
- Cirsotrema varicosa
- Cirsotrema vulpinum (Hinds, 1844)
- Cistopus indicus (Rapp, 1835 in Férussac and D'Orbigny, 1834-1848)
- Cittarium pica (Linnaeus, 1758)
- Clappia cahabensis Clench, 1965
- Clappia umbilicata (Walker, 1904)
- Clathromangelia fuscoligata (Dall, 1871)
- Clathromangelia interfossa (Carpenter, 1864)
- Clathrus clathrus
- Clathurella canfieldi (Dall, 1871)
- Clathurella capaniola (Dall, 1919)
- Clathurella castianira Dall, 1919
- Clathurella conradiana Gabb, 1869
- Clathurella crystallina Gabb, 1865
- Clathurella eversoni Tippett, 1995
- Clathurella rava (Hinds, 1843)
- Clathurella rigida (Hinds, 1843)
- Clausinella fasciata (Da Costa, 1778)
- Clavus cadensai (Clench and Aguayo, 1939)
- Clavus flammulatus Montfort, 1910
- Clavus johnsoni (Bartsch, 1934)
- Cleba chrysosticta
- Cleba cordata Niebuhr, 1776
- Clinocardium blandum (Gould, 1850)
- Clinocardium californiense (Deshayes, 1839)
- Clinocardium ciliatum (Fabricius, 1780)
- Clinocardium nuttallii (Conrad, 1837)
- Clinopegma magnum (Dall, 1895)
- Clio andreae (Boas, 1886)
- Clio balantium Rang, 1834
- Clio chaptalii J. E. Gray, 1850
- Clio cuspidata (Bosc, 1802)
- Clio polita (Pelseneer, 1888)
- Clio pyramidata Linnaeus, 1767
- Clio recurva (Children, 1823)
- Clione antarctica (Smith, 1902)
- Clione limacina (Phipps, 1774)
- Cliopsis krohnii Troschel, 1854
- Coccopigya spinigera (Jeffreys, 1883)
- Cocculina agassizi Dall, 1908
- Cocculina beani Dall, 1882
- Cocculina casanica Dall, 1919
- Cocculina conica Verrill, 1884
- Cocculina dalli Verrill, 1884
- Cocculina georgiana Dall, 1927
- Cocculina leptalea Verrill, 1884
- Cocculina lissocona Dall, 1927
- Cocculina portoricensis Dall and Simpson, 1901
- Cocculina rathbuni Dall, 1882
- Cocculina reticulata A. E. Verrill, 1885
- Cocculina rotunda Dall, 1927
- Cocculina spinigera Jeffreys, 1883
- Cochlespira cedonulli (Reeve, 1843)
- Cochlespira elegans (Dall, 1881)
- Cochlespira radiata (Dall, 1889)
- Cochlicella barbara (Linnaeus, 1758)
- Cochlicopa lubrica (Muller, 1774)
- Cochlicopa lubricella (Porro, 1838)
- Cochlicopa morseana (Doherty, 1878)
- Cochlicopa nitens (Gallenstein, 1848)
- Cochliolepis holmesii (Dall, 1889)
- Cochliolepis parasitica Stimpson, 1858
- Cochliolepis striata Dall, 1889
- Cochliopina riograndensis (Pilsbry and Ferriss, 1906)
- Cochlodesma praetenue (Pulteney, 1799)
- Cochlodesma tenerum (Jeffreys, 1880)
- Cochlodinella poeyana (d'Orbigny, 1841)
- Codakia costata (d'Orbigny, 1842)
- Codakia cubana Dall, 1901
- Codakia decussata (O. G. Costa, 1836)
- Codakia distinguenda (Tryon, 1872)
- Codakia orbicularis (Linnaeus, 1758)
- Codakia orbiculata (Montagu, 1808)
- Codakia pectinella (C. B. Adams, 1852)
- Coelatura aegyptiaca (Cailliaud, 1827)
- Coelatura alluaudi (Dautzenberg, 1908)
- Coelatura bakeri (H. Adams, 1866)
- Coelatura briarti (Dautzenberg, 1901)
- Coelatura choziensis (Preston, 1910)
- Coelatura cridlandi Mandahl-Barth, 1954
- Coelatura disciformis (Rochebrune, 1886)
- Coelatura essoensis (Chaper, 1885)
- Coelatura gabonensis (Küster, 1862)
- Coelatura hauttecoeuri (Bourguignat, 1883)
- Coelatura horei (E. A. Smith, 1880)
- Coelatura hypsiprymna (Martens, 1897)
- Coelatura kipopoensis Mandahl-Barth, 1968
- Coelatura kunenensis (Mousson, 1887)
- Coelatura leopoldvillensis (Putzeys, 1898)
- Coelatura lobensis (Frierson, 1913)
- Coelatura luapulaensis (Preston, 1913)
- Coelatura mesafricana Pilsbry & Bequaert, 1927
- Coelatura mossambicensis (Martens, 1860)
- Coelatura ratidota (Charmes, 1885)
- Coelatura rothschildi (Neuville & Anthony, 1906)
- Coelatura stagnorum (Dautzenberg, 1890)
- Coelatura stanleyvillensis Pilsbry & Bequaert, 1927
- Coelatura stuhlmanni (Martens, 1897)
- Coelostemma pyrgonasta F. G. Thompson, 1988
- Coleophysis carinata (Carpenter, 1857)
- Coleophysis harpa
- Colga minichevi Martynov and Baranets, 2002
- Colga pacifica (Bergh, 1894)
- Colga villosa (Odhner, 1907)
- Colligyrus convexus Hershler, Frest, Liu and Johannes, 2003
- Colligyrus depressus Hershler, 1999
- Colligyrus greggi (Pilsbry, 1935)
- Collisella alveus (Conrad, 1831)
- Collisella asmi (Middendorff, 1849)
- Collisella borealis Linberg, 1982
- Collisella conus (Test, 1945)
- Collisella digitalis Rathke, 1833
- Collisella edmitchelli (Lipps, 1963)
- Collisella insessa (Hinds, 1842)
- Collisella instabilis (Gould, 1846)
- Collisella jamaicensis (Gmelin, 1791)
- Collisella leucopleura (Gmelin, 1791)
- Collisella limatula
- Collisella ochracea (Dall, 1871)
- Collisella paradigitalis (Fritchman, 1960)
- Collisella pelta Rathke, 1833
- Collisella scabra (Gould, 1846)
- Collisella strigatella (Carpenter, 1864)
- Collisella triangularis (Carpenter, 1864)
- Colpodaspis pusilla M. Sars, 1870
- Colubraria biliratus (Reeve, 1846)
- Colubraria monroei Mcginty, 1962
- Colubraria obscura (Reeve, 1844)
- Colubraria swifti (Tryon, 1881)
- Colubraria testacea (Morch, 1852)
- Columbarium atlantis
- Columbarium aurora
- Columbarium bartletti
- Columbarium bermudezi
- Columbarium brayi
- Columbarium electra
- Columbarium merope
- Columbella aureola Duclos, 1846
- Columbella aureomexicana (Howard, 1963)
- Columbella mercatoria (Linnaeus, 1758)
- Columbella rusticoides Heilprin, 1886
- Columbellopsis nycteis (Duclos, 1846)
- Columella columella (von Martens, 1830)
- Columella edentula (Draparnaud, 1805)
- Columella simplex (Gould, 1840)
- Colus acosmius (Dall, 1891)
- Colus adonis (Dall, 1919)
- Colus amrautius
- Colus aphelus (Dall, 1890)
- Colus aurantius (Dall, 1907)
- Colus barbarinus Dall, 1919
- Colus bristolensis Dall, 1919
- Colus brunneus (Dall, 1877)
- Colus caelathus (A. E. Verrill and S. Smith, 1880)
- Colus caelatus (A. E. Verrill and Smith, 1880)
- Colus calameus (Dall, 1907)
- Colus calathus Dall, 1919
- Colus callorhinus (Dall, 1877)
- Colus capponius Dall, 1919
- Colus dalmasius (Dall, 1919)
- Colus dautzenbergi (Dall, 1916)
- Colus errones Dall, 1919
- Colus esychus (Dall, 1907)
- Colus georgianus (Dall, 1921)
- Colus glyptus (Verrill, 1882)
- Colus gracilis
- Colus griseus (Dall, 1890)
- Colus halibrectus (Dall, 1891)
- Colus halidonus Dall, 1919
- Colus halimeris (Dall, 1919)
- Colus hallii (Dall, 1873)
- Colus herendeenii (Dall, 1902)
- Colus holbolli (Moller, 1842)
- Colus hunkinsi A. H. Clarke, 1962
- Colus incisus (Dall, 1919)
- Colus islandicus (Mohr, 1786)
- Colus jeffreysianus
- Colus jordani (Dall, 1913)
- Colus kroyeri (Möller, 1842)
- Colus latericeus (Moller, 1842)
- Colus leptalens (Verrill, 1884)
- Colus martensi (Krause, 1885)
- Colus oceanodromae (Dall, 1919)
- Colus ombronius Dall, 1919
- Colus parvus (Tiba, 1980)
- Colus periscelidus (Dall, 1891)
- Colus perminutus (Dall, 1927)
- Colus profundicola (Verrill and Smith, 1884)
- Colus pubescens (A. E. Verrill, 1882)
- Colus pulcius (Dall, 1919)
- Colus pygmaeus (Gould, 1841)
- Colus roseus (Dall, 1877)
- Colus rushii Dall, 1889
- Colus sabinii (J. E. Gray, 1824)
- Colus sapius (Dall, 1919)
- Colus severinus (Dall, 1919)
- Colus stejnegeri (Dall, 1884)
- Colus stimpsoni (Mørch, 1867)
- Colus syrtensis (Packard, 1867)
- Colus tahwitanus (Dall, 1918)
- Colus terraenovae Bouchet and Waren, 1985
- Colus timetus (Dall, 1919)
- Colus trombinus (Dall, 1919)
- Colus trophius (Dall, 1919)
- Colus turgidulus (Friele, 1877)
- Colus verkruezeni (Kobelt, 1876)
- Colus virens (Dall, 1877)
- Comarmondia gracilis (Montagu, 1903)
- Compressidens ophiodon (Dall, 1881)
- Compressidens pressus (Pilsbry and Sharp, 1897)
- Compressidens stearnsii Pilsbry and Sharp, 1897
- Compsodrillia acestra (Dall, 1889)
- Compsodrillia albonodosa (Carpenter, 1857)
- Compsodrillia alcestis (Dall, 1919)
- Compsodrillia bicarinata (Shasky, 1961)
- Compsodrillia disticha Bartsch, 1934
- Compsodrillia duplicata (Sowerby, 1834)
- Compsodrillia eucosmia (Dall, 1889)
- Compsodrillia excentrica (Sowerby, 1834)
- Compsodrillia haliostrephis (Dall, 1889)
- Compsodrillia haliplexa (Dall, 1919)
- Compsodrillia olssoni Mclean and Poorman, 1971
- Compsodrillia opaca Mclean and Poorman, 1971
- Compsodrillia thestia (Dall, 1919)
- Compsodrillia tristicha (Dall, 1889)
- Compsomyax subdiaphana (Carpenter, 1864)
- Conchocele bisecta (Conrad, 1849)
- Conchocele disjuncta Gabb, 1866
- Congeria leucophaeta
- Conualevia alba Collier and Farmer, 1964
- Conus abbotti Clench, 1942
- Conus acutangulus
- Conus amphiurgus Dall, 1889
- Conus anabathrum Crosse, 1865
- Conus archon Broderip, 1833
- Conus arcuatus Broderip and Sowerby, 1829
- Conus armiger Crosse, 1858
- Conus attenuatus Reeve, 1844
- Conus aureonimbosus Petuch, 1987
- Conus austini Rehder and Abbott, 1951
- Conus bajanensis Usticke, 1968
- Conus bartschi Hanna and Strong, 1949
- Conus bermudensis Clench, 1942
- Conus binghamae Petuch, 1987
- Conus brunneus Wood, 1828
- Conus californicus Hinds, 1844
- Conus cancellatus Hwass, 1792
- Conus cardinalis Hwass, 1792
- Conus caribbaeus Clench, 1942
- Conus chrysocestus S. S. Berry, 1968
- Conus citrinus Gmelin, 1791
- Conus clarki Rehder and Abbott, 1951
- Conus dalli Stearns, 1873
- Conus daucus Hwass, 1792
- Conus delessertii Recluz, 1843
- Conus diadema Sowerby, 1834
- Conus dispar Sowerby, 1833
- Conus ermineus Born, 1778
- Conus fergusoni Sowerby, 1873
- Conus flamingo Petuch, 1980
- Conus flavescens G. B. Sowerby II, 1834
- Conus floridanus Gabb, 1868
- Conus floridensis G. B. Sowerby II, 1870
- Conus gladiator Broderip, 1833
- Conus glicksteini Petuch, 1987
- Conus gradatus Wood, 1828
- Conus granulatus Linnaeus, 1758
- Conus harasewychi Petuch, 1987
- Conus jaspideus Gmelin, 1791
- Conus juliae Clench, 1942
- Conus lucidus Wood, 1828
- Conus macgintyi Pilsbry, 1955
- Conus mazei Deshayes, 1874
- Conus mcgintyi Pilsbry, 1955
- Conus melvilli Sowerby, 1878
- Conus mindanus Hwass, 1792
- Conus mus Hwass, 1792
- Conus patae Abbott, 1971
- Conus patricius Hinds, 1843
- Conus pealii Green, 1830
- Conus perplexus Sowerby, 1857
- Conus perryae Clench, 1942
- Conus poormani S. S. Berry, 1968
- Conus princeps Linnaeus, 1758
- Conus purpurascens Sowerby, 1833
- Conus rainesae McGinty, 1953
- Conus ranuculus
- Conus recurvus Broderip, 1833
- Conus regius Gmelin, 1791
- Conus regularis Sowerby, 1833
- Conus scalaris Valenciennes, 1832
- Conus selenae Van Mol, Tursch, and Kempf, 1967
- Conus sennottorum Rehder and Abbott, 1951
- Conus sponsalis
- Conus spurius Gmelin, 1791
- Conus stearnsii Conrad, 1869
- Conus stimpsoni Dall, 1902
- Conus tornatus Sowerby, 1933
- Conus ustickei Miller In Usticke, 1959
- Conus vexillum Gmelin, 1789
- Conus villepinii P. Fischer and Bernardi, 1857
- Conus virgatus Reeve, 1849
- Conus vittatus Hwass In Bruguiere, 1792
- Conus ximenes Gray, 1839
- Conus ziczac Megerle von Muhlfeld, 1816
- Cooperella atlantica Rehder, 1943
- Cooperella subdiaphana (Carpenter, 1864)
- Copulabyssia corrugata (Jeffreys, 1883)
- Coralliophaga coralliophaga (Gmelin, 1791)
- Coralliophaga lithophagella (Lamarck, 1819)
- Coralliophila abbreviata (Lamarck, 1816)
- Coralliophila aberrans (C. B. Adams, 1850)
- Coralliophila aedonia (Watson, 1886)
- Coralliophila bracteata (Brocchi, 1814)
- Coralliophila caribaea Abbott, 1958
- Coralliophila costata (de Blainville, 1832)
- Coralliophila fax F. M. Bayer, 1971
- Coralliophila galea (Reeve, 1846)
- Coralliophila macleani Shasky, 1970
- Coralliophila nux (Reeve, 1846)
- Coralliophila orcuttiana Dall, 1919
- Coralliophila pacei Petuch, 1987
- Coralliophila parva (E. A. Smith, 1877)
- Coralliophila richardi (P. Fischer, 1882)
- Coralliophila scalariformis (Lamarck, 1822)
- Corambe evelinae Marcus, 1959
- Corambe obscura (A. E. Verrill, 1870)
- Corambe pacifica Macfarland and O'donoghue, 1929
- Corambe testudinaria H. Fischer, 1889
- Corbicula fluminalis (O. F. Müller, 1774)
- Corbicula fluminea (O. F. Müller, 1774)
- Corbicula manilensis Philippi
- Corbula alabamiensis Lea, 1833
- Corbula barrattiana C. B. Adams, 1852
- Corbula bicarinata (Sowerby, 1833)
- Corbula biradiata (Sowerby, 1833)
- Corbula caribaea
- Corbula chittyana C. B. Adams, 1852
- Corbula contracta Say, 1822
- Corbula cubaniana D'Orbigny, 1842
- Corbula cymella Dall, 1881
- Corbula dietziana C. B. Adams, 1852
- Corbula kelseyi Dall, 1916
- Corbula krebsiana C. B. Adams, 1852
- Corbula luteola Carpenter, 1864
- Corbula nasuta Sowerby, 1833
- Corbula nuciformis Sowerby, 1833
- Corbula porcella Dall, 1916
- Corbula sulcata
- Corbula swiftiana C. B. Adams, 1852
- Corolla calceola (A. E. Verrill, 1880)
- Corolla intermedia (Tesch, 1903)
- Corolla ovata (Quoy and Gaimard, 1832)
- Corolla spectabilis Dall, 1871
- Coryphella borealis Odhner, 1922
- Coryphella browni Picton, 1980
- Coryphella californica Bergh, 1904
- Coryphella cynara
- Coryphella lineata
- Coryphella pallida
- Coryphella parva Hadfeild, 1963
- Coryphella pedata
- Coryphella rutila
- Coryphella stellata
- Coryphella stimpsoni Verrill, 1880
- Cosa brasiliensis Klappenbach, 1966
- Cosa caribaea (Carpenter, 1864)
- Cosmioconcha calliglypta (Dall and Simpson, 1901)
- Cosmioconcha modesta (Powys, 1935)
- Cosmioconcha nitens (C. B. Adams, 1850)
- Cosmioconcha palmeri (Dall, 1913)
- Cosmioconcha parvula (Dall, 1912)
- Cosmioconcha pergracilis (Dall, 1913)
- Cosmotriphora decorata (C. B. Adams, 1850)
- Cosmotriphora melanura (C. B. Adams, 1850)
- Cosmotriphora olivacea (Dall, 1889)
- Costasiella nonatoi Ev. Marcus and Er. Marcus, 1960
- Costasiella ocellifera (Simroth, 1895)
- Costoanachis avara (Say, 1822)
- Costoanachis catenata (G. B. Sowerby II, 1844)
- Costoanachis floridana (Rehder, 1939)
- Costoanachis lafresnayi (P. Fischer and Bernardi, 1857)
- Costoanachis semiplicata (Stearns, 1873)
- Costoanachis similis (Ravenel, 1861)
- Costoanachis sparsa (Reeve, 1859)
- Couthouyella striatula (Couthouy, 1838)
- Cranchia scabra Leach, 1817
- Cranopsis asturiana (P. Fischer, 1882)
- Cranopsis billsae (Perez Farfante, 1947)
- Cranopsis cucullata (Gould, 1846)
- Cranopsis decorata (I. M. Cowan and J. H. McLean, 1968)
- Cranopsis erecta (Dall, 1889)
- Cranopsis granulata (Seguenza, 1862)
- Cranopsis major (Dall, 1891)
- Cranopsis multistriata (Dall, 1914)
- Craspedochiton hemphilli
- Crassadoma gigantea (J. E. Gray, 1825)
- Crassatella ponderosa Gmelin, 1791
- Crassicardia crassidens (Broderip and Sowerby, 1829)
- Crassinella dupliniana (Dall, 1903)
- Crassinella lunulata (Conrad, 1834)
- Crassinella martinicensis (d'Orbigny, 1842)
- Crassinella pacifica (C. B. Adams, 1852)
- Crassispira adonis Pilsbry and Lowe, 1932
- Crassispira albinodata (Reeve, 1843)
- Crassispira albomaculata (Orbigny, 1842)
- Crassispira apitoa (Corea, 1934)
- Crassispira appressa (Carpenter, 1884)
- Crassispira bacchia Dall, 1919
- Crassispira brujae Hertlein and Strong, 1951
- Crassispira candace Dall, 1919
- Crassispira chacei Hertlein and Strong, 1951
- Crassispira cortezi Shasky and Campbell, 1964
- Crassispira cubana (Melvill, 1923)
- Crassispira dichroa Pilsbry and Lowe, 1932
- Crassispira discors (Sowerby, 1834)
- Crassispira drangai Schwengel, 1951
- Crassispira ericana Hertlein and Strong, 1951
- Crassispira fuscescens (Reeve, 1845)
- Crassispira granulosa (Sowerby, 1834)
- Crassispira greeleyi (Dall, 1901)
- Crassispira gundlachi (Dall and Simpson, 1901)
- Crassispira haliostrephis
- Crassispira halis Dall, 1919
- Crassispira hexagona (Sowerby, 1834)
- Crassispira incrassata (Sowerby, 1834)
- Crassispira kluthi E. K. Jordan, 1936
- Crassispira leucocyma Dall, 1883
- Crassispira liella (Corea, 1934)
- Crassispira mamona (Corea, 1934)
- Crassispira maura (Sowerby, 1834)
- Crassispira melonesiana (Dall and Simpson, 1901)
- Crassispira monilifera Carpenter, 1864
- Crassispira monilis (Bartsch and Rehder, 1939)
- Crassispira montereyensis Stearns, 1871
- Crassispira nigerrima (Sowerby, 1834)
- Crassispira nigrescens (C. B. Adams, 1945)
- Crassispira nymphia Pilsbry and Lowe, 1932
- Crassispira ornata Orbigny, 1842
- Crassispira ostrearum
- Crassispira phasma Schwengel, 1940
- Crassispira pluto Pilsbry and Lowe, 1932
- Crassispira polytorta (Dall, 1881)
- Crassispira quadrifasciata (Reeve, 1845)
- Crassispira rhythmica Melvill, 1927
- Crassispira rudis (Sowerby, 1834)
- Crassispira rugitecta (Dall, 1918)
- Crassispira rustica (Sowerby, 1834)
- Crassispira sanibelensis Bartsch and Rehder, 1939
- Crassispira semiinflata (Grant and Gale, 1931)
- Crassispira stillmani Shasky, 1947
- Crassispira suimaca (Corea, 1934)
- Crassispira tainoa (Corea, 1934)
- Crassispira tampaensis Bartsch and Rehder, 1939
- Crassispira tepocana Dall, 1919
- Crassispira trimariana Pilsbry and Lowe, 1932
- Crassispira turricula (Sowerby, 1834)
- Crassispira unicolor (Sowerby, 1834)
- Crassispira xanti Hertlein and Strong, 1951
- Crassispira zebra
- Crassostrea angulata Lamarck
- Crassostrea ariakensis (Fujita, 1913)
- Crassostrea chilensis Hertlein
- Crassostrea columbiensis (Hanley, 1846)
- Crassostrea corteziensis (Hertlein, 1951)
- Crassostrea gigas (Thunberg, 1793)
- Crassostrea rhizophorae Guilding
- Crassostrea virginica (Gmelin, 1791)
- Cratena kaoruae Marcus, 1957
- Cratena pilata (Gould, 1870)
- Creedonia succinea (Pfeiffer, 1854)
- Crenella decussata (Montagu, 1808)
- Crenella divaricata (d'Orbigny, 1842)
- Crenella faba (Muller, 1776)
- Crenella fragilis A. E. Verrill, 1885
- Crenella glandula (Totten, 1834)
- Crenella leana Dall, 1897
- Crenella pectinula (Gould, 1841)
- Crenella pellucida (Jeffreys, 1859)
- Crenella rotundata Dall, 1916
- Crenella skomma (Schwengel, 1944)
- Crenilabium aciculatum Cossmann, 1889
- Crenilabium exilis (Jeffreys, 1870)
- Crepidula aculeata (Gmelin, 1791)
- Crepidula acuta Say, 1822
- Crepidula adunca G. B. Sowerby I, 1825
- Crepidula arenata (Broderip, 1834)
- Crepidula convexa Say, 1822
- Crepidula excavata Broderip, 1834
- Crepidula fornicata (Linnaeus, 1758)
- Crepidula glottidiarum Dall, 1905
- Crepidula grandis Middendorff, 1849
- Crepidula incurva (Broderip, 1834)
- Crepidula lessonii (Broderip, 1834)
- Crepidula maculosa Conrad, 1846
- Crepidula naticarum Williamson, 1905
- Crepidula norrisiarum Williamson, 1905
- Crepidula nummaria Gould, 1846
- Crepidula onyx G. B. Sowerby I, 1824
- Crepidula perforans (Valenciennes, 1846)
- Crepidula plana Say, 1822
- Crepidula striolata Menke, 1851
- Crepidula uncata Menke, 1847
- Crepipatella charybdis (S. S. Berry, 1940)
- Crepipatella dorsata (Broderip, 1834)
- Crepipatella lingulata (Gould, 1846)
- Crepipatella orbiculata (Dall, 1919)
- Crepitacella cepula Guppy, 1867
- Crepitacella columbella (Dall, 1881)
- Crepitacella gabbi (Dall, 1889)
- Crepitacella leucophlegma (Dall, 1881)
- Crepitacella vestalis Rehder, 1943
- Creseis acicula (Rang, 1828)
- Creseis chierchiae
- Creseis virgula (Rang, 1828)
- Crimora coneja Er. Marcus, 1961
- Crimora papillata Alder and Hancock, 1862
- Cristaria beirensis Liu & Zhang, 1982
- Cristaria bellua (Morelet, 1866)
- Cristaria clessini (Kobelt, 1879)
- Cristaria plicata (Leach, 1814)
- Cristaria radiata Simpson, 1900
- Cristaria truncata Dang, Thái & Pham, 1980
- Crockerella castianira (Dall, 1919)
- Crockerella conradiana (Gabb, 1869)
- Crockerella crystallina (Gabb, 1865)
- Crockerella cymodoce (Dall, 1919)
- Crockerella eriphyle (Dall, 1919)
- Crockerella evadne (Dall, 1919)
- Crockerella lowei (Dall, 1903)
- Crockerella philodice (Dall, 1919)
- Crockerella scotti J. H. McLean, 1996
- Crockerella tridesmia (S. S. Berry, 1941)
- Crossata californica (Hinds, 1843)
- Crucibulum auricula (Gmelin, 1791)
- Crucibulum concameratum Reeve, 1859
- Crucibulum cyclopium S. S. Berry. 1969
- Crucibulum lignarium (Broderip, 1834)
- Crucibulum monticulus S. S. Berry, 1969
- Crucibulum personatum Keen, 1958
- Crucibulum scutellatum (Wood, 1828)
- Crucibulum serratum (Broderip, 1834)
- Crucibulum spinosum (G. B. Sowerby I, 1824)
- Crucibulum striatum Say, 1824
- Crucibulum subactum S. S. Berry, 1963
- Crucibulum umbrella (Deshayes, 1830)
- Cryoturris cerinella (Dall, 1889)
- Cryoturris citronella (Dall, 1889)
- Cryoturris elata (Dall, 1899)
- Cryoturris engonia Woodring, 1928
- Cryoturris fargoi McGinty, 1955
- Cryoturris filifera (Dall, 1881)
- Cryoturris quadrilineata (C. B. Adams, 1850)
- Cryoturris trilineata (C. B. Adams, 1845)
- Cryptobranchia alba Dall, 1869
- Cryptobranchia concentrica (Middendorff, 1851)
- Cryptochiton stelleri (Middendorff, 1847)
- Cryptoconchus floridanus (Dall, 1889)
- Cryptoconchus porosus
- Cryptomastix devia (Gould, 1846)
- Cryptomastix germana (Gould, 1851)
- Cryptomastix harfordiana (W. G. Binney, 1886)
- Cryptomastix hendersoni (Pilsbry, 1928)
- Cryptomastix magnidentata (Pilsbry, 1940)
- Cryptomastix mullani (Bland and J. G. Cooper, 1861)
- Cryptomastix sanburni (W. G. Binney, 1886)
- Cryptomya californica (Conrad, 1837)
- Cryptonatica affinis (Gmelin, 1791)
- Cryptonatica aleutica (Dall, 1919)
- Cryptonatica janthostoma (Deshayes, 1839)
- Cryptonatica russa (Gould, 1859)
- Cryptopecten phrygium (Dall, 1886)
- Ctena bella
- Ctena transversa
- Ctenodesma borneensis (Issel, 1874)
- Ctenodesma scheibeneri Haas, 1927
- Cucullaea labiata (Solander)
- Cucumerunio novaehollandiae (Gray, 1834)
- Cultellus pellucidus
- Cumanotus beaumonti (Eliot, 1906)
- Cumanotus fernaldi T. E. Thompson and G. H. Brown, 1984
- Cumberlandia monodonta (Say, 1829)
- Cumingia californica Conrad, 1837
- Cumingia coarctata G. B. Sowerby I, 1833
- Cumingia tellinoides (Conrad, 1831)
- Cuna dalli Vanatta, 1904
- Cuneopsis celtiformis (Heude, 1874)
- Cuneopsis demangei Haas, 1929
- Cuneopsis heudei (Heude, 1874)
- Cuneopsis kiangsiensis Tchang & Li, 1965
- Cuneopsis rufescens (Heude, 1874)
- Curtitoma decussata (Couthuoy, 1839)
- Curtitoma fiora (Dall, 1919)
- Curtitoma incisula (A. E. Verrill, 1882)
- Curtitoma lawrenciana (Dall, 1919)
- Curtitoma novajasemljensis (Leche, 1878)
- Curtitoma trevelliana (Turton, 1834)
- Curtitoma violacea (Mighels and C. B. Adams, 1842)
- Cuspidaria abbreviata (Forbes, 1843)
- Cuspidaria alternata (d'Orbigny, 1842)
- Cuspidaria apodema Dall, 1916
- Cuspidaria arctica (Sars, 1878)
- Cuspidaria arcuata Dall, 1881
- Cuspidaria atlantica
- Cuspidaria chilensis Dall, 1890
- Cuspidaria circinata Jeffreys, 1876
- Cuspidaria costellata (Deshayes, 1833)
- Cuspidaria cuspidata (Olivi, 1792)
- Cuspidaria exigua (Jeffreys, 1876)
- Cuspidaria filatovae
- Cuspidaria formosa Verrill and Bush, 1893
- Cuspidaria fraterna Verrill and Bush, 1893
- Cuspidaria gigantea Verrill, 1884
- Cuspidaria glacialis (G. O. Sars, 1878)
- Cuspidaria inflata (Jeffreys, 1876)
- Cuspidaria jeffreysi (Dall, 1881)
- Cuspidaria jugosa (S. V. Wood, 1856)
- Cuspidaria lamellosa Sars, 1878
- Cuspidaria media A. E. Verrill and Bush, 1898
- Cuspidaria microrhina Dall, 1886
- Cuspidaria obesa (Loven, 1846)
- Cuspidaria parapodema Bernard, 1969
- Cuspidaria parkeri
- Cuspidaria parva
- Cuspidaria pellucida Stimpson, 1853
- Cuspidaria rostrata (Spengler, 1793)
- Cuspidaria subglacialis Dall, 1913
- Cuspidaria subtorta (Sars, 1878)
- Cuspidaria subtorte (Sars, 1878)
- Cuspidaria sulcifera (Jeffreys, 1882)
- Cuspidaria turgida Verrill and Bush, 1898
- Cuspidaria undata Verrill, 1884
- Cuspidaria variola
- Cuspidaria ventricosa Verrill and Bush, 1898
- Cuspidaria wollastoni E. A. Smith, 1885
- Cuthona abronia (MacFarland, 1966)
- Cuthona abyssicola (Bergh, 1884)
- Cuthona albocrusta (MacFarland, 1966)
- Cuthona amoena (Alder and Hancock, 1845)
- Cuthona aurantia (Alder and Hancock, 1842)
- Cuthona caerulea (Montagu, 1804)
- Cuthona cocoachroma Williams and Gosliner, 1979
- Cuthona concinna (Alder and Hancock, 1843)
- Cuthona divae (Er. Marcus, 1961)
- Cuthona flavovulta (MacFarland, 1966)
- Cuthona foliata (Forbes and Goodsir, 1839)
- Cuthona fulgens (MacFarland, 1966)
- Cuthona genovae (O'Donoghue, 1926)
- Cuthona hamanni Behrens, 1987
- Cuthona lagunae (O'Donoghue, 1926)
- Cuthona nana (Alder and Hancock, 1842)
- Cuthona perca (Er. Marcus, 1958)
- Cuthona phoenix Gosliner, 1981
- Cuthona punicea Millen, 1986
- Cuthona pustulata (Alder and Hancock, 1854)
- Cuthona rolleri Behrens and Gosliner, 1988
- Cuthona rubescens Picton and Brown, 1978
- Cuthona stimpsoni A. E. Verrill, 1880
- Cuthona tina (Er. Marcus, 1957)
- Cuthona veronicae (A. E. Verrill, 1880)
- Cuthona virens (MacFarland, 1966)
- Cuthona viridis (Forbes, 1840)
- Cuvierina columnella (Rang, 1827)
- Cyathodonta dubiosa Dall, 1915
- Cyathodonta pedroana Dall, 1915
- Cyathodonta undulata Conrad, 1849
- Cyclinella tenuis (Recluz, 1852)
- Cyclocardia armilla (Dall, 1903)
- Cyclocardia bailyi (J. Q. Burch, 1944)
- Cyclocardia barbarensis (Stearns, 1891)
- Cyclocardia borealis (Conrad, 1831)
- Cyclocardia crassidens (Broderip and G. B. Sowerby I, 1829)
- Cyclocardia crebricostata (Krause, 1885)
- Cyclocardia gouldii (Dall, 1903)
- Cyclocardia incisa (Dall, 1903)
- Cyclocardia nodulosa (Dall, 1919)
- Cyclocardia novangliae (E. S. Morse, 1869)
- Cyclocardia ovata (Riabinina, 1952)
- Cyclocardia rjabininae (Scarlato, 1955)
- Cyclocardia spurca Sowerby, 1833
- Cyclocardia stearnsii (Dall, 1903)
- Cyclocardia umnaka (Willett, 1932)
- Cyclocardia ventricosa (Gould, 1850)
- Cyclonaias tuberculata (Rafinesque, 1820)
- Cyclopecten alaskensis (Dall, 1871)
- Cyclopecten barbarensis Grau, 1959
- Cyclopecten benthalis
- Cyclopecten carlottensis
- Cyclopecten catalinensis (Willett, 1931)
- Cyclopecten davidsoni (Dall, 1897)
- Cyclopecten exquisitus Grau, 1959
- Cyclopecten greenlandicus (G. B. Sowerby II, 1842)
- Cyclopecten imbrifer (Loven, 1847)
- Cyclopecten incongruus Dall, 1916
- Cyclopecten leptaleum (A. E. Verrill, 1884)
- Cyclopecten nanus A. E. Verrill and Bush, 1897
- Cyclopecten neoceanicus Dall, 1908
- Cyclopecten pernomus (Hertlein, 1935)
- Cyclopecten pustulosus Verrill, 1873
- Cyclopecten reticulum (Dall, 1886)
- Cyclopecten ringnesius (Dall, 1924)
- Cyclopecten sigsbeei (Dall, 1886)
- Cyclopecten thalassinus (Dall, 1886)
- Cyclostrema amabile (Say, 1934)
- Cyclostrema cancellatum Marryat, 1818
- Cyclostrema cookeanum (Dall, 1818)
- Cyclostrema huesonicum (Dall, 1927)
- Cyclostrema miranda Bartsch, 1910
- Cyclostrema ponsonbyi
- Cyclostrema schrammii Fischer, 1857
- Cyclostrema shrammi (Fischer, 1857)
- Cyclostrema tortuganum (Dall, 1927)
- Cyclostremella californica Bartsch, 1907
- Cyclostremella concordia Bartsch, 1920
- Cyclostremella conradia Bartsch, 1920
- Cyclostremella humilis Bush, 1897
- Cyclostremiscus baldridgei (Bartsch, 1911)
- Cyclostremiscus beauii (P. Fischer, 1857)
- Cyclostremiscus cosmius
- Cyclostremiscus cubanus (Pilsbry and Aguayo, 1933)
- Cyclostremiscus emeryi
- Cyclostremiscus gordanus (Hertlein and Strong, 1951)
- Cyclostremiscus humilis
- Cyclostremiscus jeannae Pilsbry and McGinty, 1946
- Cyclostremiscus liratus
- Cyclostremiscus lowei Baker, Hanna, and Strong, 1938
- Cyclostremiscus ornatus Olsson and McGinty, 1958
- Cyclostremiscus pentagonus (Gabb, 1873)
- Cyclostremiscus schrammi (Fisher, 1857)
- Cyclostremiscus spiceri Baker, Hanna, and Strong, 1938
- Cyclostremiscus spiritualis Baker, Hanna, and Strong, 1938
- Cyclostremiscus suppressus (Dall, 1889)
- Cycloteuthis akimushkini Filippova, 1968
- Cycloteuthis sirventi Joubin, 1919
- Cyclothyca pacei Petuch, 1987
- Cyerce antillensis Engel, 1927
- Cyerce cristallina (Trinchese, 1881)
- Cylichna alba (T. Brown, 1827)
- Cylichna attanosa
- Cylichna attonsa Carpenter, 1865
- Cylichna consobrina
- Cylichna crebripunctata (Jeffreys, 1881)
- Cylichna cylindracea (Pennant, 1777)
- Cylichna diegensis (Dall, 1919)
- Cylichna discus Watson, 1886
- Cylichna eburnea A. E. Verrill, 1885
- Cylichna fantasma (Baker and Hanna, 1927)
- Cylichna gouldii (Couthouy, 1839)
- Cylichna linearis Jeffreys, 1867
- Cylichna nucleolus (Reeve, 1855)
- Cylichna obscura Sykes, 1903
- Cylichna occulta (Mighels and C. B. Adams, 1842)
- Cylichna oryza
- Cylichna ovata Jeffreys, 1871
- Cylichna verrilli Dall, 1889
- Cylichna vortex (Dall, 1881)
- Cylichnella carinata
- Cylichnium africanum (Locard, 1897)
- Cylindrobulla beauii P. Fischer, 1857
- Cymakra aspera (Carpenter, 1864)
- Cymakra gracilior (Tryon, 1884)
- Cymatioa electilis (S. S. Berry, 1963)
- Cymatium amictum
- Cymatium aquatile (Reeve, 1844)
- Cymatium cingulatum (Lamarck, 1882)
- Cymatium comptum (A. Adams, 1855)
- Cymatium corrugatum (Lamarck, 1816)
- Cymatium costatum Pennant, 1777
- Cymatium cynocephalum (Lamarck, 1816)
- Cymatium femorale (Linnaeus, 1758)
- Cymatium gibbosum (Broderip, 1833)
- Cymatium gracile Reeve, 1844
- Cymatium krebsi Morch, 1877
- Cymatium labiosum (W. Wood, 1828)
- Cymatium lignarium (Broderip, 1833)
- Cymatium martinianum (d'Orbigny, 1846)
- Cymatium moritinctum (Reeve, 1844)
- Cymatium mundum (Gould, 1849)
- Cymatium muricinum (Roding, 1798)
- Cymatium nicobaricum (Roding, 1798)
- Cymatium occidentale (Morch, 1877)
- Cymatium parthenopeum (von Salis, 1793)
- Cymatium pfeifferianum (Reeve, 1844)
- Cymatium pharicidum Dall, 1889
- Cymatium pileare (Linnaeus, 1758)
- Cymatium pyrum Linnaeus
- Cymatium rehderi A. H. Verrill, 1950
- Cymatium ridleyi (E. A. Smith, 1890)
- Cymatium rubeculum (Linnaeus, 1758)
- Cymatium sarcostomum (Reeve, 1844)
- Cymatium tenuiliratum (Lischke, 1873)
- Cymatium testudinarium (Adams and Reeve, 1848)
- Cymatium tigrinum (Broderip, 1833)
- Cymatium vespaceum (Lamarck, 1822)
- Cymatium wiegmanni
- Cymatoica orientalis (Dall, 1890)
- Cymatoica undulata Hanley, 1844
- Cymatosyrinx allynainus Hertlein and Strong, 1951
- Cymatosyrinx arenensis Hertlein and Strong, 1951
- Cymatosyrinx bartschi Haas, 1941
- Cymatosyrinx centimata (Dall, 1889)
- Cymatosyrinx empyrosia (Dall, 1899)
- Cymatosyrinx fritellaria Dall, 1927
- Cymatosyrinx halocydne (Dall, 1919)
- Cymatosyrinx hemphilli (Stearns, 1871)
- Cymatosyrinx johnsoni Arnold, 1903
- Cymatosyrinx pagodula (Dall, 1889)
- Cymatosyrinx ricaudae (S. S. Berry, 1969)
- Cymatosyrinx splendida (Bartsch, 1934)
- Cymbovula acicularis (Lamarck, 1810)
- Cymbulia parvidentata
- Cymbulia peronii de Blainville, 1818
- Cymbulia sibogae Tesch, 1904
- Cyphoma alleneae Cate, 1973
- Cyphoma aureocinctum (Dall, 1889)
- Cyphoma emarginatum (Sowerby, 1830)
- Cyphoma gibbosum (Linnaeus, 1758)
- Cyphoma intermedium (Sowerby, 1828)
- Cyphoma lindae Petuch, 1987
- Cyphoma mcgintyi Pilsbry, 1939
- Cyphoma rhomba Cate, 1978
- Cyphoma sedlaki Cate, 1976
- Cyphoma signatum Pilsbry and McGinty, 1939
- Cypraea albuginosa Gray, 1825
- Cypraea annettae Dall, 1909
- Cypraea arabicula Lamarck, 1811
- Cypraea cervinetta Kiener, 1843
- Cypraea cervus Linnaeus, 1771
- Cypraea cinerea Gmelin, 1791
- Cypraea isabellamexicana Stearns, 1893
- Cypraea mus Linnaeus, 1758
- Cypraea nigropunctata Gray, 1828
- Cypraea robertsi Hidalgo, 1906
- Cypraea spadicea Swainson, 1836
- Cypraea spurca Linnaeus, 1758
- Cypraea surinamensis G. Perry, 1811
- Cypraea zebra Linnaeus, 1758
- Cypraecassis testiculus (Linnaeus, 1758)
- Cyprogenia aberti (Conrad, 1850)
- Cyprogenia stegaria (Rafinesque, 1820)
- Cyrenoida floridana (Dall, 1896)
- Cyrtodaria kurriana Dunker, 1861
- Cyrtodaria siliqua (Spengler, 1793)
- Cyrtonaias explicata (Morelet, 1849)
- Cyrtonaias sapperi (Ihering, 1901)
- Cyrtonaias tampicoensis (Lea, 1838)
- Cyrtonaias umbrosa (Lea, 1856)
- Cyrtopleura costata (Linnaeus, 1758)
- Cystiscus politus (Carpenter, 1857)
- Cythnia albida Carpenter, 1864
- Cythnia asteriaphila
- Dacrydium elegantulum Soot-Ryen, 1955
- Dacrydium ockelmanni Mattson and Waren, 1977
- Dacrydium pacificum Dall, 1916
- Dacrydium vitreum (Moller, 1842)
- Daedalochila auriculata (Say, 1818)
- Daedalochila auriformis (Bland, 1859)
- Daedalochila avara (Say, 1818)
- Daedalochila chisosensis (Pilsbry, 1936)
- Daedalochila delecta (Hubricht, 1976)
- Daedalochila hausmani (Jackson, 1948)
- Daedalochila hippocrepis (Pfeiffer, 1848)
- Daedalochila leporina (Gould, 1848)
- Daedalochila peninsulae (Pilsbry, 1940)
- Daedalochila polita (Pilsbry and Hinkley, 1907)
- Daedalochila postelliana (Bland, 1859)
- Daedalochila scintilla (Pilsbry and Hubricht, 1962)
- Daedalochila subclausa (Pilsbry, 1899)
- Daedalochila triodontoides (Bland, 1861)
- Daedalochila uvulifera (Shuttleworth, 1852)
- Dalium solidum Dall, 1889
- Danilia octaviana (Cantraine, 1835)
- Daphnella bartschi Dall, 1919
- Daphnella clathrata Gabb, 1865
- Daphnella corbicula Dall, 1889
- Daphnella elata Dall, 1889
- Daphnella eugrammata Dall, 1902
- Daphnella fuscoligata (Dall, 1871)
- Daphnella grundifera (Dall, 1927)
- Daphnella leucophlegma (Dall, 1881)
- Daphnella lymneiformis (Kiener, 1840)
- Daphnella margaretae Lyons, 1972
- Daphnella mazatlanica Pilsbry and Lowe, 1932
- Daphnella morra (Dall, 1881)
- Daphnella peripla (Dall, 1881)
- Daphnella pompholyx Dall, 1889
- Daphnella reticulosa Dall, 1889
- Daphnella retifera Dall, 1889
- Daphnella stegeri McGinty, 1955
- Dasyscias franzi F. G. Thompson and Hershler, 1991
- Decatopecten noduliferum (G. B. Sowerby II, 1842)
- Decipifus sixaolus Olsson and McGinty, 1958
- Decipula tenella (Loven, 1846)
- Decoriatrivia ritteri (Raymond, 1903)
- Delectopecten arces (Dall, 1913)
- Delectopecten binominatus (Hanna, 1924)
- Delectopecten bistriatus (Dall, 1916)
- Delectopecten greenlandicus (Sowerby, 1842)
- Delectopecten incongruus (Dall, 1916)
- Delectopecten tillamookensis (Arnold, 1906)
- Delectopecten vancouverensis (Whiteaves, 1893)
- Delectopecten vitreus (Gmelin, 1791)
- Delectopecten zacae
- Delonovolva aequalis Sowerby, 1832
- Delphinonaias largillierti (Philippi, 1847)
- Delphinonaias planivalvis (Morelet, 1851)
- Delphinonaias scutulata (Morelet, 1849)
- Dendostrea frons (Linnaeus, 1758)
- Dendrodoris fulva (MacFarland, 1905)
- Dendrodoris krebsii (Morch, 1863)
- Dendrodoris nigromaculata (Cockerell, 1905)
- Dendrodoris warta Ev. Marcus and Er. Marcus, 1976
- Dendronotus albopunctatus Robilliard, 1972
- Dendronotus albus MacFarland, 1966
- Dendronotus dalli Bergh, 1879
- Dendronotus diversicolor Robilliard, 1970
- Dendronotus frondosus (Ascanius, 1774)
- Dendronotus iris J. G. Cooper, 1863
- Dendronotus robustus A. E. Verrill, 1870
- Dendronotus rufus O'Donoghue, 1921
- Dendronotus subramosus MacFarland, 1966
- Dendropoma corrodens (d'Orbigny, 1842)
- Dendropoma exsertum (Dall, 1881)
- Dendropoma irregulare (d'Orbigny, 1842)
- Dendropoma lituella (Morch, 1861)
- Dendropoma rastrum (Morch, 1861)
- Dentalium agassizi Pilsbry and Sharp, 1897
- Dentalium americanum Chenu, 1843
- Dentalium antillarum D'Orbigny, 1842
- Dentalium bartletti Henderson, 1920
- Dentalium calamus Dall, 1889
- Dentalium callipeplum Dall, 1889
- Dentalium callithrix Dall, 1889
- Dentalium carduum Dall, 1889
- Dentalium ceratum (Dall, 1881)
- Dentalium circumcinctum Watson, 1879
- Dentalium dalli Pilsbry and Sharp, 1897
- Dentalium ensiculus Jeffereys, 1877
- Dentalium floridense J. B. Henderson, 1920
- Dentalium gouldii Dall, 1889
- Dentalium inversum Deshayes, 1825
- Dentalium laqueatum A. E. Verrill, 1885
- Dentalium neohexagonum Sharp and Pilsbry, 1897
- Dentalium occidentale Stimpson, 1851
- Dentalium ophiodon Dall, 1881
- Dentalium perlongum Dall, 1881
- Dentalium pilsbryi Rehder, 1942
- Dentalium pretiosum Sowerby, 1860
- Dentalium rebeccaense Henderson, 1920
- Dentalium rectius Carpenter, 1864
- Dentalium stenochizum Pilsbry and Sharp, 1897
- Dentalium taphrium Dall, 1889
- Dentalium texasianum Philippi, 1848
- Dentalium tubulatum Henderson, 1920
- Dentalium vallicolens Raymond, 1904
- Dentimargo aureocinctus (Stearns, 1872)
- Dentimargo eburneolus (Conrad, 1834)
- Dentimargo idiochila (Schwengel, 1943)
- Dentimargo reductus (Bavay, 1922)
- Dentimargo smithii (A. E. Verrill, 1885)
- Dentistyla asperrima (Dall, 1881)
- Depressiscala nautlae (Morch, 1874)
- Depressiscala nitidella (Dall, 1889)
- Depressiscala polita (G. B. Sowerby II, 1844)
- Dermatomya buttoni Dall, 1916
- Dermatomya mactroides (Dall, 1889)
- Dermomurex abyssicola (Crosse, 1865)
- Dermomurex elizabethae (McGinty, 1940)
- Dermomurex glicksteini Petuch, 1987
- Dermomurex pacei Petuch, 1988
- Dermomurex pauperculus (C. B. Adams, 1850)
- Deroceras caruanae (Pollonera, 1891)
- Deroceras hesperium Pilsbry, 1944
- Deroceras heterura Pilsbry, 1944
- Deroceras laeve (Muller, 1774)
- Deroceras monentolophus Pilsbry, 1944
- Deroceras panormitanum (Lessona and Pollonera, 1882)
- Deroceras reticulatum (Muller, 1774)
- Desmopterus pacificus Essenberg, 1919
- Desmopterus papilio Chun, 1889
- Detracia bulloides (Montagu, 1808)
- Detracia clarki Morrison, 1951
- Detracia floridana (Pfeiffer, 1856)
- Diacavolinia deblainvillei van der Spoel, Bleeker and Kobayashi, 1993
- Diacavolinia deshayesi van der Spoel, Bleeker and Kobayashi, 1993
- Diacavolinia elegans van der Spoel, Bleeker and Kobayashi, 1993
- Diacavolinia ovalis van der Spoel, Bleeker and Kobayashi, 1993
- Diacria danae van Leyen and van der Spoel, 1982
- Diacria maculata Bleeker and van der Spoel, 1988
- Diacria major (Boas, 1886)
- Diacria quadridentata (de Blainville, 1821)
- Diacria rampali Dupont, 1979
- Diacria trispinosa (de Blainville, 1821)
- Diala scopulorum
- Diala varia
- Diaphana brunnea Dall, 1919
- Diaphana californica Dall, 1919
- Diaphana globosa (Lovén, 1846)
- Diaphana hiemalis (Couthouy, 1839)
- Diaphana lactea (Jeffreys, 1877)
- Diaphana lottae Bush, 1893
- Diaphana marshalli (Sykes, 1905)
- Diaphana minuta Brown, 1827
- Diaphorodoris lirulatocauda Millen, 1985
- Diaphorodoris luteocincta (M. Sars, 1870)
- Diastoma varium (Pfeiffer, 1840)
- Diaulula sandiegensis (J. G. Cooper, 1863)
- Diaurora aurorea (Heude, 1883)
- Diaurora laeve Chen, Dai, Huang & Wu in Chen et al., 2023
- Dicata odhneri Schmekel, 1967
- Didianema pauli Pilsbry and McGinty, 1945
- Digitaria digitaria (Linnaeus, 1758)
- Dillwynella modesta Dall, 1889
- Dimya argentea Dall, 1886
- Dimya californiana S. S. Berry, 1936
- Dimya coralliotis S. S. Berry, 1944
- Dimyella starcki Moore, 1969
- Dinocardium robustum (Lightfoot, 1786)
- Diodora aguayoi Perez Farfante, 1943
- Diodora alta (C. B. Adams, 1852)
- Diodora apertura
- Diodora arcuata (G. B. Sowerby II, 1862)
- Diodora arnoldi J. H. McLean, 1966
- Diodora aspera (Rathke, 1833)
- Diodora beebei (Hertlein and Strong, 1951)
- Diodora bermudensis (Dall and Bartsch, 1911)
- Diodora cayenensis (Lamarck, 1822)
- Diodora crenifera (Sowerby. 1835)
- Diodora dysoni (Reeve, 1850)
- Diodora fluviana (Dall, 1889)
- Diodora fragilis Farfante and Henriquez, 1947
- Diodora fusilla S. S. Berry, 1959
- Diodora graeca (Linnaeus, 1758)
- Diodora granifera
- Diodora habanensis Christiaens, 1975
- Diodora harrassowitzi Von Ihering, 1927
- Diodora inaequalis (Sowerby, 1835)
- Diodora jaumei Aguayo and Rehder, 1936
- Diodora listeri (d'Orbigny, 1842)
- Diodora meta (von Ihering, 1927)
- Diodora minuta (Lamarck, 1822)
- Diodora murina Arnold, 1903
- Diodora panamensis (Sowerby, 1835)
- Diodora patagonica Orbigny, 1847
- Diodora saturnalis (Carpenter, 1864)
- Diodora sayi (Dall, 1889)
- Diodora tanneri (A. E. Verrill, 1882)
- Diodora variegata G. B. Sowerby II, 1862
- Diodora viridula (Lamarck, 1822)
- Diodora wetmorei Perez Farfante, 1945
- Diplodon aethiops (Lea, 1860)
- Diplodon berthae Ortmann, 1921
- Diplodon besckeanus (Dunker, 1848)
- Diplodon burroughiana (Lea, 1834)
- Diplodon caipira (Ihering, 1893)
- Diplodon charruana (d'Orbigny, 1835)
- Diplodon chilensis (Gray, 1828)
- Diplodon delodontus (Lamarck, 1819)
- Diplodon dunkerianus (Lea, 1856)
- Diplodon ellipticus (Spix & Wagner, 1827)
- Diplodon expansus (Küster, 1856)
- Diplodon flucki Morrison, 1943
- Diplodon fluctiger (Lea, 1859)
- Diplodon fontainianus (d'Orbigny, 1835)
- Diplodon funebralis (Lea, 1860)
- Diplodon granosus (Bruguière, 1792)
- Diplodon grata (Lea, 1860)
- Diplodon greeffeanus (Ihering, 1893)
- Diplodon guaporensis Bonetto & Tassara, 1987
- Diplodon guaranianus (d'Orbigny, 1835)
- Diplodon hildae Ortmann, 1921
- Diplodon hylaea (d'Orbigny, 1835)
- Diplodon iheringi Simpson, 1914
- Diplodon imitator Ortmann, 1921
- Diplodon koseritzi (Clessin, 1888)
- Diplodon losadae Haas, 1966
- Diplodon martensi (Ihering, 1893)
- Diplodon multistriatus (Lea, 1831)
- Diplodon obsolescens F. Baker, 1913
- Diplodon parallelopipedon (Lea, 1834)
- Diplodon paranensis (Lea, 1834)
- Diplodon parodizi Bonetto, 1962
- Diplodon paulista (Ihering, 1893)
- Diplodon peraeformis (Lea, 1860)
- Diplodon pfeifferi (Dunker, 1848)
- Diplodon piceus (Lea, 1860)
- Diplodon rhombea (Spix & Wagner, 1827)
- Diplodon rhuacoicus (d'Orbigny, 1835)
- Diplodon rotundus (Spix & Wagner, 1827)
- Diplodon solidulus (Philippi, 1869)
- Diplodon solisianus (d'Orbigny, 1835)
- Diplodon suavidica (Lea, 1856)
- Diplodon uruguayensis (Lea, 1860)
- Diplodon variabilis (Maton, 1811)
- Diplodon vicarius Ortmann, 1921
- Diplodon voltzi Vernhout, 1914
- Diplodon wymanii (Lea, 1860)
- Diplodonta aleutica Dall, 1901
- Diplodonta candeana (d'Orbigny, 1842)
- Diplodonta cornea (Reeve, 1850)
- Diplodonta discrepans (Carpenter, 1857)
- Diplodonta impolita S. S. Berry, 1953
- Diplodonta inezensis (Hertlein and Strong, 1947)
- Diplodonta lupina Brocchi, 1814
- Diplodonta notata Dall and Simpson, 1901
- Diplodonta nucleiformis Wagner, 1838
- Diplodonta obliqua Philippi, 1846
- Diplodonta orbella (Gould, 1851)
- Diplodonta punctata (Say, 1822)
- Diplodonta rotundata
- Diplodonta semiaspera Philippi, 1836
- Diplodonta sericata (Reeve, 1850)
- Diplodonta soror C. B. Adams, 1852
- Diplodonta subglobosa C. B. Adams, 1852
- Diplodonta torrelli Jeffreys, 1976
- Diplodonta venezuelensis Dunker, 1848
- Diplodonta verrilli Dall, 1900
- Diplodontites cookei Marshall, 1922
- Diplodontites olssoni Pilsbry, 1933
- Diplodontites pilsbryana Olsson & Wurtz, 1951
- Diplosolenodes occidentale (Guilding, 1825)
- Diplothyra smithii Tryon, 1862
- Dirona albolineata MacFarland, 1905
- Dirona aurantia Hurst, 1966
- Dirona picta MacFarland, 1905
- Discodoris alba White, 1952
- Discodoris aurila Marcus and Marcus, 1967
- Discodoris evelinae Er. Marcus, 1955
- Discodoris heathi MacFarland, 1905
- Discodoris hedgpethi Marcus and Marcus, 1959
- Discodoris mavis Marcus and Marcus, 1967
- Discodoris millegrana (Adler and Hancock, 1854)
- Discodoris mortenseni Ev. Marcus and Er. Marcus, 1963
- Discodoris notha Bergh, 1877
- Discodoris phoca Ev. Marcus and Er. Marcus, 1967
- Discodoris purcina Ev. Marcus and Er. Marcus, 1967
- Discodoris pusae Er. Marcus, 1955
- Discodoris voniheringi MacFarland, 1909
- Discomya radulosa (Drouët & Chaper, 1892)
- Disconaias conchos Taylor, 1997
- Disconaias disca (Lea, 1838)
- Disconaias fimbriata (Frierson, 1907)
- Disconaias novileonis (Pilsbry, 1910)
- Disconaias panacoensis (von dem Busch in Philippi, 1843)
- Disconaias purpuriata (Say, 1831)
- Discotectonica discus (Philippi, 1844)
- Discoteuthis discus Young and Roper, 1969
- Discoteuthis laciniosa Young and Roper, 1969
- Discurria insessa (Hinds, 1842)
- Discus brunsoni S. S. Berry, 1955
- Discus bryanti (Harper, 1881)
- Discus catskillensis (Pilsbry, 1896)
- Discus clappi (Pilsbry, 1924)
- Discus macclintocki (F. C. Baker, 1928)
- Discus marmorensis H. B. Baker, 1932
- Discus nigrimontanus (Pilsbry, 1924)
- Discus patulus (Deshayes, 1830)
- Discus rotundatus (Muller, 1774)
- Discus selenitoides (Pilsbry, 1890)
- Discus shimekii (Pilsbry, 1890)
- Discus whitneyi (Newcomb, 1864)
- Distorsio clathrata (Lamarck, 1816)
- Distorsio constricta Broderip, 1833
- Distorsio decussata (Valenciennes, 1832)
- Distorsio floridana Gardner, 1947
- Distorsio perdistorta Fulton, 1938
- Divalinga quadrisulcata (d'Orbigny, 1842)
- Divaricella angulifera (Orbigny, 1842)
- Divaricella dentata (W. Wood, 1815)
- Divaricella divaricata
- Divaricella quadrisulcata (d'Orbigny, 1842)
- Divariscintilla cordiformis P. M. Mikkelsen and Bieler, 1992
- Divariscintilla luteocrinita P. M. Mikkelsen and Bieler, 1992
- Divariscintilla octotentaculata P. M. Mikkelsen and Bieler, 1992
- Divariscintilla troglodytes P. M. Mikkelsen and Bieler, 1989
- Divariscintilla yoyo P. M. Mikkelsen and Bieler, 1989
- Dolabrifera dolabrifera (Rang, 1828)
- Dolicholatirus pauli (McGinty, 1955)
- Donax californicus Conrad, 1837
- Donax denticulatus Linnaeus, 1758
- Donax fossor Say, 1822
- Donax gouldii Dall, 1921
- Donax roemeri Philippi, 1849
- Donax texasianus Philippi, 1847
- Donax variabilis Say, 1822
- Donax variegatus
- Donax vittatus
- Dondersia californicum Heath, 1911
- Dondice occidentalis (Engel, 1925)
- Doridella batava (Kerbert, 1886)
- Doridella burchi Ev. Marcus and Er. Marcus, 1967
- Doridella depressus Balch, 1899
- Doridella obscura A. E. Verrill, 1870
- Doridella steinbergae (Lance, 1962)
- Doridium pusum Marcus and Marcus, 1967
- Doridunculus echinulatus G. O. Sars, 1878
- Doriopsilla albopunctata (J. G. Cooper, 1863)
- Doriopsilla areolata (Bergh, 1880)
- Doriopsilla fedalae Pruvot-fol. 1953
- Doriopsilla janaina Marcus and Marcus, 1967
- Doriopsilla leia Er. Marcus, 1961
- Doriopsilla nigromaculata (Cockerell In Coc. and Eliot, 1905)
- Doriopsilla pelseneeri Oliviera, 1895
- Doriopsilla pharpa Er. Marcus, 1961
- Doriopsilla rowena Marcus and Marcus, 1967
- Doris nobilis Odhner, 1907
- Doris odonoghuei Steinberg, 1963
- Doris sticta (Iredale and Donoghue, 1923)
- Doris verrucosa Linnaeus, 1758
- Dorsopsis taningi Thore, 1949
- Dorymenia sarsii (Koren and Danielssen, 1877)
- Dosidicus gigas (D'Orbigny, 1835 in 1834-1847)
- Dosinia discus (Reeve, 1850)
- Dosinia elegans (Conrad, 1843)
- Dosinia exoleta
- Dosinia lupinus
- Doto amyra Er. Marcus, 1961
- Doto caramella Er. Marcus, 1957
- Doto chica Ev. Marcus and Er. Marcus, 1960
- Doto cindyneutes Bouchet, 1977
- Doto columbiana O'Donoghue, 1921
- Doto coronata (Gmelin, 1791)
- Doto crassicornis M. Sars, 1870
- Doto cuspidata
- Doto divae Ev. Marcus and Er. Marcus, 1960
- Doto doerga Ev. Marcus and Er. Marcus, 1963
- Doto dunnei Lemche, 1976
- Doto eireana Lemche, 1976
- Doto formosa A. E. Verrill, 1875
- Doto fragilis (Forbes, 1838)
- Doto hydrallmaniae Marrow
- Doto hystrix Picton and Brown, 1981
- Doto koenneckeri Lemche, 1976
- Doto kya Er. Marcus, 1961
- Doto lancei Ev. Marcus and Er. Marcus, 1967
- Doto lemchei Ortea and Urgorri, 1978
- Doto maculata (Montagu, 1804)
- Doto millbayana Lemche, 1976
- Doto nigra Eliot, 1910
- Doto onusta Hesse, 1872
- Doto papillifera Eliot, 1910
- Doto pinnatifida
- Doto pita Er. Marcus, 1955
- Doto sarsiae Marrow, Thrope, Picton, 1992
- Doto tuberculata Lemche, 1976
- Doto uva Er. Marcus, 1955
- Doto varians (MacFarland, 1966)
- Drechselia danae Joubin, 1931
- Dreissena bugensis Andrusov, 1897
- Dreissena polymorpha (Pallas, 1771)
- Drepanotrema aeruginosus (Morelet, 1851)
- Drepanotrema cimex (Moricand, 1839)
- Drepanotrema kermatoides (d'Orbigny, 1835)
- Drillia acrybia (Dall, 1889)
- Drillia acurugata Dall, 1890
- Drillia albicoma Dall, 1889
- Drillia amblytera (Bush, 1893)
- Drillia asaedai (Hertlein and Strong, 1951)
- Drillia canna Dall, 1889
- Drillia cydia (Bartsch, 1943)
- Drillia detecta (Dall, 1881)
- Drillia dolana Dall, 1927
- Drillia fancherae (Dall, 1903)
- Drillia fanoa Dall, 1927
- Drillia gibbosa (Born, 1778)
- Drillia inimica Dall, 1927
- Drillia interpleura Dall and Simpson, 1901
- Drillia orellana Dall, 1927
- Drillia pharcida (Dall, 1889)
- Drillia pilsbryi (Bartsch, 1950)
- Drillia ponciana Dall and Simpson, 1901
- Drillia solida C. B. Adams, 1830
- Drillia unimaculata (Sowerby, 1834)
- Drillia wolfei Tippett, 1995
- Drilliola loprestiana (Calcara, 1841)
- Drilliola pruina (Watson, 1881)
- Dromus dromas (Lea, 1834)
- Drupinia grossularia (Röding, 1798)
- Dryachloa dauca F. G. Thompson and H. G. Lee, 1980
- Drymaeus dominicus (Reeve, 1850)
- Drymaeus dormani (W. G. Binney, 1857)
- Drymaeus multilineatus (Say, 1825)
- Echininus cummingi
- Echininus nodulosus (Pfeiffer, 1839)
- Echyridella aucklandica (Gray, 1843)
- Echyridella menziesii (Gray, 1843)
- Echyridella onekaka Fenwick & Marshall, 2006
- Ecrobia truncata (Vanatta, 1924)
- Ecrobia ventrosa (Montagu, 1803)
- Egea inermis Joubin, 1933
- Elachisina floridana (Rehder, 1943)
- Elachisina globuloides (Waren, 1972)
- Elachisina grippi Dall, 1918
- Elaeocyma empyrosia (Dall, 1899)
- Eledone caparti Adam, 1950
- Eledone cirrhosa (Lamarck, 1798)
- Eledone gaucha Haimovici, 1988
- Eledone massyae Voss, 1964
- Eledone microsicya (Rochebrune, 1884)
- Eledone moschata (Lamarck, 1798)
- Eledone nigra (Hoyle, 1910)
- Eledone palari Lu and Stranks, 1992
- Eledone thysanophora Voss, 1962
- Eledonella pygmaea Verrill, 1884
- Eledonella sheardi Allan, 1945
- Eleutheromenia sierra (Pruvot, 1890)
- Elimia acuta (Lea, 1831)
- Elimia alabamensis (Lea, 1861)
- Elimia albanyensis (Lea, 1864)
- Elimia ampla (Anthony, 1854)
- Elimia annae Mihalcik and F. G. Thompson, 2002
- Elimia annettae (Goodrich, 1941)
- Elimia arachnoidea (Anthony, 1854)
- Elimia aterina (Lea, 1863)
- Elimia athearni (Clench and Turner, 1956)
- Elimia bellacrenata (Haldeman, 1841)
- Elimia bellula (Lea, 1861)
- Elimia boykiniana (Lea, 1840)
- Elimia brevis (Reeve, 1860)
- Elimia broccata F. G. Thompson, 2000
- Elimia buffyae Mihalcik and F. G. Thompson, 2002
- Elimia bullula (Lea, 1861)
- Elimia caelatura (Reeve, 1860)
- Elimia cahawbensis (Lea, 1861)
- Elimia cancellata (Say, 1829)
- Elimia capillaris (Lea, 1861)
- Elimia carinifera (Lamarck, 1822)
- Elimia carinocostata (Lea, 1854)
- Elimia catenaria (Say, 1822)
- Elimia catenoides (Lea, 1842)
- Elimia chiltonensis (Goodrich, 1941)
- Elimia christyi (Lea, 1862)
- Elimia clara (Anthony, 1854)
- Elimia clausa (Lea, 1861)
- Elimia clavaeformis (Lea, 1841)
- Elimia clenchi (Goodrich, 1924)
- Elimia cochliaris (Lea, 1868)
- Elimia comalensis (Pilsbry, 1890)
- Elimia comma (Conrad, 1834)
- Elimia costifera (Reeve, 1861)
- Elimia crenatella (Lea, 1860)
- Elimia curreyana (Lea, 1841)
- Elimia cylindracea (Conrad, 1834)
- Elimia darwini Mihalcik and F. G. Thompson, 2002
- Elimia dickinsoni (Clench and Turner, 1956)
- Elimia dislocata (Reeve, 1861)
- Elimia dooleyensis (Lea, 1862)
- Elimia ebenum (Lea, 1841)
- Elimia edgariana (Lea, 1841)
- Elimia exusta Mihalcik and F. G. Thompson, 2002
- Elimia fascinans (Lea, 1861)
- Elimia flava (Lea, 1862)
- Elimia floridensis (Reeve, 1860)
- Elimia fusiformis (Lea, 1861)
- Elimia gibbera (Goodrich, 1922)
- Elimia glarea Mihalcik and F. G. Thompson, 2002
- Elimia godwini F. G. Thompson, 2000
- Elimia hartmaniana (Lea, 1861)
- Elimia haysiana (Lea, 1843)
- Elimia hydeii (Conrad, 1834)
- Elimia impressa (Lea, 1841)
- Elimia inclinans (Lea, 1862)
- Elimia induta (Lea, 1862)
- Elimia interrupta (Haldeman, 1840)
- Elimia interveniens (Lea, 1862)
- Elimia jonesi (Goodrich, 1936)
- Elimia lachryma (Reeve, 1861)
- Elimia laeta (Jay, 1839)
- Elimia laqueata (Say, 1829)
- Elimia lecontiana (Lea, 1841)
- Elimia livescens (Menke, 1830)
- Elimia macglameriana (Goodrich, 1936)
- Elimia melanoides (Conrad, 1834)
- Elimia mihalcikae F. G. Thompson, 2000
- Elimia modesta (Lea, 1845)
- Elimia mutabilis (Lea, 1862)
- Elimia nassula (Conrad, 1834)
- Elimia olivula (Conrad, 1834)
- Elimia ornata (Lea, 1868)
- Elimia paupercula (Lea, 1862)
- Elimia perstriata (Lea, 1852)
- Elimia pilsbryi (Goodrich, 1927)
- Elimia plicatastriata (Wetherby, 1876)
- Elimia porrecta (Lea, 1863)
- Elimia potosiensis (Lea, 1841)
- Elimia proxima (Say, 1825)
- Elimia pupaeformis (Lea, 1864)
- Elimia pupoidea (Anthony, 1854)
- Elimia pybasii (Lea, 1862)
- Elimia pygmaea (H. H. Smith, 1936)
- Elimia semicarinata (Say, 1829)
- Elimia showalterii (Lea, 1861)
- Elimia simplex (Say, 1825)
- Elimia striatula (Lea, 1842)
- Elimia strigosa (Lea, 1841)
- Elimia symmetrica (Haldeman, 1841)
- Elimia taitiana (Lea, 1841)
- Elimia teres (Lea, 1841)
- Elimia teretria F. G. Thompson, 2000
- Elimia timida (Goodrich, 1942)
- Elimia troostiana (Lea, 1838)
- Elimia ucheensis (Lea, 1862)
- Elimia vanhyningiana (Goodrich, 1921)
- Elimia vanuxemiana (Lea, 1843)
- Elimia varians (Lea, 1861)
- Elimia variata (Lea, 1861)
- Elimia viennaensis (Lea, 1862)
- Elimia virginica (Gmelin, 1791)
- Ellipsaria lineolata (Rafinesque, 1820)
- Elliptio ahenea (Lea, 1845)
- Elliptio angustata (Lea, 1831)
- Elliptio arca (Conrad, 1834)
- Elliptio arctata (Conrad, 1834)
- Elliptio chipolaensis (Walker, 1905)
- Elliptio cistellaeformis (Lea, 1863)
- Elliptio complanata (Lightfoot, 1786)
- Elliptio congaraea (Lea, 1831)
- Elliptio crassidens (Lamarck, 1819)
- Elliptio dariensis (Lea, 1842)
- Elliptio downiei (Lea, 1858)
- Elliptio fisheriana (Lea, 1838)
- Elliptio folliculata (Lea, 1838)
- Elliptio fraterna (Lea, 1852)
- Elliptio fumata (Lea, 1857)
- Elliptio hopetonensis (Lea, 1838)
- Elliptio icterina (Conrad, 1834)
- Elliptio jayensis (Lea, 1838)
- Elliptio lanceolata (Lea, 1828)
- Elliptio marsupiobesa Fuller, 1972
- Elliptio mcmichaeli Clench & Turner, 1956
- Elliptio monroensis (Lea, 1843)
- Elliptio nigella (Lea, 1852)
- Elliptio occulta (Lea, 1843)
- Elliptio producta (Conrad, 1836)
- Elliptio pullata (Lea, 1856)
- Elliptio purpurella (Lea, 1857)
- Elliptio roanokensis (Lea, 1838)
- Elliptio shepardiana (Lea, 1834)
- Elliptio spinosa (Lea, 1836)
- Elliptoideus sloatianus (Lea, 1840)
- Ellobium dominicense (Ferussac, 1821)
- Ellobium pellucens (Menke, 1830)
- Elongaria orientalis (Lea, 1840)
- Elongaria trompi (Drouët & Chaper, 1892)
- Elysia canguzua Er. Marcus, 1955
- Elysia catulus (Gould, 1870)
- Elysia chlorotica Gould, 1870
- Elysia cornigera Nuttall, 1989
- Elysia crispata Mørch, 1863
- Elysia evelinae Er. Marcus, 1957
- Elysia hedgpethi Er. Marcus, 1961
- Elysia ornata (Swainson, 1840)
- Elysia papillosa A. E. Verrill, 1901
- Elysia patina Ev. Marcus, 1980
- Elysia picta A. E. Verrill, 1901
- Elysia serca Er. Marcus, 1955
- Elysia subornata A. E. Verrill, 1901
- Elysia tuca Ev. Marcus and Er. Marcus, 1967
- Elysia viridis
- Emarcusia morroensis Roller, 1972
- Emarginula conica Lamarck. 1801
- Emarginula crassa Sowerby, 1812
- Emarginula dentigera Heilprin, 1889
- Emarginula fissura
- Emarginula nordica Perez Farfante, 1947
- Emarginula phrixodes Dall, 1927
- Emarginula pumila (A. Adams, 1852)
- Emarginula sicula J. E. Gray, 1825
- Emarginula tuberculosa Libassi, 1859
- Emarginula velascoensis
- Embletonia pulchra (Alder and Hancock, 1944)
- Empleconia vaginata (Dall, 1891)
- Enaeta cumingii (Broderip, 1882)
- Enaeta cylleniformis (G. B. Sowerby I, 1844)
- Enaeta guildingi (Sowerby, 1844)
- Enaeta reevei (Dall, 1907)
- Engina caribbaea Bartsch and Rehder, 1939
- Engina corinnae Crovo, 1971
- Engina strongi Pilsbry and Lowe, 1932
- Engina turbinella (Kiener, 1835)
- Engoniophos unicinctus (Say, 1825)
- Ennucula linki (Dall, 1916)
- Ennucula tenuis (Montagu, 1808)
- Enoploteuthis anapsis Roper, 1964
- Enoploteuthis chunii Ishikawa, 1914
- Enoploteuthis galaxias Berry, 1918
- Enoploteuthis higginsi Burgess, 1982
- Enoploteuthis jonesi Burgess, 1982
- Enoploteuthis leptura (Leach, 1817)
- Enoploteuthis obliqua Burgess, 1982
- Enoploteuthis octolineata Burgess, 1982
- Enoploteuthis reticulata Rancurel, 1970
- Enoploteuthis semilineata Alexeyev, 1994
- Ensidens dugasti (Morlet, 1892)
- Ensidens ingallsianus (Lea, 1852)
- Ensidens jaculus (Rochebrune, 1882)
- Ensidens sagittarius (Lea, 1856)
- Ensidens spiculus Pfeiffer, Graf, Cummings & Page, 2021
- Ensidens telus Pfeiffer, Graf, Cummings & Page, 2021
- Ensis americanus (Gould, 1870)
- Ensis arcuatus
- Ensis californicus Dall, 1899
- Ensis directus Conrad, 1843
- Ensis ensis (Linnaeus, 1758)
- Ensis magnus Schumacher, 1817
- Ensis minor Dall, 1900
- Ensis myrae S. S. Berry, 1953
- Ensis siliqua
- Ensitellops pilsbryi (Dall, 1899)
- Ensitellops protexta (Conrad, 1841)
- Ensitellops tabula Olsson and Harbison, 1953
- Entalina platomodes Watson, 1879
- Entalina quinquangularis (Forbes, 1843)
- Entalinopsis callithrix (Dall, 1889)
- Entemnotrochus adansonianus (Crosse and P. Fischer, 1861)
- Enteroctopus dofleini (Wülker, 1910)
- Enteroctopus juttingi Robson, 1929
- Enteroctopus megalocyathus (Gould, 1852)
- Enteroctopus membranaceus Rochebrune and Mabille, 1889
- Enteroxenos parastichopoli (Tikasingh, 1961)
- Entocolax ludwigii Voigt, 1888
- Entoconcha mirabilis J. Muller, 1852
- Entodesma beana (d'Orbigny, 1842)
- Entodesma navicula (A. Adams and Reeve, 1850)
- Entodesma pictum (G. B. Sowerby I, 1834)
- Entodesma saxicola (Baird, 1863)
- Entovalva perrieri (Malard, 1903)
- Eobania vermiculata (Muller, 1774)
- Eogonatus tinro (Nesis, 1972)
- Epicynia devexa Keen, 1946
- Epicynia inornata (d'Orbigny, 1842)
- Epicynia multicarinata (Dall, 1889)
- Epilepton clarkiae (Clark, 1852)
- Epilucina californica (Conrad, 1837)
- Epioblasma ahlstedti Jones & Neves, 2010
- Epioblasma arcaeformis (Lea, 1831)
- Epioblasma aureola Jones & Neves, 2010
- Epioblasma biemarginata (Lea, 1857)
- Epioblasma brevidens (Lea, 1831)
- Epioblasma capsaeformis (Lea, 1834)
- Epioblasma cincinnatiensis (Lea, 1840)
- Epioblasma curtisii (Frierson & Utterback in Utterback, 1916)
- Epioblasma flexuosa (Rafinesque, 1820)
- Epioblasma florentina (Lea, 1857)
- Epioblasma gubernaculum (Reeve, 1865)
- Epioblasma haysiana (Lea, 1834)
- Epioblasma lenior (Lea, 1842)
- Epioblasma lewisii (Walker, 1910)
- Epioblasma metastriata (Conrad, 1838)
- Epioblasma obliquata (Rafinesque, 1820)
- Epioblasma othcaloogensis (Lea, 1857)
- Epioblasma penita (Conrad, 1834)
- Epioblasma perobliqua (Conrad, 1836)
- Epioblasma personata (Say, 1829)
- Epioblasma propinqua (Lea, 1857)
- Epioblasma rangiana (Lea, 1838)
- Epioblasma sampsonii (Lea, 1862)
- Epioblasma stewardsonii (Lea, 1852)
- Epioblasma torulosa (Rafinesque, 1820)
- Epioblasma triquetra (Rafinesque, 1820)
- Epioblasma turgidula (Lea, 1858)
- Epioblasma walkeri (Wilson & H. W. Clark, 1914)
- Episcynia devexa Keen, 1946
- Episcynia inornata (d'Orbigny, 1842)
- Episiphon didymus (Watson, 1879)
- Episiphon sowerbyi (Guilding, 1834)
- Epitonium albidum (d'Orbigny, 1842)
- Epitonium angulatum (Say, 1830)
- Epitonium apiculatum (Dall, 1889)
- Epitonium babylonia (Dall, 1889)
- Epitonium blainei Clench and Turner, 1953
- Epitonium borealis
- Epitonium caamanoi Dall and Bartsch, 1910
- Epitonium candeanum (d'Orbigny, 1842)
- Epitonium catalinae Dall, 1908
- Epitonium celesti (Aradas, 1854)
- Epitonium championi Clench and Turner, 1952
- Epitonium clathratulum
- Epitonium clathrum Linnaeus, 1758
- Epitonium columbianum Dall, 1917
- Epitonium dallianum (A. E. Verrill and S. Smith, 1880)
- Epitonium denticulatum (G. B. Sowerby II, 1844)
- Epitonium echinaticosta (d'Orbigny, 1842)
- Epitonium eulita (Dale and Simpson, 1901)
- Epitonium foliaceicosta (d'Orbigny, 1842)
- Epitonium fractum Dall, 1927
- Epitonium frielei (Dall, 1889)
- Epitonium greenlandicum (G. Perry, 1811)
- Epitonium humphreysii (Kiener, 1838)
- Epitonium indianorum (Carpenter, 1864)
- Epitonium krebsii (Morch, 1874)
- Epitonium lamellosum (Lamarck, 1822)
- Epitonium lowei (Dall, 1906)
- Epitonium matthewsae Clench and Turner, 1952
- Epitonium multistriatum (Say, 1826)
- Epitonium nautlae Morch, 1874
- Epitonium nitidella (Dall, 1889)
- Epitonium nitidum
- Epitonium novangliae (Couthouy, 1838)
- Epitonium occidentale (Nyst, 1871)
- Epitonium pandion Clench and Turner, 1952
- Epitonium phymanthi Robertson, 1994
- Epitonium polacium (Dall, 1889)
- Epitonium pourtalesii (A. E. Verrill and S. Smith, 1880)
- Epitonium rupicola (Kurtz, 1860)
- Epitonium rushii (Dall, 1889)
- Epitonium sawinae (Dall, 1903)
- Epitonium sericifilum (Dall, 1889)
- Epitonium striatissimum (di Monterosato, 1878)
- Epitonium tollini Bartsch, 1938
- Epitonium turtonae
- Epitonium unifasciatum (G. B. Sowerby II, 1844)
- Erato albescens Dall, 1905
- Erato columbella Menke, 1847
- Erato maugeriae Gray, 1823
- Erato vitellina (Hinds, 1844)
- Erato voluta
- Eratoidea hematita (Kiener, 1834)
- Ercolania boodleae (Baba, 1938)
- Ercolania coerulea Trinchese, 1893
- Ercolania funerea (A. Costa, 1867)
- Ercolania fuscata (Gould, 1870)
- Eremarionta aquaealbae S. S. Berry, 1922
- Eremarionta brunnea (Willett, 1935)
- Eremarionta greggi W. B. Miller, 1981
- Eremarionta immaculata (Willett, 1937)
- Eremarionta indioensis (Yates, 1890)
- Eremarionta millepalmarum (S. S. Berry, 1930)
- Eremarionta morongoana (S. S. Berry, 1929)
- Eremarionta newcombi Pilsbry and Ferriss, 1923
- Eremarionta orocopia (Willett, 1939)
- Eremarionta rowelli (Newcomb, 1865)
- Eremariontoides argus (Edson, 1912)
- Eremopyrgus eganensis Hershler, 1999
- Erginus apicinus (Dall, 1879)
- Erginus moskalevi (Golikov and Kussakin, 1972)
- Erginus puniceus Lindberg, 1988
- Erginus rubellus (Fabricius, 1780)
- Erginus sybariticus (Dall, 1871)
- Erinna aulacospira (Ancey, 1899)
- Erinna newcombi Adams and Adams, 1855
- Erosaria acicularis (Gmelin, 1791)
- Ersilia stancyki Waren, 1980
- Ervilia bisculpta
- Ervilia castanea (Montagu, 1803)
- Ervilia concentrica (Holmes, 1860)
- Ervilia nitens (Montagu, 1808)
- Ervilia sandwichensis
- Ervilia subcancellata E. A. Smith, 1885
- Erycina balliana Dall, 1916
- Erycina coronata Dall, 1916
- Erycina emmonsi Dall, 1899
- Erycina linella Dall, 1899
- Erycina periscopiana Dall, 1899
- Etheria elliptica Lamarck, 1807
- Euaxoctopus panamensis Voss, 1971
- Euaxoctopus pillsburyae Voss, 1975
- Euaxoctopus scalenus (Hoyle, 1904)
- Eubela calyx (Dall, 1889)
- Eubela limacina (Dall, 1881)
- Eubela mcgintyi Schwengel, 1943
- Eubela sofia
- Eubranchus columbianus (O'Donoghue, 1922)
- Eubranchus coniclus (Er. Marcus, 1958)
- Eubranchus doriae (Trinchese, 1874)
- Eubranchus exiguus (Alder and Hancock, 1848)
- Eubranchus farrani (Alder and Hancock, 1844)
- Eubranchus misakiensis Baba, 1960
- Eubranchus olivaceus (O'Donoghue, 1922)
- Eubranchus pallidus (Alder and Hancock, 1842)
- Eubranchus rustyus (Er. Marcus, 1961)
- Eubranchus sanjuanensis Roller, 1972
- Eubranchus steinbecki Behrens, 1987
- Eubranchus tricolor Forbes, 1838
- Eubranchus vittatus (Alder and Hancock, 1842)
- Euchelus corbis (Dall, 1889)
- Euchelus corrugatus
- Euchelus dentiferus (Dall, 1889)
- Euchelus eucastus (Dall, 1889)
- Euchelus guttarosea Dall, 1889
- Euchelus quadricarinatus (Holten, 1802)
- Euchemotrema cheatumi (R. W. Fullington, 1974)
- Euchemotrema fasciatum (Pilsbry, 1940)
- Euchemotrema fraternum (Say, 1824)
- Euchemotrema hubrichti (Pilsbry, 1940)
- Euchemotrema leai (A. Binney, 1841)
- Euchemotrema wichitorum (Branson, 1972)
- Euciroa elegantissima (Dall, 1881)
- Eucithara angiostoma
- Eucithara pusilla
- Eucleoteuthis luminosa (Sasaki, 1915)
- Euconulus chersinus (Say, 1821)
- Euconulus dentatus (Sterki, 1893)
- Euconulus fulvus (Muller, 1774)
- Euconulus polygyratus (Pilsbry, 1899)
- Euconulus trochulus (Reinhardt, 1883)
- Eucrassatella fluctuata (Carpenter, 1864)
- Eucrassatella speciosa (A. Adams, 1852)
- Eudolium bairdii (A. E. Verrill and S. Smith, 1881)
- Eudolium crosseanum (di Monterosato, 1869)
- Eudolium thompsoni McGinty, 1955
- Euglandina rosea (Ferussac, 1818)
- Euglandina singleyana (W. G. Binney, 1892)
- Euglandina texasiana (Pfeiffer, 1857)
- Eulima alaskensis (Bartsch, 1917)
- Eulima almo (Bartsch, 1917)
- Eulima auricincta (Abbott, 1958)
- Eulima bifasciata D'Orbigny, 1842
- Eulima fulvocincta C. B. Adams, 1850
- Eulima hemphillii (Dall, 1884)
- Eulima patula Dall and Simpson, 1901
- Eulima raymondi Rivers, 1904
- Eulima schwengelae (Bartsch, 1938)
- Eulimastoma engonium (Bush, 1885)
- Eulimastoma teres (Bush, 1885)
- Eulimastoma weberi (Morrison, 1965)
- Eulimella nitidissima
- Eulimella polita (A. E. Verrill, 1872)
- Eulimella smithii (A. E. Verrill, 1880)
- Eulimostraca hemphilli
- Eulimostraca subcarinata (d'Orbigny, 1842)
- Eulithidium affine (C. B. Adams, 1850)
- Eulithidium bellum (M. Smith, 1937)
- Eulithidium comptum (Gould, 1855)
- Eulithidium pterocladicum (Robertson, 1958)
- Eulithidium pulloide (Carpenter, 1864)
- Eulithidium rubrilineatum (Strong, 1928)
- Eulithidium substriatum (Carpenter, 1864)
- Eulithidium thalassicola (Robertson, 1958)
- Eumetula arctica (Morch, 1857)
- Eupera cubensis (Prime, 1865)
- Eupera singleyi Pilsbry
- Eupleura caudata (Say, 1822)
- Eupleura grippi Dall, 1911
- Eupleura muriciformis (Broderip, 1833)
- Eupleura nitida (Broderip, 1833)
- Eupleura pectinata (Hinds, 1844)
- Eupleura stimpsoni Dall
- Eupleura sulcidentata Dall, 1890
- Euprymna albatrossae Voss, 1962
- Euprymna berryi Sasaki, 1929
- Euprymna hoylei Adam, 1986
- Euprymna hyllebergi Nateewathana, 1997
- Euprymna morsei (Verrill, 1881 in 1880-1881)
- Euprymna penares (Gray, 1849)
- Euprymna phenax Voss, 1962
- Euprymna pusilla (Pfeffer, 1884)
- Euprymna schneehageni (Pfeffer, 1884)
- Euprymna scolopes Berry, 1913
- Euprymna stenodactyla (Grant, 1833)
- Euprymna tasmanica (Pfeffer, 1884)
- Eurynia dilatata (Rafinesque, 1820)
- Euspira catena (da Costa, 1778)
- Euspira heros (Say, 1822)
- Euspira immaculata (Totten, 1835)
- Euspira levicula (A. E. Verrill, 1880)
- Euspira lewisii (Gould, 1847)
- Euspira montagui (Forbes, 1838)
- Euspira nana (Møller, 1842)
- Euspira pallida (Broderip and G. B. Sowerby I, 1829)
- Euspira pulchella (Risso, 1826)
- Euspira tenuis (Récluz, 1850)
- Euspira triseriata (Say, 1826)
- Euvola diegensis (Dall, 1898)
- Euvola raveneli (Dall, 1898)
- Euvola vogdesi (R. Arnold, 1906)
- Euvola ziczac (Linnaeus, 1758)
- Evalea amchitkana (Dall and Bartsch, 1909)
- Exilioidea kelseyi (Dall, 1908)
- Exilioidea rectirostris (Carpenter, 1864)
- Fabella pilsbryi (Dall, 1899)
- Facelina annulicornis (Chamisso and Eysenhardt, 1821)
- Facelina auriculata (O. F. Muller, 1806)
- Facelina bostoniensis (Couthouy, 1838)
- Facelina drummondi
- Facelina dubia Pruvot-fol, 1949
- Facelina stearnsi Cockerell, 1901
- Falcidens caudatus
- Falcidens crossotus Salvini-Plawen, 1968
- Falcidens hartmanae (Schwabl, 1961)
- Falcidens longus Scheltema, 1997
- Falcidens macracanthus Scheltema, 1997
- Falcidens sagittiferus Salvini-Plawen, 1968
- Falcidens sterreri (Salvini-plawen, 1967)
- Falcidens thorensis Salvini-plawen, 1971
- Falsicingula aleutica (Dall, 1887)
- Fargoa bartschi (Winkley, 1909)
- Fargoa bushiana (Bartsch, 1909)
- Fargoa calesi (Bartsch, 1909)
- Fargoa dianthophila (H. W. Wells and M. J. Wells, 1961)
- Fargoa dux (Dall and Bartsch, 1906)
- Fargoa gibbosa (Bush, 1909)
- Fartulum bakeri (Bartsch, 1920)
- Fartulum occidentale (Bartsch, 1920)
- Fartulum orcutti (Dall, 1885)
- Fasciolaria bullisi Lyons, 1972
- Fasciolaria lilium G. Fischer, 1807
- Fasciolaria tulipa (Linnaeus, 1758)
- Favartia alveata (Kiener, 1842)
- Favartia cellulosa (Conrad, 1846)
- Favartia lindae Petuch, 1987
- Favartia minirosea (Abbott, 1954)
- Favartia pacei Petuch, 1988
- Favartia richardbinghami (Petuch, 1987)
- Favorinus auritulus Er. Marcus, 1955
- Favorinus blianus Lemche and Thompson, 1974
- Favorinus branchialis
- Fedikovella beanii (Dall, 1882)
- Felaniella cornea (Reeve, 1850)
- Felaniella parilis (Conrad, 1848)
- Felimare bayeri Ev. Marcus and Er. Marcus, 1967
- Fenimorea fucata (Reeve, 1845)
- Fenimorea halidorema (Schwengel, 1940)
- Fenimorea janetae Bartsch, 1943
- Ferrissia californica (Rowell, 1863)
- Ferrissia rivularis (Say, 1817)
- Ficus carolae Clench, 1945
- Ficus communis Roding, 1798
- Fimbria fimbriata (Linnaeus, 1758)
- Finella adamsi (Dall, 1889)
- Finella barbarensis (Bartsch, 1911)
- Finella californica (Dall and Bartsch, 1901)
- Finella dubia (d'Orbigny, 1842)
- Finella hamlini (Bartsch, 1911)
- Finella io (Bartsch, 1911)
- Finella phanea (Bartsch, 1911)
- Finella pupoides A. Adams, 1860
- Finella tenuisculpta (Carpenter, 1864)
- Fiona pinnata (Eschscholtz, 1831)
- Firoloida demarestia Lesueur, 1817
- Fisherola nuttalli (Haldeman, 1841)
- Fissidentalium calamus (Dall, 1889)
- Fissidentalium candidum (Jeffreys, 1877)
- Fissidentalium capillosum (Jeffreys, 1877)
- Fissidentalium carduus (Dall, 1889)
- Fissidentalium exuberans (Locard, 1897)
- Fissidentalium floridense (J. B. Henderson, 1920)
- Fissidentalium megathyris (Dall, 1890)
- Fissidentalium meridionale (Pilsbry and Sharp, 1897)
- Fissurella alabastites Reeve, 1849
- Fissurella angusta (Gmelin, 1791)
- Fissurella barbadensis (Gmelin, 1791)
- Fissurella barbouri Farfante, 1943
- Fissurella clenchi Farfante, 1943
- Fissurella fascicularis Lamarck, 1822
- Fissurella microtrema Sowerby, 1835
- Fissurella nimbosa (Linnaeus, 1758)
- Fissurella nodosa (Born, 1778)
- Fissurella punctata P. Fischer, 1857
- Fissurella rosea (Gmelin, 1791)
- Fissurella rubropicta Pilsbry, 1890
- Fissurella subrostrata Sowerby, 1835
- Fissurella volcano Reeve, 1849
- Fissurellidea bimaculata Dall, 1871
- Fissurisepta granulata (Sequenza, 1863)
- Flabellina cooperi (Cockerell, 1901)
- Flabellina engeli Ev. Marcus and Er. Marcus, 1968
- Flabellina gracilis (Alder and Hancock, 1844)
- Flabellina nobilis (A. E. Verrill, 1880)
- Flabellina pedata (Montagu, 1815)
- Flabellina pellucida (Alder and Hancock, 1843)
- Flabellina pricei (MacFarland, 1966)
- Flabellina salmonacea (Couthouy, 1838)
- Flabellina subrosacea (Eschscholtz, 1831)
- Flabellina trilineata (O'Donoghue, 1921)
- Flabellina trophina (Bergh, 1894)
- Flabellina verrucosa (M. Sars, 1829)
- Flabellinopsis iodinea (Cooper, 1863)
- Floridiscrobs dysbatus (Pilsbry and McGinty, 1949)
- Floridobia alexander (F. G. Thompson, 2000)
- Floridobia floridana (Frauenfeld, 1863)
- Floridobia fraterna (F. G. Thompson, 1968)
- Floridobia helicogyra (F. G. Thompson, 1968)
- Floridobia leptospira (F. G. Thompson, 2000)
- Floridobia mica (F. G. Thompson, 1968)
- Floridobia monroensis (Dall, 1885)
- Floridobia parva (F. G. Thompson, 1968)
- Floridobia petrifons (F. G. Thompson, 1968)
- Floridobia ponderosa (F. G. Thompson, 1968)
- Floridobia porterae (F. G. Thompson, 2000)
- Floridobia vanhyningi (Vanatta, 1934)
- Floridobia wekiwae (F. G. Thompson, 1968)
- Floridobia winkleyi (Pilsbry, 1912)
- Fluminicola ahjumawi Hershler, Liu, Frest and Johannes, 2007
- Fluminicola anserinus Hershler, Liu, Frest and Johannes, 2007
- Fluminicola caballensis Hershler, Liu, Frest and Johannes, 2007
- Fluminicola coloradoensis Morrison, 1940
- Fluminicola dalli (Call, 1884)
- Fluminicola erosus Hershler, Liu, Frest and Johannes, 2007
- Fluminicola favillaceus Hershler, Liu, Frest and Johannes, 2007
- Fluminicola fremonti Hershler, Liu, Frest and Johannes, 2007
- Fluminicola fresti Hershler, Liu and Hubbart, 2017
- Fluminicola fuscus (Haldeman, 1847)
- Fluminicola gustafsoni Hershler and Liu, 2012
- Fluminicola insolitus Hershler, 1999
- Fluminicola klamathensis Liu and Hershler, 2019
- Fluminicola lunsfordensis Hershler, Liu, Frest and Johannes, 2007
- Fluminicola minutissimus Pilsbry, 1907
- Fluminicola modoci Hannibal, 1912
- Fluminicola multifarius Hershler, Liu, Frest and Johannes, 2007
- Fluminicola neritoides Hershler, Liu, Frest and Johannes, 2007
- Fluminicola nuttallianus (Lea, 1838)
- Fluminicola potemicus Hershler, Liu, Frest and Johannes, 2007
- Fluminicola scopulinus Hershler, Liu, Frest and Johannes, 2007
- Fluminicola seminalis (Hinds, 1842)
- Fluminicola turbiniformis (Tryon, 1865)
- Fluminicola umbilicatus Hershler, Liu, Frest and Johannes, 2007
- Fluminicola umpquaensis Hershler, Liu and Hubbart, 2017
- Fluminicola virens (Lea, 1838)
- Fluminicola virginius Hershler, 1999
- Fluminicola warnerensis Hershler, Liu, Frest and Johannes, 2007
- Folinia bermudezi (Aguayo and Rehder, 1936)
- Fontigens aldrichi (Call and Beecher, 1886)
- Fontigens antroecetes (Hubricht, 1972)
- Fontigens bottimeri (Walker, 1925)
- Fontigens cryptica Hubricht, 1963
- Fontigens morrisoni Hershler, Holsinger and Hubricht, 1990
- Fontigens nickliniana (Lea, 1838)
- Fontigens orolibas Hubricht, 1957
- Fontigens proserpina (Hubricht, 1940)
- Fontigens tartarea Hubricht, 1963
- Fontigens turritella Hubricht, 1976
- Forreria belcheri (Hinds, 1843)
- Fossarus bellus Dall, 1889
- Fossarus compactus Dall, 1889
- Fossarus elegans A. E. Verrill and S. Smith, 1882
- Fossarus orbignyi P. Fischer, 1864
- Fossula fossiculifera (d'Orbigny, 1835)
- Fowlerina zetesios Pelseneer, 1906
- Fragum mundum (Reeve, 1845)
- Friersonia iridella (Pilsbry & Frierson, 1908)
- Frigidoalvania brychia (A. E. Verrill, 1884)
- Frigidoalvania cruenta (Odhner, 1915)
- Frigidoalvania janmayeni (Friele, 1878)
- Frigidoalvania pelagica (Stimpson, 1851)
- Froekenia clara Hoyle, 1904
- Fumonelix archeri (Pilsbry, 1940)
- Fumonelix christyi (Bland, 1860)
- Fumonelix jonesiana (Archer, 1938)
- Fumonelix orestes (Hubricht, 1975)
- Fumonelix wetherbyi (Bland, 1873)
- Fumonelix wheatleyi (Bland, 1860)
- Fusconaia askewi (Marsh, 1896)
- Fusconaia burkei (Walker in Ortmann & Walker, 1922)
- Fusconaia cerina (Conrad, 1838)
- Fusconaia chunii (Lea, 1861)
- Fusconaia cor (Conrad, 1834)
- Fusconaia cuneolus (Lea, 1840)
- Fusconaia escambia Clench & Turner, 1956
- Fusconaia flava (Rafinesque, 1820)
- Fusconaia iheringi (B. H. Wright, 1898)
- Fusconaia lananensis (Frierson, 1901)
- Fusconaia masoni (Conrad, 1834)
- Fusconaia mitchelli (Simpson in Dall, 1896)
- Fusconaia ozarkensis (Call, 1887)
- Fusconaia subrotunda (Lea, 1831)
- Fusinus aepynotus (Dall, 1889)
- Fusinus alcimus (Dall, 1889)
- Fusinus amphiurgus (Dall, 1889)
- Fusinus barbarensis (Trask, 1855)
- Fusinus benthalis (Dall, 1889)
- Fusinus bocagei (P. Fischer, 1882)
- Fusinus couei (Petit de la Saussaye, 1853)
- Fusinus dowianus Olsson, 1954
- Fusinus eucosmius (Dall, 1889)
- Fusinus harfordii (Stearns, 1871)
- Fusinus helenae Bartsch, 1939
- Fusinus kobelti (Dall, 1877)
- Fusinus luteopictus (Dall, 1877)
- Fusinus monksae Dall, 1915
- Fusinus stegeri Lyons, 1978
- Fusinus timessus (Dall, 1889)
- Fusinus undatus (Gmelin, 1791)
- Fusitriton oregonensis (Redfield, 1848)
- Fustiaria circinatum (G. B. Sowerby, 1823)
- Fustiaria liodon (Pilsbry and Sharp, 1897)
- Fustiaria stenoschizum (Pilsbry and Sharp, 1897)
- Gabrielona nepeanensis Gatliff and Gabriel, 1908
- Gabrielona sulcifera Robertson, 1973
- Gadila fusiformis (Pilsbry and Sharp, 1898)
- Gadila gadus (Montagu, 1803)
- Gadila hepburni (Dall, 1897)
- Gadila mayori (J. B. Henderson, 1920)
- Gadila olivii (Scacchi, 1835)
- Gadila subfusiformes (M. Sars, 1850)
- Gadilina triquetra (Brocchi, 1814)
- Gafrarium minimum
- Galba alberta F. C. Baker, 1919
- Galba bulimoides (Lea, 1841)
- Galba cockerelli (Pilsbry and Ferriss, 1906)
- Galba cubensis (Pfeiffer, 1839)
- Galba cyclostoma (Walker, 1808)
- Galba dalli (F. C. Baker, 1907)
- Galba exigua (Lea, 1841)
- Galba galbana (Say, 1825)
- Galba humilis (Say, 1822)
- Galba modicella (Say, 1825)
- Galba obrussa (Say, 1825)
- Galba parva (Lea, 1841)
- Galba peninsulae (Walker, 1908)
- Galba perplexa (F. C. Baker and J. Henderson, 1929)
- Galba perpolita (Dall, 1905)
- Galba rustica (Lea, 1841)
- Galba sonomaensis (Hemphill in Pilsbry and Ferriss, 1906)
- Galba tazewelliana (Wolf, 1870)
- Galba techella Haldeman, 1867
- Galba truncatula (Muller, 1774)
- Galba vancouverensis (F. C. Baker, 1939)
- Galeomma turtoni Turton, 1825
- Galiteuthis armata Joubin, 1898
- Galiteuthis glacialis (Chun, 1906)
- Galiteuthis pacifica (Robson, 1948)
- Galiteuthis phyllura Berry, 1911
- Galiteuthis suhmi (Hoyle, 1886)
- Ganesa abyssicola Bush, 1897
- Ganesa basistriata Jeffreys, 1883
- Ganesa bithynoides Jeffreys, 1883
- Ganesa bushae (Dall, 1927)
- Ganesa conica (Dall, 1927)
- Ganesa convexa Bush, 1897
- Ganesa dalli Verrill, 1882
- Ganesa depressa (Dall, 1927)
- Ganesa diaphana Verrill, 1884
- Ganesa limata (Dall, 1889)
- Ganesa nitidiuscula Jeffreys, 1883
- Ganesa ornata Verrill, 1884
- Ganesa peterseni Friele, 1877
- Ganesa ponsonbyi Dautzenberg and Fischer, 1879
- Ganesa profunda Friele, 1879
- Ganesa proxima Tryon, 1888
- Ganesa pruinosa Jeffreys, 1883
- Ganesa radiata Dall, 1927
- Ganesa rugulosa G. O. Sars, 1878
- Ganesa smithi
- Ganesa spinulosa Bush, 1897
- Ganesa striata Bush, 1897
- Ganesa tenera Jeffreys, 1883
- Ganesa turgida Odhner, 1912
- Ganesa valvata (Dall, 1927)
- Ganesa verrilli Tryon, 1888
- Gari californica (Conrad, 1849)
- Gari costulata
- Gari depressa
- Gari edentula (Gabb, 1869)
- Gari fervensis
- Gari fucata (Hinds, 1845)
- Gari helenae Olsson, 1961
- Gari maxima (Deshayes, 1855)
- Gari regularis (Carpenter, 1864)
- Gari tellinella (Lamarck, 1818)
- Gastrochaena dubia Pennant, 1777
- Gastrochaena hians (Gmelin, 1791)
- Gastrochaena ovata G. B. Sowerby I, 1834
- Gastrochaena stimpsoni Tryon, 1861
- Gastrocopta abbreviata (Sterki, 1909)
- Gastrocopta armifera (Say, 1821)
- Gastrocopta ashmuni (Sterki, 1898)
- Gastrocopta carnegiei (Sterki, 1916)
- Gastrocopta clappi (Sterki, 1909)
- Gastrocopta cochisensis (Pilsbry and Ferriss, 1910)
- Gastrocopta contracta (Say, 1822)
- Gastrocopta corticaria (Say, 1816)
- Gastrocopta cristata (Pilsbry and Vanatta, 1900)
- Gastrocopta dalliana (Sterki, 1898)
- Gastrocopta holzingeri (Sterki, 1889)
- Gastrocopta pellucida (Pfeiffer, 1841)
- Gastrocopta pentodon (Say, 1822)
- Gastrocopta pilsbryana (Sterki, 1890)
- Gastrocopta procera (Gould, 1840)
- Gastrocopta prototypus (Pilsbry, 1899)
- Gastrocopta quadridens Pilsbry, 1916
- Gastrocopta riograndensis (Pilsbry, 1916)
- Gastrocopta riparia Pilsbry, 1916
- Gastrocopta ruidosensis (Cockerell, 1899)
- Gastrocopta rupicola (Say, 1821)
- Gastrocopta servilis (Gould, 1843)
- Gastrocopta similis (Sterki, 1909)
- Gastrocopta sterkiana Pilsbry, 1917
- Gastrocopta tappaniana (C. B. Adams, 1842)
- Gastrodonta fonticula Wurtz, 1948
- Gastrodonta interna (Say, 1822)
- Gastropteron chacmol Gosliner, 1989
- Gastropteron cinereum Dall, 1925
- Gastropteron pacificum Bergh, 1893
- Gastropteron rubrum (Rafinesque, 1814)
- Gastropteron vespertilium Gosliner and Armes, 1984
- Gaza fischeri Dall, 1889
- Gaza superba (Dall, 1881)
- Gaza watsoni (Dall, 1881)
- Geitodoris complanata (A. E. Verrill, 1880)
- Geitodoris heathi (MacFarland, 1905)
- Geitodoris immunda Bergh, 1894
- Geitodoris planata (Alder and Hancock, 1846)
- Geitodoris pusae (Er. Marcus, 1955)
- Gemma gemma (Totten, 1834)
- Gemmula congener
- Gemmula interpolata
- Gemmula microscelida
- Gemmula monilifera
- Gemmula periscelida (Dall, 1889)
- Genitoconia atriolonga Salvini-Plawen, 1967
- Genitoconia mariensis Scheltema, 1997
- Genitoconia rosea Salvini-Plawen, 1967
- Gerdiella corbicula (Dall, 1908)
- Germainaia geayi (Germain, 1911)
- Geukensia demissa (Dillwyn, 1817)
- Geukensia granosissima (G. B. Sowerby III, 1914)
- Gibberula lavalleeana (d'Orbigny, 1842)
- Gibberula subtrigona (Carpenter, 1864)
- Gibbosula confragosa Frierson, 1928
- Gibbosula crassa (Wood, 1815)
- Gibbosula laosensis (Lea, 1863)
- Gibbosula rochechouartii (Heude, 1875)
- Gibbula cineraria
- Gibbula magus (Linnaeus)
- Gibbula monodonta
- Gibbula pennanti
- Gibbula tumida
- Gibbula umbilicalis
- Gillia altilis (Lea, 1841)
- Glans carpenteri (Lamy, 1922)
- Glans dominguensis (d'Orbigny, 1842)
- Glans subquadrata (Carpenter, 1864)
- Glaucus atlanticus Forster, 1777
- Gleba cordata Niebuhr, 1776
- Glebula rotundata (Lamarck, 1819)
- Gliabates oregonius Webb, 1959
- Globivenus callimorpha (Dall, 1902)
- Globivenus fordi (Yates, 1890)
- Globivenus foresti (Fischer-Piette and Testud, 1967)
- Globivenus listeroides (Fischer-Piette and Testud, 1967)
- Globivenus rigida (Dillwyn, 1817)
- Globivenus rugatina (Heilprin, 1886)
- Glossocardia agassizii (Dall, 1889)
- Glossodoris acriba Marcus and Marcus, 1967
- Glossodoris aegialia (Bergh, 1905)
- Glossodoris agassizi (Bergh, 1894)
- Glossodoris banksi (Farmer, 1963)
- Glossodoris bayeri
- Glossodoris edenticulata (White, 1952)
- Glossodoris neona Marcus, 1955
- Glossodoris norrisi (Farmer, 1963)
- Glossodoris porterae (Cockerell, 1902)
- Glossodoris sedna (Ev. Marcus and Er. Marcus, 1967)
- Glossodoris sycilla (Bergh, 1890)
- Glossodoris tura (Marcus and Marcus, 1967)
- Glossodoris zebra
- Glycymeris americana (DeFrance, 1829)
- Glycymeris corteziana Dall, 1916
- Glycymeris decussata (Linnaeus, 1758)
- Glycymeris glycymeris (Linnaeus, 1758)
- Glycymeris keenae Willett, 1944
- Glycymeris pectinata (Gmelin, 1791)
- Glycymeris septentrionalis (Middendorff, 1849)
- Glycymeris spectralis Nicol, 1952
- Glycymeris subobsoleta (Carpenter, 1864)
- Glycymeris subtilis (Nicol, 1956)
- Glycymeris undata (Linnaeus, 1758)
- Glyphostoma adria Dall, 1919
- Glyphostoma cymodoce Dall, 1919
- Glyphostoma dentiferum Gabb, 1872
- Glyphostoma elsae Bartsch, 1934
- Glyphostoma gabbii Dall, 1889
- Glyphostoma golfoyaquense Maury, 1917
- Glyphostoma hesione (Dall, 1919)
- Glyphostoma pilsbryi Schwengel, 1940
- Glyphostomops hendersoni (Bartsch, 1934)
- Glyphostomops oenoa (Bartsch, 1934)
- Glyphoturris diminuta (C. B. Adams, 1850)
- Glyphoturris eritima (Bush, 1885)
- Glyphoturris quadrata (Reeve, 1845)
- Glyphoturris rugirima (Dall, 1889)
- Glyphyalinia carolinensis (Cockerell, 1890)
- Glyphyalinia clingmani (Dall, 1890)
- Glyphyalinia cryptomphala (G. H. Clapp, 1915)
- Glyphyalinia cumberlandiana (G. H. Clapp, 1919)
- Glyphyalinia floridana (Morrison, 1937)
- Glyphyalinia indentata (Say, 1823)
- Glyphyalinia junaluskana (Clench and Banks, 1932)
- Glyphyalinia latebricola Hubricht, 1968
- Glyphyalinia lewisiana (G. H. Clapp, 1908)
- Glyphyalinia luticola Hubricht, 1966
- Glyphyalinia ocoae Hubricht, 1978
- Glyphyalinia pecki Hubricht, 1966
- Glyphyalinia pentadelphia (Pilsbry, 1900)
- Glyphyalinia picea Hubricht, 1976
- Glyphyalinia praecox (H. B. Baker, 1930)
- Glyphyalinia raderi (Dall, 1898)
- Glyphyalinia rhoadsi (Pilsbry, 1899)
- Glyphyalinia rimula Hubricht, 1968
- Glyphyalinia roemeri (Pilsbry and Ferriss, 1906)
- Glyphyalinia sculptilis (Bland, 1858)
- Glyphyalinia specus Hubricht, 1965
- Glyphyalinia umbilicata (Cockerell, 1893)
- Glyphyalinia vanattai (Pilsbry and Walker, 1902)
- Glyphyalinia virginica (Morrison, 1937)
- Glyphyalinia wheatleyi (Bland, 1883)
- Glyptaesopus proctorae (M. Smith, 1936)
- Glyptostoma gabrielense Pilsbry, 1938
- Glyptostoma newberryanum (W. G. Binney, 1858)
- Godiva rubrolineata Edmunds, 1964
- Gonatopsis borealis Sasaki, 1923
- Gonatopsis japonica Okiyama, 1969
- Gonatopsis makko Okutani and Nemoto, 1964
- Gonatopsis octopedatus Sasaki, 1920
- Gonatopsis okutanii Nesis, 1972
- Gonatus antarcticus Lönnberg, 1898
- Gonatus berryi Naef, 1923
- Gonatus californiensis Young, 1972
- Gonatus fabricii (Lichtenstein, 1818)
- Gonatus kamtschaticus (Middendorff, 1849)
- Gonatus madokai Kubodera and Okutani, 1977
- Gonatus onyx Young, 1972
- Gonatus oregonensis Jefferts, 1985
- Gonatus pyros Young, 1972
- Gonatus steenstrupi Kristensen, 1981
- Gonatus ursabrunae Jefferts, 1985
- Goniaeolis typica M. Sars, 1861
- Gonidea angulata (Lea, 1838)
- Goniodoris castanea Alder and Hancock, 1845
- Goniodoris nodosa
- Goodallia triangularis (Montagu, 1803)
- Gouldia cerina (C. B. Adams, 1845)
- Gouldia minima (Montagu, 1803)
- Grandidieria burtoni (Woodward, 1859)
- Graneledone antarctica Voss, 1976
- Graneledone boreopacifica Nesis, 1982
- Graneledone challengeri (Berry, 1916)
- Graneledone macrotyla Voss, 1976
- Graneledone verrucosa (Verrill, 1881)
- Granotoma albrechti (Krause, 1885)
- Granotoma krausei (Dall, 1886)
- Granoturris presleyi Lyons, 1972
- Granula sandwicensis (Pearse, 1860)
- Granulina hadria (Dall, 1889)
- Granulina margaritula (Carpenter, 1857)
- Granulina ovuliformis (d'Orbigny, 1841)
- Granulina vitrea
- Graphis albida
- Graphis underwoodae Bartsch, 1947
- Graptacme calamus (Dall, 1889)
- Graptacme eborea (Conrad, 1846)
- Graptacme inversa (Deshayes, 1826)
- Graptacme perlonga (Dall, 1881)
- Graptacme semipolita (Broderip and G. B. Sowerby I, 1829)
- Graptacme semistriolata (Guilding, 1834)
- Graptacme semistriolatum (Guilding, 1834)
- Gregariella chenui (Recluz, 1842)
- Gregariella coarctata (Carpenter, 1857)
- Gregariella coralliophaga (Gmelin, 1791)
- Gregariella petagnae (Scacchi, 1832)
- Gregariella semigranata (Reeve, 1858)
- Greilada elegans
- Grimalditeuthis bonplandi (Verany, 1839)
- Grimpella thaumastocheir Robson, 1928
- Grimpoteuthis albatrossi (Sasaki, 1920)
- Grimpoteuthis antarctica Kubodera and Okutani, 1986
- Grimpoteuthis bathynectes Voss and Pearcy, 1990
- Grimpoteuthis bruuni Voss, 1982
- Grimpoteuthis glacialis (Robson, 1930)
- Grimpoteuthis hippocrepium (Hoyle, 1904)
- Grimpoteuthis mawsoni (Berry, 1917)
- Grimpoteuthis meangensis (Hoyle, 1885)
- Grimpoteuthis megaptera (Verrill, 1885)
- Grimpoteuthis pacifica (Hoyle, 1885)
- Grimpoteuthis plena (Verrill, 1885)
- Grimpoteuthis tuftsi Voss and Pearcy, 1990
- Grimpoteuthis umbellata (Fischer, 1883)
- Grimpoteuthis wulkeri (Grimpe, 1920)
- Grippina californica Dall, 1912
- Guppya gundlachi (Pfeiffer, 1839)
- Guppya miamiensis Pilsbry, 1903
- Guppya sterkii (Dall, 1888)
- Gymnobela abyssorum (Locard, 1897)
- Gymnobela agassizii (A. E. Verrill and S. Smith, 1880)
- Gymnobela aquilarum (Watson, 1881)
- Gymnobela emertoni (Verrill, 1884)
- Gymnobela engonia Verrill, 1884
- Gymnobela frielei Verrill, 1885
- Gymnobela fulvocincta (Dautzenberg and Fischer, 1896)
- Gymnobela phyxanor (Watson, 1886)
- Gymnobela subaraneosa (Dautzenberg and Fischer, 1896)
- Gymnomenia minuta Scheltema, 1997
- Gymnomenia pellucida Odhner, 1921
- Gymnotoplax citrina (Ruppell and Leuckart, 1828)
- Gymnotoplax engeli (Gardiner, 1936)
- Gymnotoplax quadridens
- Gyraulus circumstriatus (Tryon, 1866)
- Gyraulus crista (Linnaeus, 1758)
- Gyraulus deflectus (Say, 1824)
- Gyraulus hornensis F. C. Baker, 1934
- Gyraulus parvus (Say, 1817)
- Gyraulus vermicularis (Gould, 1847)
- Gyrodes depressus
- Gyrotoma excisa (Lea, 1843)
- Gyrotoma lewisii (Lea, 1869)
- Gyrotoma pagoda (Lea, 1845)
- Gyrotoma pumila (Lea, 1860)
- Gyrotoma pyramidata (Shuttleworth, 1845)
- Gyrotoma walkeri (H. H. Smith, 1924)
- Haasica balzani (Ihering, 1893)
- Haasodonta fannyae (R. I. Johnson, 1948)
- Haasodonta vanheurni McMichael & Hiscock, 1958
- Habevolutopsius attenuatus (Dall, 1874)
- Habevolutopsius hirasei (Pilsbry, 1907)
- Haedropleura septangularis (Montagu, 1803)
- Halgerda terramtuentis Bertsch and Johnson, 1982
- Halicardia flexuosa (A. E. Verrill and S. Smith, 1881)
- Halicardia perplicata (Dall, 1890)
- Haliella stenostoma
- Haliotinella patinaria (Guppy, 1876)
- Haliotis alfredensis Bartsch, 1915
- Haliotis asinina Linnaeus, 1758
- Haliotis australis J.H. Gmelin, 1791
- Haliotis brazieri Angas, 1869
- Haliotis clathrata Reeve, 1846
- Haliotis coccoradiata Reeve, 1846
- Haliotis corrugata W. Wood, 1828
- Haliotis cracherodii Leach, 1814
- Haliotis cyclobates Péron, 1816
- Haliotis dalli Henderson, 1915
- Haliotis discus Reeve, 1846
- Haliotis dissona (Iredale, 1929)
- Haliotis diversicolor Reeve, 1846
- Haliotis drogini Owen & Reitz in Geiger and Owen, 2012
- Haliotis elegans Koch in Philippi, 1844
- Haliotis fatui Geiger, 1999
- Haliotis fulgens Philippi, 1845
- Haliotis geigeri Owen, 2014
- Haliotis gigantea J.H. Gmelin, 1791
- Haliotis glabra J.H. Gmelin, 1791
- Haliotis iris J.H. Gmelin, 1791
- Haliotis jacnensis Reeve, 1846
- Haliotis kamtschatkana Jonas, 1845
- Haliotis laevigata Donovan, 1808
- Haliotis madaka (Habe, 1977)
- Haliotis mariae W. Wood, 1828
- Haliotis marmorata Linnaeus, 1758
- Haliotis melculus (Iredale, 1927)
- Haliotis midae Linnaeus, 1758
- Haliotis mykonosensis Owen, Hanavan & Hall, 2001
- Haliotis ovina J.H. Gmelin, 1791
- Haliotis parva Linnaeus, 1758
- Haliotis planata Sowerby II, 1882
- Haliotis pourtalesii Dall, 1881
- Haliotis pulcherrima J.H. Gmelin, 1791
- Haliotis queketti E.A. Smith, 1910
- Haliotis roei J. Gray, 1826
- Haliotis rubiginosa Reeve, 1846
- Haliotis rubra Leach, 1814
- Haliotis rufescens Swainson, 1822
- Haliotis rugosa Lamarck, 1822
- Haliotis scalaris (Leach, 1814)
- Haliotis semiplicata Menke, 1843
- Haliotis sorenseni Bartsch, 1940
- Haliotis spadicea Donovan, 1808
- Haliotis speciosa Reeve, 1846
- Haliotis squamosa J. Gray, 1826
- Haliotis stomatiaeformis Reeve, 1846
- Haliotis supertexta Lischke, 1870
- Haliotis thailandis Dekker & Patamakanthin, 2001
- Haliotis tuberculata Linnaeus, 1758
- Haliotis unilateralis Lamarck, 1822
- Haliotis varia Linnaeus, 1758
- Haliotis virginea J.H. Gmelin, 1791
- Haliotis walallensis Stearns, 1899
- Haliphron atlanticus Steenstrup, 1861
- Haliris aequacostata (Howard, 1950)
- Haliris fischeriana (Dall, 1881)
- Halistrepta sulcata (Dall, 1904)
- Halistylus columna (Dall, 1890)
- Halistylus pupoides (Carpenter, 1864)
- Halistylus pupoideus (Carpenter, 1864)
- Hallaxa chani Gosliner and Williams, 1975
- Haloceras trichotropoides Waren and Bouchet, 1991
- Haloconcha minor Dall, 1919
- Haloconcha refleza (Dall, 1884)
- Halodakra brunnea (Dall, 1916)
- Halodakra salmonea (Carpenter, 1864)
- Halodakra subtrigona (Carpenter, 1857)
- Haminoea antillarum (d'Orbigny, 1841)
- Haminoea callidegenita Gibson and Chia, 1989
- Haminoea crocata
- Haminoea curta
- Haminoea cymbalum
- Haminoea elegans (J. E. Gray, 1825)
- Haminoea galba
- Haminoea hydatis (Linnaeus, 1758)
- Haminoea navicula (Da Costa, 1778)
- Haminoea petitii (d'Orbigny, 1841)
- Haminoea solitaria (Say, 1822)
- Haminoea succinea (Conrad, 1846)
- Haminoea taylorae Petuch, 1987
- Haminoea vesicula (Gould, 1855)
- Haminoea virescens (G. B. Sowerby II, 1833)
- Hamiota altilis (Conrad, 1834)
- Hamiota australis (Simpson, 1900)
- Hamiota perovalis (Conrad, 1834)
- Hamiota subangulata (Lea, 1840)
- Hancockia californica MacFarland, 1923
- Hancockia ryrca Marcus, 1957
- Hancockia uncinata (Hesse, 1872)
- Hanleya dalli
- Hanleya hanleyi (Bean, 1844)
- Hanleya mendicaria
- Hanleya nagelfar (Loven, 1842)
- Hanleya tropicalis
- Hanleyella asiatica Sirenko, 1973
- Hanleyella oldroydi (Dall, 1919)
- Hapalochlaena fasciata (Hoyle, 1886)
- Hapalochlaena lunulata (Quoy and Gaimard, 1832)
- Hapalochlaena maculosa (Hoyle, 1883)
- Hapalochlaena nierstraszi (Adam, 1938)
- Haplocochlias cyclophoreus Carpenter, 1864
- Haplocochlias lucasensis (Strong, 1934)
- Haplocochlias minutissima
- Haplocochlias swifti Vanatta, 1913
- Haplotrema alameda Pilsbry, 1930
- Haplotrema caelatum (Mazyck, 1886)
- Haplotrema catalinense (Hemphill, 1890)
- Haplotrema concavum (Say, 1821)
- Haplotrema continentis H. B. Baker, 1930
- Haplotrema costatum A. G. Smith, 1957
- Haplotrema duranti (Newcomb, 1864)
- Haplotrema keepi (Hemphill, 1890)
- Haplotrema kendeighi Webb, 1951
- Haplotrema minimum (Ancey, 1888)
- Haplotrema mokelumnense Roth, 1990
- Haplotrema sportella (Gould, 1846)
- Haplotrema transfuga (Hemphill, 1892)
- Haplotrema vancouverense (I. Lea, 1839)
- Haplotrema voyanum (Newcomb, 1864)
- Harmandia somboriensis Rochebrune, 1882
- Hastula cinerea (Born, 1778)
- Hastula hastata (Gmelin, 1791)
- Hastula maryleeae R. D. Burch, 1965
- Hastula salleana (Deshayes, 1859)
- Haumea juddi Dall, Bartsch, and Rehder, 1938
- Haustellum anniae (M. Smith, 1940)
- Haustellum bellegladeense (Vokes, 1963)
- Haustellum cabritii (Bernardi, 1859)
- Haustellum rubidum (F. C. Baker, 1897)
- Haustellum tryoni (Hidalgo in Tryon, 1880)
- Hawaiia alachuana (Dall, 1885)
- Hawaiia minuscula (A. Binney, 1841)
- Hawaiia neomexicana (Cockerell and Pilsbry, 1900)
- Heathia porosa (Heath, 1911)
- Hebetancylus excentricus (Morelet, 1851)
- Hedylopsis brambelli
- Hedylopsis loricata
- Hedylopsis microhedyle
- Hedylopsis rhopalotecta
- Hedylopsis riseri M. P. Morse, 1976
- Hedylopsis spiculifera
- Hedylopsis suecica
- Heilprinia lindae Petuch, 1987
- Heilprinia timessa (Dall, 1889)
- Helcion pectinata (Born, 1778)
- Heleobia stagnorum (Gmelin, 1791)
- Heleobops carrikeri Davis and McKee, 1989
- Heleobops docimus F. G. Thompson, 1968
- Heliacus bicanaliculatus (Valenciennes, 1832)
- Heliacus bisulcatus (d'Orbigny, 1842)
- Heliacus cylindricus (Gmelin, 1791)
- Heliacus infundibuliformis (Gmelin, 1791)
- Heliacus planispira Pilsbry and Lowe, 1932
- Heliacus sigsbeei (Dall, 1889)
- Helicella obvia (Menke, 1828)
- Helicina clappi Pilsbry, 1909
- Helicocranchia joubini (Voss, 1962)
- Helicocranchia papillata (Voss, 1960)
- Helicocranchia pfefferi Massy, 1907
- Helicodiscus aldrichianus (G. H. Clapp, 1907)
- Helicodiscus barri Hubricht, 1962
- Helicodiscus bonamicus Hubricht, 1978
- Helicodiscus diadema Grimm, 1967
- Helicodiscus eigenmanni Pilsbry, 1900
- Helicodiscus enneodon Hubricht, 1967
- Helicodiscus fimbriatus Wetherby, 1881
- Helicodiscus hadenoecus Hubricht, 1962
- Helicodiscus hexodon Hubricht, 1966
- Helicodiscus inermis H. B. Baker, 1929
- Helicodiscus lirellus Hubricht, 1975
- Helicodiscus multidens Hubricht, 1962
- Helicodiscus notius Hubricht, 1962
- Helicodiscus nummus (Vanatta, 1899)
- Helicodiscus parallelus (Say, 1817)
- Helicodiscus punctatellus Morrison, 1942
- Helicodiscus salmonaceus Hemphill, 1890
- Helicodiscus saludensis (Morrison, 1937)
- Helicodiscus shimeki Hubricht, 1962
- Helicodiscus singleyanus (Pilsbry, 1889)
- Helicodiscus tridens (Morrison, 1935)
- Helicodiscus triodus Hubricht, 1958
- Helisoma anceps (Menke, 1830)
- Helisoma minus (Cooper, 1870)
- Helisoma newberryi (Lea, 1858)
- Helix aperta Born, 1778
- Helix aspersa Muller, 1774
- Helix pomatia Linnaeus, 1758
- Helminthoglypta allyniana (S. S. Berry, 1920)
- Helminthoglypta allynsmithi Pilsbry, 1939
- Helminthoglypta arrosa (W. G. Binney, 1858)
- Helminthoglypta avus (Bartsch, 1916)
- Helminthoglypta ayresiana (Newcomb, 1861)
- Helminthoglypta benitoensis Lowe, 1930
- Helminthoglypta berryi Hanna, 1929
- Helminthoglypta californiensis (I. Lea, 1838)
- Helminthoglypta callistoderma Pilsbry, 1917
- Helminthoglypta carpenteri (Newcomb, 1861)
- Helminthoglypta caruthersi Willett, 1934
- Helminthoglypta coelata (Bartsch, 1916)
- Helminthoglypta concolor Roth and Hochberg, 1988
- Helminthoglypta contracostae (Pilsbry, 1895)
- Helminthoglypta crotalina S. S. Berry, 1928
- Helminthoglypta cuyama Hanna and A. G. Smith, 1937
- Helminthoglypta cuyamacensis (Bartsch, 1895)
- Helminthoglypta cypreophila (W. G. Binney and Bland, 1869)
- Helminthoglypta diabloensis (J. G. Cooper, 1869)
- Helminthoglypta dupetithouarsii (Deshayes, 1840)
- Helminthoglypta edwardsi Gregg and W. B. Miller, 1976
- Helminthoglypta euomphalodes S. S. Berry, 1938
- Helminthoglypta exarata (Pfeiffer, 1857)
- Helminthoglypta expansilabris (Pilsbry, 1898)
- Helminthoglypta fairbanksi Reeder and W. B. Miller, 1986
- Helminthoglypta ferrissi Pilsbry, 1924
- Helminthoglypta fieldi Pilsbry, 1930
- Helminthoglypta fisheri (Bartsch, 1904)
- Helminthoglypta fontiphila Gregg, 1931
- Helminthoglypta graniticola S. S. Berry, 1926
- Helminthoglypta greggi Willett, 1931
- Helminthoglypta hertleini Hanna and A. G. Smith, 1937
- Helminthoglypta inglesi S. S. Berry, 1938
- Helminthoglypta isabella S. S. Berry, 1938
- Helminthoglypta jaegeri S. S. Berry, 1928
- Helminthoglypta liodoma S. S. Berry, 1938
- Helminthoglypta mailliardi Pilsbry, 1927
- Helminthoglypta micrometalleoides W. B. Miller, 1970
- Helminthoglypta milleri Reeder, 1986
- Helminthoglypta mohaveana S. S. Berry, 1927
- Helminthoglypta montezuma Reeder and W. B. Miller, 1986
- Helminthoglypta napaea S. S. Berry, 1938
- Helminthoglypta nickliniana (I. Lea, 1838)
- Helminthoglypta orina S. S. Berry, 1938
- Helminthoglypta petricola (S. S. Berry, 1916)
- Helminthoglypta phlyctaena (Bartsch, 1916)
- Helminthoglypta piutensis Willett, 1938
- Helminthoglypta proles (Hemphill, 1892)
- Helminthoglypta reediana Willett, 1932
- Helminthoglypta salviae Roth, 1987
- Helminthoglypta sanctaecrucis Pilsbry, 1927
- Helminthoglypta sequoicola (J. G. Cooper, 1866)
- Helminthoglypta similans Hanna and A. G. Smith, 1937
- Helminthoglypta sonoma Pilsbry, 1937
- Helminthoglypta stageri Willett, 1938
- Helminthoglypta stiversiana (J. G. Cooper, 1876)
- Helminthoglypta talmadgei Roth, 1988
- Helminthoglypta taylori Reeder and Roth, 1988
- Helminthoglypta tejonis S. S. Berry, 1930
- Helminthoglypta thermimontis S. S. Berry, 1953
- Helminthoglypta traskii (Newcomb, 1861)
- Helminthoglypta tudiculata (A. Binney, 1843)
- Helminthoglypta tularensis (Hemphill, 1892)
- Helminthoglypta umbilicata (Pilsbry, 1898)
- Helminthoglypta uvasana Roth and Hochberg, 1992
- Helminthoglypta vasquezi Roth and Hochberg, 1992
- Helminthoglypta venturensis (Bartsch, 1916)
- Helminthoglypta walkeriana (Hemphill, 1911)
- Helminthoglypta waltoni Gregg and W. B. Miller, 1976
- Helminthoglypta willetti (S. S. Berry, 1920)
- Helminthope psammobionta Salvini-Plawen, 1991
- Hemiarthrum setulosum Carpenter in Dall, 1876
- Hemistena lata (Rafinesque, 1820)
- Hemitoma australis (Quoy and Gaimard, 1832)
- Hemitoma bella Gabb, 1865
- Hemitoma emarginata (de Blainville, 1825)
- Hemitoma golischae Dall, 1916
- Hemitoma hermosa Lowe, 1935
- Hemitoma natlandi Durham, 1950
- Hemitoma octoradiata (Gmelin, 1791)
- Hemitoma ostheinerae
- Hemitrochus varians (Menke, 1829)
- Hemphillia burringtoni Pilsbry, 1948
- Hemphillia camelus Pilsbry and Vanatta, 1897
- Hemphillia danielsi Vanatta, 1914
- Hemphillia dromedarius Branson, 1972
- Hemphillia glandulosa Bland and W. G. Binney, 1872
- Hemphillia malonei Pilsbry, 1917
- Hemphillia pantherina Branson, 1975
- Hendersonia occulta (Say, 1831)
- Henrya goldmani (Bartsch, 1947)
- Henrya henryi Bartsch, 1947
- Henrya morrisoni Bartsch, 1947
- Here excavata (Carpenter, 1857)
- Here ricthofeni (Gabb, 1866)
- Hermaea bifida (Montagu, 1815)
- Hermaea cruciata Gould, 1870
- Hermaea dendritica (Alder and Hancock, 1843)
- Hermaea hillae Marcus and Marcus, 1967
- Hermaea kingstoni (T. E. Thompson, 1977)
- Hermaea olivae Mcfarland, 1966
- Hermaea vancouverensis O'Donoghue, 1924
- Hermaea verticilata (Ortea, 1984)
- Hermaeopsis variopicta A. Costa, 1869
- Hermissenda crassicornis (Eschscholtz, 1831)
- Hero formosa
- Herpeteros angelus (Gregg, 1949)
- Herviera gliriella
- Herviera patricia
- Hesperarion hemphilli (W. G. Binney, 1875)
- Hesperarion mariae Branson, 1991
- Hesperarion niger (J. G. Cooper, 1872)
- Hespererato columbella (Menke, 1847)
- Hespererato maugeriae (J. E. Gray, 1832)
- Hespererato vitellina (Hinds, 1844)
- Heteranomia squamula (Linnaeus, 1758)
- Heterodonax bimaculatus (Linnaeus, 1758)
- Heterodonax pacificus (Conrad, 1837)
- Heterodoris robusta A. E. Verrill and Emerton, 1882
- Heteroschismoides subterfissus (Jeffreys, 1877)
- Heteroteuthis dagamensis Robson, 1924
- Heteroteuthis dispar (Rüppell, 1844)
- Heteroteuthis hawaiiensis (Berry, 1909)
- Heteroteuthis weberi Joubin, 1902
- Hexabranchus morsomus Marcus and Marcus, 1962
- Hexaplex fulvescens (G. B. Sowerby II, 1834)
- Hiatella arctica (Linnaeus, 1767)
- Hiatella azaria (Dall, 1881)
- Hiatella glaciana
- Hiatella pholadis (Linnaeus, 1771)
- Hiatella striata Fleuriau, 1802
- Hindsiclava alesidota (Dall, 1889)
- Hindsiclava macilenta (Dall, 1889)
- Hinea lineata (E. M. da Costa, 1778)
- Hinemoa indica
- Hinnites multirugosus (Gale, 1928)
- Hipponix antiquatus (Linnaeus, 1767)
- Hipponix cranioides Carpenter, 1864
- Hipponix grayanus
- Hipponix imbricatus
- Hipponix pilosus
- Hipponix subrufus (Lamarck, 1819)
- Hipponix tumens Carpenter, 1864
- Histioteuthis arcturi (Robson, 1948)
- Histioteuthis atlantica (Hoyle, 1885)
- Histioteuthis bonnellii (Férussac, 1834)
- Histioteuthis celetaria (Voss, 1960)
- Histioteuthis corona (Voss and Voss, 1962)
- Histioteuthis eltaninae Voss, 1969
- Histioteuthis heteropsis (Berry, 1913)
- Histioteuthis hoylei (Goodrich, 1896)
- Histioteuthis macrohista Voss, 1969
- Histioteuthis meleagroteuthis (Chun, 1910)
- Histioteuthis miranda (Berry, 1918)
- Histioteuthis oceani (Robson, 1948)
- Histioteuthis reversa (Verrill, 1880)
- Hochbergellus hirsutus Roth and W. B. Miller, 1992
- Hojeda inaguensis (Weinland, 1880)
- Holospira arizonensis Stearns, 1890
- Holospira bilamellata Dall, 1895
- Holospira campestris Pilsbry and Ferriss, 1915
- Holospira chiricahuana Pilsbry, 1905
- Holospira cionella Pilsbry, 1905
- Holospira cockerelli Dall, 1897
- Holospira crossei Dall, 1895
- Holospira danielsi Pilsbry and Ferriss, 1915
- Holospira ferrissi Pilsbry, 1905
- Holospira goldfussi (Menke, 1847)
- Holospira hamiltoni Dall, 1897
- Holospira mesolia Pilsbry, 1912
- Holospira metcalfi F. G. Thompson, 1974
- Holospira millestriata Pilsbry and Ferriss, 1915
- Holospira montivaga Pilsbry, 1946
- Holospira oritis Pilsbry and Cheatum, 1951
- Holospira pasonis Dall, 1895
- Holospira pityis Pilsbry and Cheatum, 1951
- Holospira regis Pilsbry and Cockerell, 1905
- Holospira riograndensis Pilsbry, 1946
- Holospira sherbrookei Gilbertson, 1989
- Holospira tantalus Bartsch, 1906
- Holospira whetstonensis Pilsbry and Ferriss, 1923
- Holospira yucatanensis Bartsch, 1906
- Holsingeria unthanksensis Hershler, 1989
- Homalopoma albidum (Dall, 1881)
- Homalopoma baculum (Carpenter, 1864)
- Homalopoma berryi J. H. McLean, 1964
- Homalopoma carpenteri Pilsbry, 1888
- Homalopoma cordellensis J. H. McLean, 1996
- Homalopoma draperi J. H. McLean, 1984
- Homalopoma engbergi (Willett, 1929)
- Homalopoma grippi (Dall, 1911)
- Homalopoma indutum (Watson, 1879)
- Homalopoma juanensis (Dall, 1919)
- Homalopoma lacunatum (Carpenter, 1864)
- Homalopoma luridum (Dall, 1885)
- Homalopoma mimicum LaFollette, 1976
- Homalopoma panamense (Dall, 1908)
- Homalopoma paucicostatum (Dall, 1871)
- Homalopoma peloritanum (Cantraine, 1835)
- Homalopoma philipiana (Dall, 1889)
- Homalopoma radiatum (Dall, 1918)
- Homalopoma sanguineus (Linnaeus, 1758)
- Homalopoma subobsoletum Willett, 1937
- Hopkinsia rosacea MacFarland, 1905
- Horologica pupa (Dall and Simpson, 1901)
- Houbricka incisa (Bush, 1899)
- Hoyia sheldoni (Pilsbry, 1890)
- Humboldtiana agavophila Pratt, 1971
- Humboldtiana cheatumi Pilsbry, 1935
- Humboldtiana chisosensis Pilsbry, 1927
- Humboldtiana edithae Parodiz, 1954
- Humboldtiana ferrissiana Pilsbry, 1928
- Humboldtiana fullingtoni Cheatum, 1972
- Humboldtiana hoegiana (von Martens, 1892)
- Humboldtiana palmeri Clench and Rehder, 1930
- Humboldtiana texana Pilsbry, 1927
- Humboldtiana ultima Pilsbry, 1927
- Humilaria kennerleyi (Reeve, 1863)
- Huttonella bicolor (Hutton, 1834)
- Huxleyia munita (Dall, 1898)
- Hyalina cineracea (Dall, 1889)
- Hyalina gracilis (C. B. Adams, 1851)
- Hyalina lactea (Kiener, 1841)
- Hyalina nitida (Hinds, 1844)
- Hyalina pallida (Linnaeus, 1758)
- Hyalina styria Dall, 1889
- Hyalocylis striata (Rang, 1828)
- Hyalopecten biscayensis (Locard, 1886)
- Hyalopecten dilectus (Verrill and Bush, 1897)
- Hyalopecten eucymatus (Dall, 1898)
- Hyalopecten frigidus (Jensen, 1912)
- Hyalopecten parvulinus (Locard, 1897)
- Hyalopecten undatus (A. E. Verrill and S. Smith, 1885)
- Hyaloteuthis pelagica (Bosc, 1802)
- Hydatina physis (Linnaeus, 1758)
- Hydrobia acuta (Draparnaud, 1805)
- Hydrocena cattaroense (Pfeiffer, 1841)
- Hydromyles globulosus (Rang, 1825)
- Hypermastus randolphi (Vanatta, 1900)
- Hypselodoris bayeri (Ev. Marcus and Er. Marcus, 1967)
- Hypselodoris californiensis (Bergh, 1879)
- Hypselodoris edenticulata (White, 1952)
- Hypselodoris sycilla (Bergh, 1890)
- Hypselodoris webbi (d'Orbigny, 1839)
- Hyridella australis (Lamarck, 1819)
- Hyridella depressa (Lamarck, 1819)
- Hyridella drapeta (Iredale, 1934)
- Hyridella glenelgensis (Dennant, 1898)
- Hyridella guppyi (E.A. Smith, 1885)
- Hyridella misoolensis (Schepman, 1897)
- Hyridella narracanensis (Cotton & Gabriel, 1932)
- Hyriopsis bialata Simpson, 1900
- Hyriopsis delaportei (Crosse & Fischer, 1876)
- Hyriopsis desowitzi Brandt, 1974
- Hyriopsis khoratensis Pfeiffer, Graf, Cummings & Page, 2021
- Hyriopsis kratiensis Pfeiffer, Graf, Cummings & Page, 2021
- Hyriopsis myersiana (Lea, 1856)
- Hyriopsis panhai Jeratthitikul, Paphatmethin, Zieritz, Lopes-Lima & Ngor, 2021
- Hyriopsis phuphaniensis Pfeiffer, Graf, Cummings & Page, 2021
- Hyriopsis sakhonensis Pfeiffer, Graf, Cummings & Page, 2021
- Hyriopsis velthuizeni (Schepman, 1896)
- Idaholanx fresti Clark, Campbell and Lydeard, 2017
- Idasola argentea (Jeffreys, 1876)
- Idioctopus gracilipes Taki, 1962
- Idiosepius biserialis Voss, 1962
- Idiosepius macrocheir Voss, 1962
- Idiosepius minimus (D'Orbigny, 1835 in Férussac and D'Orbigny, 1834-1848)
- Idiosepius notoides Berry, 1921
- Idiosepius paradoxus (Ortmann, 1888)
- Idiosepius picteti (Joubin, 1894)
- Idiosepius pygmaeus Steenstrup, 1881
- Idiosepius thailandicus Chotiyaputta, C., T. Okutani, and S. Chaitiamvong, 1991
- Idioteuthis cordiformis (Chun, 1908)
- Idioteuthis danae (Joubin, 1933)
- Idioteuthis famelica (Berry, 1909)
- Idioteuthis hjorti (Chun, 1913)
- Idioteuthis latipinna Sasaki, 1916
- Idioteuthis okutanii Salcedo-Vargas, 1997
- Idioteuthis tyroi Salcedo-Vargas, 1997
- Iheringella isocardioides (Lea, 1856)
- Iheringella semisulcata (H. Adams, 1870)
- Illex argentinus (Castellanos, 1960)
- Illex coindetii (Verany, 1839)
- Illex illecebrosus (Lesueur, 1821)
- Illex oxygonius Roper, Lu and Mangold, 1969
- Indochinella pugio (Benson, 1862)
- Indonaia andersoniana (Nevill, 1877)
- Indonaia bonneaudii (Eydoux, 1838)
- Indonaia caerulea (Lea, 1831)
- Indonaia cylindrica (Annandale & Prashad, 1919)
- Indonaia gratiosa (Philippi, 1843)
- Indonaia involuta (Hanley, 1856)
- Indonaia olivaria (Lea, 1831)
- Indonaia rugosa (Gmelin, 1791)
- Indonaia shurtleffiana (Lea, 1856)
- Indonaia subclathrata (Martens, 1899)
- Indonaia substriata (Lea, 1856)
- Indonaia theobaldi (Preston, 1912)
- Indopseudodon bogani (Bolotov, Kondakov & Konopleva in Bolotov et al., 2017)
- Indopseudodon crebristriatus (J. G. Anthony, 1865)
- Indopseudodon indawgyiensis Bolotov, Konopleva, Kondakov & Vikhrev, 2023
- Indopseudodon kayinensis (Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020)
- Indopseudodon salwenianus (Gould, 1844)
- Inflectarius approximans (G. H. Clapp, 1905)
- Inflectarius downieanus (Bland, 1861)
- Inflectarius edentatus (Sampson, 1889)
- Inflectarius ferrissi (Pilsbry, 1897)
- Inflectarius inflectus (Say, 1821)
- Inflectarius kalmianus (Hubricht, 1965)
- Inflectarius magazinensis (Pilsbry and Ferriss, 1907)
- Inflectarius rugeli (Shuttleworth, 1852)
- Inflectarius smithi (G. H. Clapp, 1905)
- Inflectarius subpalliatus (Pilsbry, 1893)
- Inflectarius verus (Hubricht, 1954)
- Iniforis turristhomae (Holten, 1802)
- Inioteuthis capensis Voss, 1962
- Inioteuthis japonica (Tilesius, 1845 in Férussac and D'Orbigny, 1834-1848)
- Inioteuthis maculosa Goodrich, 1896
- Inodrillia acova Bartsch, 1943
- Inodrillia aepynota (Dall, 1889)
- Inodrillia amblytera (Bush, 1893)
- Inodrillia avira Bartsch, 1943
- Inodrillia carpenteri (A. E. Verrill and S. Smith, 1880
- Inodrillia dalli (A. E. Verrill and S. Smith, 1882)
- Inodrillia dido Bartsch, 1943
- Inodrillia gibba Bartsch, 1943
- Inodrillia hatterasensis Bartsch, 1943
- Inodrillia hesperia Bartsch, 1943
- Inodrillia hilda Bartsch, 1943
- Inodrillia ino Bartsch, 1943
- Inodrillia martha Bartsch, 1943
- Inodrillia miamia Bartsch, 1943
- Inodrillia nucleata (Dall, 1881)
- Inodrillia vetula Bartsch, 1943
- Inversidens brandtii (Kobelt, 1879)
- Inversidens pantoensis (Neumayr, 1899)
- Inversidens rentianensis Wu & Wu in Wu et al., 2021
- Inversiunio jokohamensis (Ihering, 1893)
- Inversiunio reinianus (Kobelt, 1879)
- Inversiunio verrucosus Kondo, Hyun & Seung-Ho, 2007
- Inversiunio yanagawensis (Kondo, 1982)
- Io fluvialis (Say, 1825)
- Iothia fulva (O. F. Mueller, 1776)
- Iothia lindbergi J. H. McLean, 1985
- Iphigenia brasiliana (Lamarck, 1818)
- Iphitus robertsi Sabelli and Taviani, 1997
- Ipnobius robustus (Hershler, 1989)
- Iredalea pupoidea
- Iredalea pygmaea
- Iredalea victor
- Irenosyrinx hypomela (Dall, 1889)
- Iridoteuthis iris (Berry, 1909)
- Iridoteuthis maoria Dell, 1959
- Irus irus Schmidt, 1818
- Irusella lamellifera (Conrad, 1837)
- Ischadium recurvum (Rafinesque, 1820)
- Ischnochiton abyssicola
- Ischnochiton alascensis Thiele, 1910
- Ischnochiton albus (Linnaeus, 1767)
- Ischnochiton dilatosculptus Kaas, 1982
- Ischnochiton erythronotus (C. B. Adams, 1845)
- Ischnochiton exaratus (G. O. Sars, 1878)
- Ischnochiton floridanus
- Ischnochiton hartmeyeri Thiele, 1910
- Ischnochiton lividus
- Ischnochiton newcombi Pilsbry, 1892
- Ischnochiton niveus Ferreira, 1987
- Ischnochiton papillosus (C. B. Adams, 1845)
- Ischnochiton pectinatus
- Ischnochiton pseudovirgatus Kaas, 1972
- Ischnochiton purpurascens
- Ischnochiton retiporosus
- Ischnochiton ritteri
- Ischnochiton ruber
- Ischnochiton scrobiculatus (Middendorff, 1847)
- Ischnochiton striolatus (J. E. Gray, 1828)
- Iselica anomala (C. B. Adams, 1850)
- Iselica obtusa (Carpenter, 1864)
- Iselica ovoidea (Gould, 1853)
- Isognomon alatus (Gmelin, 1791)
- Isognomon bicolor (C. B. Adams, 1845)
- Isognomon janus Carpenter, 1857
- Isognomon radiatus (Anton, 1839)
- Isognomon recognitus (Mabille, 1895)
- Isomonia alberti (Dautzenberg and Fischer, 1896)
- Isorobitella trigonalis (Carpenter, 1857)
- Isselia hiloensis
- Ithycythara auberiana (d'Orbigny, 1842)
- Ithycythara cymella (Dall, 1889)
- Ithycythara lanceolata (C. B. Adams, 1850)
- Ithycythara parkeri Abbott, 1958
- Ithycythara pentagonalis (Reeve, 1845)
- Ithycythara psila (Bush, 1885)
- Ividella navisa (Dall and Bartsch, 1907)
- Ividia abbotti (Olsson and McGinty, 1958)
- Ividia havanensis (Pilsbry and Aguayo, 1933)
- Janolus barbarensis (J. G. Cooper, 1863)
- Janolus comis Er. Marcus, 1955
- Janolus cristatus (delle Chiaje, 1841)
- Janolus fuscus O'Donohue, 1924
- Janolus hyalinus (Alder and Hancock, 1854)
- Janolus mucloc (Er. Marcus, 1958)
- Janthina exigua Lamarck, 1816
- Janthina globosa Swainson, 1822
- Janthina janthina (Linnaeus, 1758)
- Janthina pallida W. Thompson, 1840
- Japetella diaphana Hoyle, 1885
- Japetella heathi (Berry, 1911)
- Japonactaeon pusillus (Forbes, 1843)
- Jaspidella blanesi (Ford, 1898)
- Jaspidella jaspidea (Gmelin, 1791)
- Jaspidella miris Olsson, 1956
- Jorunna pardus Behrens and R. Henderson, 1981
- Jorunna tomentosa (Cuvier, 1804)
- Jouannetia quillingi Turner, 1955
- Joubiniteuthis portieri (Joubin, 1916)
- Juga acutifilosa (Stearns, 1890)
- Juga bulbosa (Gould, 1847)
- Juga chacei (Henderson, 1935)
- Juga hemphilli (J. Henderson, 1935)
- Juga interioris (Goodrich, 1944)
- Juga laurae (Goodrich, 1944)
- Juga newberryi (Lea, 1860)
- Juga nigrina (Lea, 1856)
- Juga occata (Hinds, 1844)
- Juga plicifera (Lea, 1838)
- Juga shastaensis (Lea, 1856)
- Juga silicula (Gould, 1847)
- Jujubinus exasperatus (Pennant, 1777)
- Jujubinus miliaris (Brocchi, 1814)
- Jujubinus montagui (W. Wood, 1828)
- Jujubinus striatus (Linnaeus, 1758)
- Juliacorbula cubaniana (d'Orbigny, 1842)
- Juliacorbula luteola (Carpenter, 1864)
- Juturnia kosteri (Taylor, 1987)
- Juturnia tularosae Hershler, Liu and Stockwell, 2002
- Juvenichiton deplanatus (Sirenko, 1975)
- Juvenichiton grandispina (Sirenko, 1975)
- Juvenichiton saccharinus (Dall, 1878)
- Kaiparapelta askewi J. H. McLean and Harasewych, 1995
- Kaloplocamus ramosus (Cantraine, 1835)
- Kaloplocamus verrilli Martynov, 2002
- Katharina tunicata (W. Wood, 1815)
- Kelletia kelletii (Forbes, 1850)
- Kellia cycladea S. V. Wood, 1844
- Kellia suborbicularis (Montagu, 1803)
- Kelliella galatheae
- Kelliella miliaris (Philippi, 1844)
- Kelliella nitida
- Kermia brunnea
- Kermia cylindrica
- Kermia daedalea
- Kermia producta
- Kermia pumilia
- Khairuloconcha lunbawangorum Zieritz, Rahim, Taha & Pfeiffer in Zieritz et al., 2021
- Khairuloconcha sahanae Zieritz, Jainih & Lopes-Lima in Zieritz et al., 2021
- Kleinella cedrosa (Dall, 1884)
- Koloonella hawaiiensis
- Kondakovia longimana Filippova, 1972
- Koreosolenaia sitgyensis Lee, Kim, Lopes-Lima & Bogan in Lopes-Lima et al., 2020
- Kryptos koehleri (Locard, 1896)
- Kurtzia arteaga (Dall and Bartsch, 1910)
- Kurtziella accincta (Montagu, 1808)
- Kurtziella atrostyla (Tryon, 1884)
- Kurtziella beta (Dall, 1919)
- Kurtziella cerina (Kurtz and Stimpson, 1851)
- Kurtziella citronella (Dall, 1886)
- Kurtziella diomedea Bartsch and Rehder, 1939
- Kurtziella dorvilliae (Reeve, 1845)
- Kurtziella limonitella (Dall, 1884)
- Kurtziella newcombei (Dall, 1919)
- Kurtziella perryae Bartsch and Rehder, 1939
- Kurtziella plumbea (Hinds, 1843)
- Kurtziella rubella (Kurtz and Stimpson, 1851)
- Kurtziella serga (Dall, 1881)
- Kurtziella variegata (Carpenter, 1864)
- Kurtzina beta (Dall, 1919)
- Kylix halocydne (Dall, 1919)
- Lacteoluna selenina (Gould, 1848)
- Lacuna carinata Gould, 1848
- Lacuna crassior (Montagu, 1803)
- Lacuna marmorata Dall, 1919
- Lacuna neritoidea Gould, 1840
- Lacuna pallidula (E. M. da Costa, 1778)
- Lacuna parva (E. M. da Costa, 1778)
- Lacuna porrecta Carpenter, 1864
- Lacuna succinea S. S. Berry, 1953
- Lacuna unifasciata Carpenter, 1856
- Lacuna vaginata (Dall, 1918)
- Lacuna variegata Carpenter, 1864
- Lacuna vincta (Montagu, 1803)
- Laemodonta cubensis (Pfeiffer, 1854)
- Laevapex fuscus (C. B. Adams, 1841)
- Laevicardium crassum
- Laevicardium elatum (G. B. Sowerby I, 1833)
- Laevicardium laevigatum (Linnaeus, 1758)
- Laevicardium mortoni (Conrad, 1830)
- Laevicardium pictum (Ravenel, 1861)
- Laevicardium substriatum (Conrad, 1837)
- Laevicardium sybariticum (Dall, 1886)
- Laevicaulis alte (Ferussac, 1821)
- Laevichlamys multisquamata (Dunker, 1864)
- Laevicordia horrida Allen and Turner, 1974
- Laevidentalium callipeplum (Dall, 1889)
- Laevidentalium caudani (Locard, 1886)
- Laevidentalium didymum (Watson, 1879)
- Laevidentalium incertum (Deshayes, 1825)
- Laevidentalium rectius (Carpenter, 1864)
- Laevinesta atlantica (Perez Farfante, 1947)
- Laevipilina hyalina J. H. McLean, 1979
- Laila cockerelli MacFarland, 1905
- Lamellaria diegoensis Dall, 1885
- Lamellaria digueti Rochebrune, 1895
- Lamellaria koto Schwengel, 1944
- Lamellaria latens
- Lamellaria leucosphaera Schwengel, 1942
- Lamellaria pellucida Verrill, 1880
- Lamellaria perspicua (Linnaeus, 1758)
- Lamellaria rhombica Dall, 1871
- Lamellaria stearnsii (Dall, 1871)
- Lamellaxis clavulinus (Potiez and Michaud, 1838)
- Lamellaxis gracilis (Hutton, 1834)
- Lamellaxis mauritianus (Pfeiffer, 1952)
- Lamellaxis micra (d'Orbigny, 1835)
- Lamellidens candaharicus (Hutton, 1849)
- Lamellidens chindwinensis Bolotov, Konopleva, Chan, Lunn, Win, Gofarov, Kondakov, Tomilova & Vikhrev, 2022
- Lamellidens corrianus (Lea, 1834)
- Lamellidens ferrugineus (Annandale, 1918)
- Lamellidens friersoni (Simpson, 1914)
- Lamellidens generosus (Gould, 1847)
- Lamellidens jenkinsianus (Benson, 1862)
- Lamellidens lamellatus (Lea, 1838)
- Lamellidens mainwaringi Preston, 1912
- Lamellidens marginalis (Lamarck, 1819)
- Lamellidens nongyangensis Preston, 1912
- Lamellidens savadiensis (Nevill, 1877)
- Lamellidens unioides Nesemann & Sharma in Nesemann et al., 2007
- Lamellidoris aspera Alder and Henderson, 1842
- Lamellidoris diademata (Gould, 1870)
- Lamellidoris diaphana Adler and Hancock, 1845
- Lamellidoris fusca (Muller, 1776)
- Lamellidoris grisea (Gould, 1870)
- Lamellidoris muricata (Muller, 1776)
- Lamellidoris oblongata
- Lamellidoris pusilla
- Lamellidoris tenella (Gould, 1870)
- Lamellidoris varians
- Lamellitrochus carinatus Quinn, 1991
- Lamellitrochus inceratus Quinn, 1991
- Lamellitrochus lamellosus (A. E. Verrill and S. Smith, 1880)
- Lametila abyssorum
- Lampadioteuthis megaleia Berry, 1916
- Lampeia adamsi (MacGinitie, 1959)
- Lamproscapha ensiformis (Spix & Wagner, 1827)
- Lamproscapha falsa (Simpson, 1900)
- Lamprotula bazini (Heude, 1877)
- Lamprotula blaisei (Dautzenberg & Fischer, 1905)
- Lamprotula caveata (Heude, 1877)
- Lamprotula chiai Chow, 1958
- Lamprotula cornuumlunae (Heude, 1883)
- Lamprotula divergens (Benson in Cantor, 1842)
- Lamprotula elongata Liu, Zhang & Wang, 1980
- Lamprotula kouangensis (Simpson, 1900)
- Lamprotula leaii (Griffith & Pidgeon, 1833)
- Lamprotula linae Zhuang & Jing, 2013
- Lamprotula microsticta (Heude, 1877)
- Lamprotula nanningensis (Qian, Fang & He, 2015)
- Lamprotula paschalis (Heude, 1883)
- Lamprotula plumbea (Chemnitz, 1795)
- Lamprotula salaputium (Martens, 1902)
- Lamprotula seomjinensis (Kondo, Hyun & Seung-Ho, 2007)
- Lamprotula triclava (Heude, 1877)
- Lampsilis abrupta (Say, 1831)
- Lampsilis bergmanni Inoue & Randklev, 2020
- Lampsilis binominata Simpson, 1900
- Lampsilis bracteata (Gould, 1855)
- Lampsilis brittsi Simpson, 1900
- Lampsilis cardium Rafinesque, 1820
- Lampsilis cariosa (Say, 1817)
- Lampsilis dolabraeformis (Lea, 1838)
- Lampsilis fasciola Rafinesque, 1820
- Lampsilis floridensis (Lea, 1852)
- Lampsilis higginsii (Lea, 1857)
- Lampsilis hydiana (Lea, 1838)
- Lampsilis ornata (Conrad, 1835)
- Lampsilis ovata (Say, 1817)
- Lampsilis powellii (Lea, 1852)
- Lampsilis radiata (Gmelin, 1791)
- Lampsilis rafinesqueana Frierson, 1927
- Lampsilis reeveiana (Lea, 1852)
- Lampsilis satura (Lea, 1852)
- Lampsilis sietmani Keogh & Simons, 2019
- Lampsilis siliquoidea (Barnes, 1823)
- Lampsilis splendida (Lea, 1838)
- Lampsilis straminea (Conrad, 1834)
- Lampsilis streckeri Frierson, 1927
- Lampsilis teres (Rafinesque, 1820)
- Lampsilis virescens (Lea, 1858)
- Lanceolaria acrorrhyncha (Martens, 1894)
- Lanceolaria bilirata (Martens, 1902)
- Lanceolaria cylindrica (Simpson, 1900)
- Lanceolaria eucylindrica Lin, 1962
- Lanceolaria fruhstorferi (Dautzenberg, 1900)
- Lanceolaria gladiola (Heude, 1877)
- Lanceolaria grayii (Griffith & Pidgeon, 1833)
- Lanceolaria kihirai Kondo & Hattori, 2019
- Lanceolaria laevis (Martens, 1902)
- Lanceolaria lanceolata (Lea, 1856)
- Lanceolaria oxyrhyncha (Martens, 1861)
- Lanceolaria triformis (Heude, 1877)
- Lanceolaria yueyingae Zhuang & Jing, 2013
- Lanx alta (Tryon, 1865)
- Lanx patelloides (Lea, 1856)
- Lapinura divae (Ev. Marcus and Er. Marcus, 1963)
- Lasaea adansoni (Gmelin, 1791)
- Lasaea cistula Keen, 1938
- Lasaea rubra (Montagu, 1803)
- Lasaea subviridis Dall, 1899
- Lasmigona alabamensis Clarke, 1985
- Lasmigona complanata (Barnes, 1823)
- Lasmigona compressa (Lea, 1829)
- Lasmigona costata (Rafinesque, 1820)
- Lasmigona decorata (Lea, 1852)
- Lasmigona holstonia (Lea, 1838)
- Lasmigona subviridis (Conrad, 1835)
- Latiaxis babelis (Requien, 1849)
- Latiaxis costatus (Blainville, 1832)
- Latiaxis dalli (Emerson and D'Attilio, 1963)
- Latiaxis juliae Clench and Aquayo, 1939
- Latiaxis kincaidi Dall, 1919
- Latiaxis mansfieldi (McGinty, 1940)
- Latirus angulatus (Roding, 1798)
- Latirus carinifer Lamarck, 1822
- Latirus infundibulum (Gmelin, 1791)
- Latirus nematus Woodring, 1928
- Laurentiphysa chippevarum Taylor, 2003
- Leachia atlantica (Degner, 1925)
- Leachia cyclura Lesueur, 1821
- Leachia ellipsoptera (Adams and Reeve, 1848)
- Leachia pacifica (Issel, 1908)
- Leachia rynchophorus (Rochebrune, 1884)
- Learchis poica Ev. Marcus and Er. Marcus, 1960
- Leaunio lienosus (Conrad, 1834)
- Leaunio ortmanni (Walker, 1925)
- Leaunio pataecus Watters, 2018
- Leaunio umbrans (Lea, 1857)
- Leaunio vanuxemensis (Lea, 1838)
- Ledella acuminata (Jeffreys, 1870)
- Ledella fiascona (Dall, 1916)
- Ledella galatheae Knudsen, 1970
- Ledella pustulosa (Jeffreys, 1876)
- Ledella similis Allen and Hannah, 1989
- Ledella sublevis Verrill and Bush, 1898
- Ledella ultima (E. A. Smith, 1885)
- Leguminaia anatolica Gürlek, Kebapci and Lopes-Lima in Lopes-Lima et al., 2021
- Leguminaia saulcyi (Bourguignat, 1852)
- Leguminaia wheatleyi (Lea, 1862)
- Lehmannia valentiana (Ferussac, 1821)
- Leidyula floridana (Leidy, 1851)
- Leidyula kraussi (Ferussac, 1823)
- Leidyula moreleti (Crosse and P. Fischer, 1872)
- Leidyula sloani (Cuvier, 1816)
- Leila blainvilliana (Lea, 1834)
- Leila esula (d'Orbigny, 1835)
- Leiomya claviculata (Dall, 1881)
- Leiomya halimera Dall, 1886
- Leiomya striatella Verrill and Bush, 1898
- Lemiox rimosus (Rafinesque, 1831)
- Lens comptus (Deshayes in Deshayes & Jullien, 1876)
- Lens contradens (Lea, 1838)
- Lens eximius (Lea, 1856)
- Lens fultoni (Haas, 1930)
- Lens inornatus (Lea, 1856)
- Lens lugens (Drouët & Chaper, 1892)
- Lens maenamensis Pfeiffer, Graf, Cummings & Page, 2021
- Lens micropterus (Morelet, 1866)
- Lens misellus (Morelet, 1865)
- Lens novoselovi (Konopleva, Bolotov, Spitsyn, Kondakov, Gofarov & Vikhrev, 2019)
- Lens pallegoixi (Sowerby, 1867)
- Lens rolfbrandti (Jeratthitikul & Panha in Jeratthitikul et al., 2019)
- Lens semmelinki (Martens, 1891)
- Leoparreysia burmana (Blanford, 1869)
- Leoparreysia canefrii Vikhrev, Bolotov & Aksenova in Bolotov et al., 2017
- Leoparreysia olivacea (Prashad, 1930)
- Leoparreysia perconvexa (Preston, 1912)
- Leoparreysia subcircularis (Brandt, 1974)
- Leoparreysia tavoyensis (Gould, 1843)
- Leoparreysia vulcanus (Hanley, 1876)
- Leoparreysia whitteni Bolotov, Konopleva, Vikhrev, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2019
- Lepeta alba (Dall, 1869)
- Lepeta caeca (Muller, 1776)
- Lepeta caecoides Carpenter, 1865
- Lepeta concentrica Middendorff, 1851
- Lepetella laterocompressa (Rayneval and Ponzi, 1854)
- Lepetella tubicola Verrill, 1880
- Lepidochitona aleutica (Dall, 1879)
- Lepidochitona beanii (Carpenter, 1864)
- Lepidochitona berryana Eernisse, 1986
- Lepidochitona caverna Eernisse, 1986
- Lepidochitona cinerea (Linnaeus, 1767)
- Lepidochitona dentiens (Gould, 1846)
- Lepidochitona fernaldi Eernisse, 1986
- Lepidochitona flectens (Carpenter, 1864)
- Lepidochitona gothica (Carpenter, 1864)
- Lepidochitona hartwegii (Carpenter, 1855)
- Lepidochitona keepiana S. S. Berry, 1948
- Lepidochitona liozonis (Dall and Simpson, 1901)
- Lepidochitona lowei (Pilsbry, 1918)
- Lepidochitona semilirata (S. S. Berry, 1927)
- Lepidochitona sharpeii
- Lepidochitona thamnopora (S. S. Berry, 1911)
- Lepidochitona thomasi (Pilsbry, 1898)
- Lepidodesma aligera (Heude, 1877)
- Lepidodesma languilati (Heude, 1874)
- Lepidopleurus asellus
- Lepidopleurus cajetanus (Poli, 1791)
- Lepidopleurus cancellatus
- Lepidopleurus pergranatus
- Lepidoteuthis grimaldii Joubin, 1895
- Lepidozona abyssicola (A. G. Smith and Cowan, 1966)
- Lepidozona allyni (Ferreira, 1977)
- Lepidozona beringiana Clark, 2000
- Lepidozona cooperi (Dall, 1879)
- Lepidozona ima Sirenko, 1975
- Lepidozona interstincta (Gould, 1846)
- Lepidozona mertensii (Middendorff, 1847)
- Lepidozona pectinulata (Carpenter, 1893)
- Lepidozona regularis (Carpenter, 1855)
- Lepidozona retiporosa (Carpenter, 1864)
- Lepidozona scabricostata (Carpenter, 1864)
- Lepidozona serrata (Carpenter, 1864)
- Lepidozona sinudentata (Carpenter, 1892)
- Lepidozona trifida (Carpenter, 1864)
- Lepidozona willetti (S. S. Berry, 1917)
- Leporimetis intastriata (Say, 1827)
- Leporimetis obesa (Deshayes, 1855)
- Leptadrillia cookei (E. A. Smith, 1888)
- Leptaxinus incrassatus (Jeffreys, 1876)
- Leptaxinus minutus A. E. Verrill and Bush, 1898
- Leptochiton alveolus (M. Sars in Lovén, 1846)
- Leptochiton arcticus (G. O. Sars, 1878)
- Leptochiton asellus (Gmelin, 1791)
- Leptochiton belknapi Dall, 1878
- Leptochiton cancellatus Sowerby, 1840
- Leptochiton dentiens
- Leptochiton gascognensis Kaas and Belle, 1985
- Leptochiton internexus
- Leptochiton leloupi Kaas, 1979
- Leptochiton nexus Carpenter, 1864
- Leptochiton oldroydi
- Leptochiton rarinota (Jeffreys, 1882)
- Leptochiton rugatus (Pilsbry, 1892)
- Leptochiton sarsi Kaas, 1981
- Leptochiton scabridus (Jeffreys, 1880)
- Leptochiton tenuis Kaas, 1979
- Leptogyra alaskana Bartsch, 1910
- Leptogyra eritmeta Bush, 1897
- Leptogyra inconspicua Bush, 1897
- Leptogyra verrilli Bush, 1897
- Lepton lacerum (Jeffreys, 1872)
- Lepton lepidum Say, 1826
- Lepton meroeum Carpenter, 1864
- Lepton nitidum
- Lepton squamosum (Montagu, 1803)
- Leptopecten bavayi (Dautzenberg, 1900)
- Leptopecten camerella (S. S. Berry, 1968)
- Leptopecten latiauratus (Conrad, 1837)
- Leptopecten tumbezensis (Orbigny, 1846)
- Leptopecten velero (Hertlein, 1935)
- Leptothyra candida
- Leptothyra rubricincta
- Leptothyra sandwicensis Linnaeus, 1758
- Leptothyra verruca
- Leptoxis ampla (Anthony, 1855)
- Leptoxis arkansensis (Hinkley, 1915)
- Leptoxis carinata (Bruguiere, 1792)
- Leptoxis clipeata (H. H. Smith in Goodrich, 1922)
- Leptoxis compacta (Anthony, 1854)
- Leptoxis coosaensis (Lea, 1861)
- Leptoxis dilatata (Conrad, 1835)
- Leptoxis foremani (Lea, 1843)
- Leptoxis formosa (Lea, 1860)
- Leptoxis ligata (Anthony, 1860)
- Leptoxis lirata (H. H. Smith in Goodrich, 1922)
- Leptoxis minor (Hinkley, 1912)
- Leptoxis occultata (H. H. Smith in Goodrich, 1922)
- Leptoxis picta (Conrad, 1834)
- Leptoxis plicata (Conrad, 1834)
- Leptoxis praerosa (Say, 1821)
- Leptoxis showalterii (Lea, 1860)
- Leptoxis torrefacta (H. H. Smith in Goodrich, 1922)
- Leptoxis trilineata (Say, 1829)
- Leptoxis umbilicata (Wetherby, 1876)
- Leptoxis virgata (Lea, 1841)
- Leptoxis vittata (Lea, 1860)
- Lepyrium showalteri (Lea, 1861)
- Leuconopsis novimundi (Pilsbry and McGinty, 1949)
- Leucophytia bidentata
- Leucosyrinx circinata
- Leucosyrinx crebricostata
- Leucosyrinx kincaidi Dall, 1919
- Leucosyrinx verrilli (Dall, 1881)
- Leucozonia jacarusoi Petuch, 1987
- Leucozonia nassa (Gmelin, 1791)
- Leucozonia ocellata (Gmelin, 1791)
- Leurolepas roseola J. H. McLean, 1970
- Lienardia apiculata
- Lienardia balteata
- Lienardia crassicostata
- Lienardia fenestrata
- Lienardia lutea
- Lienardia mighelsi
- Ligumia recta (Lamarck, 1819)
- Liguriella pardus (Berry, 1916)
- Liguriella podophthalma Issel, 1908
- Liguus fasciatus (Muller, 1774)
- Lima attenuata (Dall, 1916)
- Lima excavata (Fabricius, 1779)
- Lima floridana Olsson and Harbison, 1953
- Lima hians (Gmelin, 1791)
- Lima hyperborea Jensen, 1909
- Lima lima (Linnaeus, 1758)
- Lima locklini McGinty, 1955
- Lima loscombi
- Lima pellucida C. B. Adams, 1846
- Lima sabauriculata (Montagu, 1808)
- Lima scabra (Born, 1778)
- Lima subovata (Jeffreys, 1879)
- Lima tenera Sowerby, 1843
- Limacia clavigera
- Limacina bulimoides (d'Orbigny, 1836)
- Limacina helicina (Phipps, 1774)
- Limacina helicoides Jeffreys, 1877
- Limacina inflata (d'Orbigny, 1836)
- Limacina lesueurii (d'Orbigny, 1836)
- Limacina retroversa (Fleming, 1823)
- Limacina trochiformis (d'Orbigny, 1836)
- Limapontia capitata (O. F. Mueller, 1774)
- Limapontia depressa Alder and Hancock, 1862
- Limapontia nigra Muller, 1773
- Limapontia senestra (Quatrefages, 1844)
- Limapontia zonata (Girard, 1852)
- Limaria hemphilli (Hertlein and Strong, 1946)
- Limaria hians (Gmelin, 1791)
- Limaria loscombi (G. B. Sowerby, I, 1823)
- Limaria pellucida (C. B. Adams, 1846)
- Limatula attenuata Dall, 1916
- Limatula confusa (E. A. Smith, 1885)
- Limatula gwyni (Sykes, 1903)
- Limatula hendersoni Olsson and McGinty, 1958
- Limatula hyalina A. E. Verrill and Bush, 1898
- Limatula hyperborea A. S. Jensen, 1909
- Limatula japonica A. Adams, 1864
- Limatula regularis A. E. Verrill and Bush, 1898
- Limatula saturna Bernard, 1978
- Limatula setifera Dall, 1886
- Limatula similaris (Dall, 1908)
- Limatula subauriculata (Montagu, 1808)
- Limatula subovata (Jeffreys, 1876)
- Limatula sulcata (Brown, 1827)
- Limatula vancouverensis Bernard, 1978
- Limax flavus Linnaeus, 1758
- Limax marginatus Muller, 1774
- Limax maximus Linnaeus, 1758
- Limax nyctelius Bourguignat, 1861
- Limax valentianus Férussac, 1823
- Limea bronniana Dall, 1886
- Limea sarsii (Loven, 1846)
- Limea subovata (Jeffreys, 1876)
- Limifossor fratula Heath, 1911
- Limifossor talpoideus Heath, 1911
- Limopsis affinis Verrill, 1885
- Limopsis akutanica Dall, 1916
- Limopsis antillensis Dall, 1881
- Limopsis aurita (Brocchi, 1814)
- Limopsis cristata Jeffreys, 1876
- Limopsis diegensis Dall, 1908
- Limopsis minuta Philippi, 1836
- Limopsis onchodes Dall, 1927
- Limopsis panamensis Dall, 1902
- Limopsis pelagica E. A. Smith, 1885
- Limopsis plana Verrill, 1882
- Limopsis radialis Dall, 1927
- Limopsis skenea Dall, 1916
- Limopsis sulcata A. E. Verrill and Bush, 1898
- Limopsis surinamensis
- Limopsis tenella Jeffreys, 1876
- Limopsis waikikia
- Linatella caudata (Gmelin, 1791)
- Lindapecten exasperatus (G. B. Sowerby II, 1842)
- Lindapecten lindae Petuch, 1995
- Lindapecten muscosus (W. Wood, 1828)
- Linga amiantus (Dall, 1886)
- Linga cancellaris (Philippi, 1846)
- Linga columbella Lamarck, 1819
- Linga excavata (Carpenter, 1857)
- Linga leucocyma Dall, 1886
- Linga leucocymoides (Lowe, 1935)
- Linga pensylvanica (Linnaeus, 1758)
- Linga sombrerensis (Dall, 1886)
- Linga undatoides (Hertlein and Strong, 1945)
- Linisa tamaulipasensis (I. Lea, 1857)
- Linisa texasiana (Moricand, 1833)
- Lioberus castaneus (Say, 1822)
- Liocranchia gardineri Robson, 1921
- Liocranchia reinhardti (Steenstrup, 1856)
- Liocranchia valdiviae Chun, 1910
- Liocyma fluctuosum (Gould, 1841)
- Liomesus nassula Dall, 1901
- Liomesus stimpsoni Dall, 1889
- Lioplax cyclostomaformis (Lea, 1841)
- Lioplax pilsbryi Walker, 1905
- Lioplax subcarinata (Say, 1817)
- Lioplax sulculosa (Menke, 1827)
- Liostomia eburnea (Stimpson, 1851)
- Liotia adnirabilis E. A. Smith, 1890
- Liotia cancellata (Gray, 1828)
- Liotia fenestrata Carpenter, 1864
- Liotia lurida Dall, 1913
- Liotia microgrammata Dall, 1927
- Lirabuccinum dirum (Reeve, 1846)
- Lirobarleeia kelseyi (Dall and Bartsch, 1902)
- Lirobittium armillatum (Carpenter, 1864)
- Lirobittium attenuatum (Carpenter, 1864)
- Lirobittium fetellum (Bartsch, 1911)
- Lirobittium interfossum (Carpenter, 1864)
- Lirobittium johnstonae Bartsch, 1911
- Lirobittium larum (Bartsch, 1911)
- Lirobittium lomaense (Bartsch, 1911)
- Lirobittium munitum (Carpenter, 1864)
- Lirobittium oldroydae Bartsch, 1911
- Lirobittium purpureum (Carpenter, 1864)
- Lirobittium quadrifilatum (Carpenter, 1864)
- Lirobittium rugatum (Carpenter, 1864)
- Lirobittium serra Bartsch, 1917
- Lirophora clenchi (Pulley, 1952)
- Lirophora latilirata (Conrad, 1841)
- Lirularia acuticostata (Carpenter, 1864)
- Lirularia bicostata (J. H. McLean, 1964)
- Lirularia discors J. H. McLean, 1984
- Lirularia lirulata (Carpenter, 1864)
- Lirularia optabilis (Carpenter, 1864)
- Lirularia parcipicta (Carpenter, 1864)
- Lirularia succincta (Carpenter, 1864)
- Lischkeia actinophora (Dall, 1890)
- Lischkeia calatha
- Lischkeia carlotta (Dall, 1902)
- Lischkeia ceratophora (Dall, 1896)
- Lischkeia cidaris (Carpenter, 1864)
- Lischkeia equatorialis (Dall, 1896)
- Lischkeia imperialis (Dall, 1881)
- Lischkeia ottoi (Philippi, 1844)
- Lissodrillia schroederi (Bartsch and Rehder, 1939)
- Lissodrillia simpsoni (Dall, 1887)
- Lithasia armigera (Say, 1821)
- Lithasia curta Lea, 1868
- Lithasia duttoniana (Lea, 1841)
- Lithasia geniculata Haldeman, 1840
- Lithasia hubrichti Clench, 1956
- Lithasia jayana (Lea, 1841)
- Lithasia lima (Conrad, 1834)
- Lithasia obovata (Say, 1829)
- Lithasia salebrosa (Conrad, 1834)
- Lithasia spicula Minton, Savarese and Campbell, 2005
- Lithasia verrucosa (Rafinesque, 1820)
- Lithophaga antillarum (d'Orbigny, 1842)
- Lithophaga aristata (Dillwyn, 1817)
- Lithophaga attenuata (Deshayes, 1836)
- Lithophaga bisulcata (d'Orbigny, 1842)
- Lithophaga nigra (d'Orbigny, 1842)
- Lithophaga plumula (Hanley, 1844)
- Lithophaga rogersi S. S. Berry, 1957
- Lithopoma americanum (Gmelin, 1791)
- Lithopoma caelatum (Gmelin, 1791)
- Lithopoma gibberosa (Dillwyn, 1817)
- Lithopoma tectum (Lightfoot, 1786)
- Lithopoma tuber (Linnaeus, 1767)
- Litiopa melanostoma Rang, 1829
- Littoraria angulifera (Lamarck, 1822)
- Littoraria irrorata (Say, 1822)
- Littoraria nebulosa (Lamarck, 1822)
- Littoraria tessellata (Philippi, 1847)
- Littoridina crosseana (Pilsbry, 1910)
- Littoridinops monroensis (Frauenfeld, 1863)
- Littoridinops palustris F. G. Thompson, 1968
- Littoridinops tenuipes (Couper, 1844)
- Littorina albicarinata Mclean, 1970
- Littorina aleutica Dall, 1872
- Littorina angulifera (Lamarck, 1822)
- Littorina angustior (Morch, 1876)
- Littorina arcana Ellis, 1978
- Littorina aspera Philippi, 1846
- Littorina atkana
- Littorina fasciata Gray, 1839
- Littorina flava King and Broderip, 1832
- Littorina irrorata (Say, 1822)
- Littorina keenae Rosewater, 1978
- Littorina lineolata D'Orbigny, 1840
- Littorina littorea (Linnaeus, 1758)
- Littorina mariae Sacchi and Rastelli, 1966
- Littorina meleagris (Potiez and Michaud, 1838)
- Littorina mespillum (Muhlfeld, 1824)
- Littorina modesta Philippi, 1846
- Littorina nebulosa (Lamarck, 1822)
- Littorina neglecta Bean, 1844
- Littorina neritoides
- Littorina nigrolineata J. E. Gray, 1839
- Littorina obtusata (Linnaeus, 1758)
- Littorina pintado
- Littorina planaxis Philippi, 1847
- Littorina plena Gould, 1849
- Littorina pullata Carpenter, 1864
- Littorina saxatilis (Olivi, 1792)
- Littorina scabra (Linnaeus, 1758)
- Littorina scutulata Gould, 1849
- Littorina sitkana Philippi, 1846
- Littorina squalida Broderip and G. B. Sowerby I, 1829
- Littorina striata (Vallot, 1801)
- Littorina subrotundata (Carpenter, 1864)
- Littorina zebra
- Littorina ziczac (Gmelin, 1791)
- Lobiger souverbii P. Fischer, 1857
- Lobosculum pustula (Ferussac, 1832)
- Lobosculum pustuloides (Bland, 1858)
- Loligo africana (Adam, 1950)
- Loligo bleekeri Keferstein, 1866
- Loligo forbesii Steenstrup, 1856
- Loligo gahi D'Orbigny, 1835 in 1834-1847
- Loligo media (Linnaeus, 1758)
- Loligo ocula Cohen, 1976
- Loligo opalescens Berry, 1911
- Loligo pealeii Lesueur, 1821
- Loligo pickfordi (Adam, 1954)
- Loligo plei Blainville, 1823
- Loligo roperi Cohen, 1976
- Loligo sanpaulensis Brakoniecki, 1984
- Loligo subulata Lamarck, 1798
- Loligo surinamensis Voss, 1974
- Loligo vietnamensis Nguyen, 1994
- Loligo vulgaris Lamarck, 1798
- Loliolus affinis Steenstrup, 1856
- Loliolus beka (Sasaki, 1929)
- Loliolus hardwickei (Gray, 1849)
- Loliolus japonica (Hoyle, 1885)
- Loliolus sumatrensis (D'Orbigny, 1835 in Férussac and D'Orbigny, 1834-1848)
- Loliolus uyii (Wakiya and Ishikawa, 1921)
- Lolliguncula argus Brakoniecki and Roper, 1985
- Lolliguncula brevis (Blainville, 1823)
- Lolliguncula diomedeae (Hoyle, 1904)
- Lolliguncula mercatoris Adam, 1941
- Lolliguncula panamensis Berry, 1911
- Lomanotus genei Verany, 1846
- Lomanotus marmoratus (Alder and Hancock, 1845)
- Lomanotus stauberi K. B. Clark and Goetzfried, 1976
- Lomanotus vermiformis Eliot, 1908
- Lopha cristagalli (Linnaeus)
- Lophodoris danielsseni (Friele and Hansen, 1876)
- Lora albrechti Krause, 1885
- Lora alitakensis
- Lora althorpensis
- Lora amiata
- Lora arctica (A. Adams, 1855)
- Lora cancellata
- Lora chiachiana
- Lora elegans (Moller, 1842)
- Lora fiora
- Lora galgana
- Lora healyi
- Lora inflata
- Lora kyskana
- Lora laevigata (Dall, 1871)
- Lora lawrenciana
- Lora luetkeni
- Lora mitrata
- Lora morchi Leche, 1878
- Lora murdochiana (Dall, 1885)
- Lora nobilis
- Lora nodulosa (Krause, 1885)
- Lora novaiasemliensis (Leche, 1878)
- Lora pavlova
- Lora quadra
- Lora rassina
- Lora reticulata
- Lora rugulata
- Lora scalaris
- Lora simplex (Middendorff, 1849)
- Lora solida (Dall, 1887)
- Lora tenuissima
- Lora turricula
- Lora woodiana (Moller, 1842)
- Loripes lucinalis (Lamarck, 1818)
- Lortiella froggatti Iredale, 1934
- Lortiella opertanea Ponder & Bayer, 2004
- Lortiella rugata (Sowerby, 1868)
- Lottia alveus (Conrad, 1831)
- Lottia asmi (Middendorff, 1847)
- Lottia borealis (Lindberg, 1982)
- Lottia conus (Test, 1945)
- Lottia digitalis (Rathke, 1833)
- Lottia gigantea G. B. Sowerby I, 1834
- Lottia instabilis (Gould, 1846)
- Lottia jamaicensis (Gmelin, 1791)
- Lottia leucopleura (Gmelin, 1791)
- Lottia limatula (Carpenter, 1864)
- Lottia ochracea (Dall, 1871)
- Lottia painei Lindberg, 1987
- Lottia pelta (Rathke, 1833)
- Lottia scabra (Gould, 1846)
- Lottia strigatella (Carpenter, 1864)
- Lottia triangularis (Carpenter, 1864)
- Lucapina aegis (Reeve, 1850)
- Lucapina eolis Perez Farfante, 1945
- Lucapina philippiana (Finlay, 1930)
- Lucapina sowerbii (G. B. Sowerby II, 1835)
- Lucapina suffusa (Reeve, 1850)
- Lucapinella aequalis (Sowerby, 1835)
- Lucapinella callomarginata (Dall, 1871)
- Lucapinella delicata Usticke, 1969
- Lucapinella eleanorae J. H. McLean, 1967
- Lucapinella henseli (Von Martens, 1900)
- Lucapinella limatula (Reeve, 1850)
- Lucapinella milleri S. S. Berry, 1959
- Lucidella tantilla Pilsbry, 1902
- Lucina amianta (Dall, 1901)
- Lucina bermudensis Dall, 1901
- Lucina excavata
- Lucina fenestrata Hinds, 1845
- Lucina floridana Conrad, 1833
- Lucina keenae Chavan, 1971
- Lucina leucocyma Dall, 1886
- Lucina muricata (Sprengler, 1798)
- Lucina nassula (Conrad, 1846)
- Lucina nuttalli (Conrad, 1791)
- Lucina pectinata (Gmelin, 1791)
- Lucina pensylvanica (Linnaeus, 1758)
- Lucina radians (Conrad, 1841)
- Lucina sombrerensis Dall, 1886
- Lucina trisulcata Conrad, 1841
- Lucinella divaricata (Linnaeus, 1758)
- Lucinisca muricata (Spengler, 1798)
- Lucinisca nassula (Conrad, 1846)
- Lucinisca nuttalli (Conrad, 1837)
- Lucinoma aequizonatum (Stearns, 1890)
- Lucinoma annulatum (Reeve, 1850)
- Lucinoma atlantis R. A. Mclean, 1936
- Lucinoma blakeanum (Bush, 1893)
- Lucinoma borealis
- Lucinoma filosa (Stimpson, 1851)
- Lucinoma filosum (Stimpson, 1851)
- Lucinoma heroica (Dall, 1901)
- Lunatia fringilla (Dall, 1881)
- Lunatia laevicula (Verrill, 1880)
- Lunatia politiana (Dall, 1919)
- Lusitanops cingulata Bouchet and Waren, 1980
- Lusitanops expansa (G. O. Sars, 1878)
- Lusitanops hyaloides (Dautzenberg, 1925)
- Lusitanops sigmoidea Bouchet and Waren, 1980
- Lussivolutopsius filosus (Dall, 1919)
- Lutraria alderi
- Lutraria angustior Philippi, 1844
- Lutraria lutraria (Linnaeus, 1758)
- Lutraria magna
- Luzonia walleri (Bernard, 1989)
- Lycoteuthis lorigera (Steenstrup, 1875)
- Lycoteuthis springeri (Voss, 1956)
- Lymnaea atkaensis Dall, 1884
- Lymnaea palustris (O. F. Müller, 1774)
- Lymnaea producta (Mighels, 1845)
- Lymnaea rubella Lea, 1841
- Lymnaea stagnalis (Linnaeus, 1758)
- Lyogyrus bakerianus (Pilsbry, 1917)
- Lyogyrus browni (Carpenter, 1872)
- Lyogyrus granum (Say, 1822)
- Lyogyrus latus F. G. Thompson and Hershler, 1991
- Lyogyrus pilsbryi (Walker, 1906)
- Lyogyrus pupoideus (Gould, 1841)
- Lyogyrus retromargo (F. G. Thompson, 1968)
- Lyogyrus walkeri (Pilsbry, 1898)
- Lyonsia arenosa (Moller, 1842)
- Lyonsia argentea Jeffreys, 1881
- Lyonsia bracteata (Gould, 1850)
- Lyonsia bulla Dall, 1881
- Lyonsia californica Conrad, 1837
- Lyonsia floridana Conrad, 1849
- Lyonsia formosa Jeffreys, 1881
- Lyonsia gouldii Dall, 1915
- Lyonsia granulifera A. E. Verrill and Bush, 1898
- Lyonsia hyalina Conrad, 1831
- Lyonsia lucasana Bartsch and Rehder, 1939
- Lyonsia magnifica Dall, 1913
- Lyonsia norvegica (Gmelin, 1791)
- Lyonsia norwegica (Gmelin, 1791)
- Lyonsia pugetensis Dall, 1913
- Lyonsia striata (Montagu, 1815)
- Lyonsiella abyssicola (G. Sars, 1872)
- Lyonsiella alaskana Dall, 1895
- Lyonsiella cordata Verrill and Bush, 1898
- Lyonsiella fragilis
- Lyonsiella gemma Verrill, 1880
- Lyonsiella quaylei Bernard, 1969
- Lyonsiella subquadrata (Jeffreys, 1881)
- Lyonsiella uschakovi Gorbunov, 1946
- Lyrodus bipartitus (Jeffreys, 1860)
- Lyrodus floridanus (Bartsch, 1922)
- Lyrodus pedicellatus (de Quatrefages, 1849)
- Lyrodus takanoshimensis (Roch, 1929)
- Lyropecten kallinubilosus (Bayer, 1943)
- Macoma acolasta Dall, 1921
- Macoma balthica (Linnaeus, 1758)
- Macoma baltica (Linnaeus, 1758)
- Macoma brevifrons (Say, 1834)
- Macoma brota Dall, 1916
- Macoma calcarea (Gmelin, 1791)
- Macoma carlottensis Whiteaves, 1880
- Macoma cerina C. B. Adams, 1845
- Macoma constricta (Bruguiere, 1792)
- Macoma crassula (Deshayes, 1855)
- Macoma dexioptera Baxter, 1977
- Macoma elimata Dunnill and Coan, 1968
- Macoma expansa Carpenter, 1864
- Macoma extenuata Dall, 1900
- Macoma inconspicua
- Macoma indentata Carpenter, 1864
- Macoma inflata
- Macoma inquinata (Deshayes, 1855)
- Macoma irus
- Macoma lama Bartsch, 1929
- Macoma leptonoidea Dall, 1895
- Macoma limula Dall, 1895
- Macoma lipara Dall, 1916
- Macoma loveni (A. S. Jensen, 1905)
- Macoma middendorffi Dall, 1884
- Macoma mitchelli Dall, 1895
- Macoma moesta (Deshayes, 1855)
- Macoma nasuta (Conrad, 1837)
- Macoma obliqua (J. Sowerby, 1817)
- Macoma phenax Dall, 1900
- Macoma pseudomera Dall and Simpson, 1901
- Macoma pulleyi Boyer, 1969
- Macoma secta (Conrad, 1837)
- Macoma subrosea
- Macoma tageliformis Dall, 1900
- Macoma tenta (Say, 1834)
- Macoma torelli (A. S. Jensen, 1905)
- Macoma yoldiformis Carpenter, 1864
- Macrarene cookeana (Dall, 1918)
- Macrarene farallonensis (A. G. Smith, 1952)
- Macrocallista maculata (Linnaeus, 1758)
- Macrocallista nimbosa (Lightfoot, 1786)
- Macrocypraea cervus (Linnaeus, 1771)
- Macrocypraea zebra (Linnaeus, 1758)
- Macromphalina adamsii (P. Fischer, 1857)
- Macromphalina californica Dall, 1903
- Macromphalina floridana Moore, 1965
- Macromphalina palmalitoris Pilsbry and McGinty, 1950
- Macromphalina pierrot Gardner, 1948
- Macron lividus (A. Adams, 1855)
- Macron mcleani Vermeij, 1998
- Mactra corallina
- Mactra glauca Born, 1778
- Mactra stultorum (Linnaeus, 1758)
- Mactrellona alata (Sprengler, 1802)
- Mactromeris catilliformis (Conrad, 1867)
- Mactromeris hemphillii (Dall, 1894)
- Mactromeris polynyma (Stimpson, 1860)
- Mactrotoma californica (Conrad, 1837)
- Mactrotoma fragilis (Gmelin, 1791)
- Mactrotoma nasuta (Gould, 1851)
- Madrella aurantica Vayssiere, 1903
- Magadis eumerintha Melville and Standen, 1899
- Magnipelta mycophaga Pilsbry, 1953
- Malanochlamys diomedia (Bergh, 1894)
- Malletia abyssopolaris A. H. Clarke, 1960
- Malletia abyssorum Verrill and Bush, 1898
- Malletia cuneata (Jeffreys, 1876)
- Malletia dilatata (Philippi, 1844)
- Malletia faba Dall, 1897
- Malletia johnsoni Clark, 1961
- Malletia obtusa (G. O. Sars, 1878)
- Malletia pacifica Dall, 1897
- Malletia polita Verrill and Bush, 1898
- Malletia truncata
- Malleus candeanus (d'Orbigny, 1842)
- Malluvium benthophilum (Dall, 1889)
- Mancikellia pumila (S. V. Wood, 1850)
- Mangelia acloneta (Dall, 1889)
- Mangelia acrocarinata Dall, 1927
- Mangelia aculea (Dall, 1919)
- Mangelia alcippe (Dall, 1918)
- Mangelia aleutica Dall, 1871
- Mangelia althorpi Dall, 1919
- Mangelia amatula (Dall, 1919)
- Mangelia areia Dall, 1927
- Mangelia astricta Reeve, 1846
- Mangelia atonia (Dall, 1881)
- Mangelia attenuata
- Mangelia bandella (Dall, 1881)
- Mangelia bartletti (Dall, 1889)
- Mangelia biconica C. B. Adams, 1850
- Mangelia brachystoma (Philippi, 1844)
- Mangelia branneri Arnold, 1903
- Mangelia carlottae Dall, 1919
- Mangelia cerina
- Mangelia ceroplasta Bush, 1885
- Mangelia cesta Dall, 1919
- Mangelia cetolaca Dall, 1908
- Mangelia chasmata Dall, 1927
- Mangelia christina Dall, 1927
- Mangelia coarctata (Forbes, 1840)
- Mangelia constricta (Gabb, 1865)
- Mangelia cratera Dall, 1927
- Mangelia crossata Dall, 1927
- Mangelia cryera Dall, 1927
- Mangelia crystallina (Gabb, 1865)
- Mangelia dalli (Verrill, 1882)
- Mangelia densilineata (Dall, 1921)
- Mangelia elusiva (Dall, 1881)
- Mangelia eriopis Dall, 1919
- Mangelia eriphyle Dall, 1919
- Mangelia evadne Dall, 1919
- Mangelia exsculpta (Watson, 1881)
- Mangelia granitica Dall, 1919
- Mangelia hexagona Gabb, 1865
- Mangelia hooveri Arnold, 1903
- Mangelia ipara (Dall, 1881)
- Mangelia ischna Dall, 1927
- Mangelia janira (Dall, 1919)
- Mangelia lastica Dall, 1927
- Mangelia leuca Bush, 1893
- Mangelia loraeformis Dall, 1927
- Mangelia louisa (Dall, 1919)
- Mangelia macra
- Mangelia melantica
- Mangelia merita Hinds, 1843
- Mangelia monocingulata Dall, 1889
- Mangelia munivakensis Dall, 1919
- Mangelia nebula
- Mangelia nuperrima (Tiberi, 1855)
- Mangelia oldroydi Arnold, 1903
- Mangelia painei Arnold, 1903
- Mangelia pelagica (Dall, 1881)
- Mangelia perattenuata Dall, 1905
- Mangelia percompacta Dall, 1927
- Mangelia philodice Dall, 1919
- Mangelia plicosa
- Mangelia pomara (Dall, 1919)
- Mangelia pourtalesii (Dall, 1881)
- Mangelia powisiana (Dautzenberg, 1887)
- Mangelia quadrata (Reeve, 1845)
- Mangelia quadriseriata (Dall, 1919)
- Mangelia rhabdea Dall, 1927
- Mangelia rugirima Dall, 1889
- Mangelia rugulosa (Philippi, 1844)
- Mangelia sagena Dall, 1927
- Mangelia scipio Dall, 1889
- Mangelia sculpturata Dall, 1886
- Mangelia sericifila Dall, 1927
- Mangelia smithii (Forbes, 1840)
- Mangelia stellata (Morch, 1860)
- Mangelia striosa (C. B. Adams, 1852)
- Mangelia strongyla Dall, 1927
- Mangelia subcircularis Dall, 1927
- Mangelia subsida (Dall, 1881)
- Mangelia tachnodes Dall, 1927
- Mangelia toreumata Dall, 1889
- Mangelia variegata
- Mangelia verdensis (Dall, 1919)
- Mangelia victoriana (Dall, 1897)
- Manzonia aequisculpta (Keep, 1887)
- Manzonia almo (Bartsch, 1911)
- Manzonia cosmia (Bartsch, 1911)
- Manzonia purpurea (Dall, 1871)
- Margarites acuticostatus Carpenter, 1864
- Margarites albolineatus (E. A. Smith, 1899)
- Margarites althorpensis Dall, 1919
- Margarites argentatus (Gould, 1841)
- Margarites avensooki
- Margarites baxteri
- Margarites beringensis (E. A. Smith, 1899)
- Margarites bicostatus J. H. McLean, 1964
- Margarites costalis (Gould, 1841)
- Margarites ecarinatus (Dall, 1919)
- Margarites euspirus Dall, 1881
- Margarites frigidus Dall, 1919
- Margarites fulgidus (Jeffreys, 1883)
- Margarites giganteus (Leche, 1878)
- Margarites groenlandicus (Gmelin, 1791)
- Margarites healyi Dall, 1919
- Margarites helicinus (Phipps, 1774)
- Margarites hickmanae J. H. McLean, 1984
- Margarites keepi A. G. Smith and M. Gordon, 1948
- Margarites minutissimus Mighels, 1843
- Margarites mionus Dall, 1927
- Margarites multilineatus (DeKay, 1843)
- Margarites ochotensis (Philippi, 1846)
- Margarites olivaceus (T. Brown, 1827)
- Margarites optabilis Carpenter, 1864
- Margarites pribiloffensis (Dall, 1919)
- Margarites pupillus (Gould, 1849)
- Margarites rhodia Dall, 1921
- Margarites rudis Dall, 1919
- Margarites salmoneus (Carpenter, 1864)
- Margarites scintillans Watson, 1879
- Margarites simbla Dall, 1913
- Margarites smithi Bartsch, 1927
- Margarites sordidus (Hancock, 1846)
- Margarites striatus (Leach, 1819)
- Margarites succinctus Carpenter, 1864
- Margarites umbilicalis Broderip and Sowerby, 1829
- Margarites vahlii (Moller, 1842)
- Margarites vorticifer (Dall, 1873)
- Margaritifera dahurica (Middendorff, 1850)
- Margaritifera falcata (Gould, 1850)
- Margaritifera hembeli (Conrad, 1838)
- Margaritifera laevis (Haas, 1910)
- Margaritifera margaritifera (Linnaeus, 1758)
- Margaritifera marrianae R. I. Johnson, 1983
- Margaritifera middendorffi (Rosén, 1926)
- Marginella denticulata Conrad, 1834
- Marginella fusina Dall, 1881
- Marginella labiata Kiener, 1841
- Marginella perexilis Bavay, 1922
- Marginella virginiana Conrad, 1868
- Maricopella allynsmithi (Gregg and W. B. Miller, 1969)
- Marionia cucullata
- Marionia tedi Ev. Marcus, 1983
- Marisa cornuarietis (Linnaeus, 1758)
- Marsenina ampla A. E. Verrill, 1880
- Marsenina glabra (Couthouy, 1838)
- Marsenina globosa L. M. Perry, 1939
- Marsenina prodita Loven, 1846
- Marsenina rhombica (Dall, 1871)
- Marsenina stearnsii (Dall, 1871)
- Marseniopsis sharonae (Willett, 1939)
- Marshallora nigrocincta (C. B. Adams, 1839)
- Marstonia agarhecta F. G. Thompson, 1969
- Marstonia angulobasis F. G. Thompson, 2005
- Marstonia arga F. G. Thompson, 1977
- Marstonia castor F. G. Thompson, 1977
- Marstonia comalensis (Pilsbry and Ferriss, 1906)
- Marstonia gaddisorum F. G. Thompson, 2005
- Marstonia halcyon F. G. Thompson, 1977
- Marstonia hershleri (F. G. Thompson, 1995)
- Marstonia letsoni (Walker, 1901)
- Marstonia lustrica (Pilsbry, 1890)
- Marstonia ogmorhaphe F. G. Thompson, 1977
- Marstonia olivacea (Pilsbry, 1895)
- Marstonia ozarkensis (Hinkley, 1915)
- Marstonia pachyta F. G. Thompson, 1977
- Marstonia scalariformis (Wolf, 1870)
- Martensnaias rubicunda (Martens, 1900)
- Martesia cuneiformis (Say, 1822)
- Martesia fragilis A. E. Verrill and Bush, 1890
- Martesia striata (Linnaeus, 1758)
- Martialia hyadesii Rochebrune and Mabille, 1889
- Massya longicirrata (Massy, 1917)
- Mastigoteuthis agassizii Verrill, 1881
- Mastigoteuthis atlantica Joubin, 1933
- Mastigoteuthis dentata Hoyle, 1904
- Mastigoteuthis flammea Chun, 1908
- Mastigoteuthis glaukopsis Chun, 1908
- Mastigoteuthis grimaldii (Joubin, 1895)
- Mastigoteuthis inermis Rancurel, 1972
- Mastigoteuthis iselini MacDonald and Clench, 1934
- Mastigoteuthis magna Joubin, 1913
- Mastigoteuthis psychrophila Nesis, 1977
- Mastigoteuthis pyrodes Young, 1972
- Mastigoteuthis schmidti Degner, 1925
- Mastigoteuthis talismani (Fischer and Joubin, 1907)
- Mathilda amaea Dall, 1927
- Mathilda barbadensis Dall, 1889
- Mathilda georgiana Dall, 1927
- Mathilda globulifera Dall, 1927
- Mathilda granifera Dall, 1927
- Mathilda hendersoni Dall, 1927
- Mathilda jacteosa
- Mathilda jeffreysii Dall, 1889
- Mathilda quadricarinata (Brocchi, 1814)
- Mathilda rushii Dall, 1889
- Mathilda scitula Dall, 1889
- Mathilda yucatecana (Dall, 1881)
- Maxwellia gemma (G. B. Sowerby II, 1879)
- Maxwellia santarosana (Dall, 1905)
- Mazatlania cosentini (Philippi, 1836)
- Medionidus acutissimus (Lea, 1831)
- Medionidus conradicus (Lea, 1834)
- Medionidus parvulus (Lea, 1860)
- Medionidus penicillatus (Lea, 1857)
- Medionidus simpsonianus Walker, 1905
- Medionidus walkeri (S. H. Wright, 1897)
- Megacrenella columbiana (Dall, 1897)
- Megacrenella grisea (Dall, 1907)
- Megaleledone senoi Taki, 1961
- Megalocranchia abyssicola (Goodrich, 1896)
- Megalocranchia maxima Pfeffer, 1884
- Megalocranchia oceanica (Voss, 1960)
- Megalomphalus adamsii (P. Fischer, 1857)
- Megalomphalus californicus (Dall, 1903)
- Megalomphalus floridanus (Moore, 1965)
- Megalomphalus palmalitoris (Pilsbry and McGinty, 1950)
- Megalomphalus pierrot (Gardner, 1948)
- Megalomphalus schmiederi J. H. McLean, 1996
- Megalonaias nervosa (Rafinesque, 1820)
- Megalonaias nickliniana (Lea, 1834)
- Megapallifera mutabilis (Hubricht, 1951)
- Megapallifera ragsdalei (Webb, 1950)
- Megapallifera wetherbyi (W. G. Binney, 1874)
- Megastraea turbanica (Dall, 1910)
- Megastraea undosa (W. Wood, 1828)
- Megasurcula carpenteriana (Gabb, 1865)
- Megasurcula remondii (Gabb, 1866)
- Megasurcula stearnsiana (Raymond, 1904)
- Megatebennus bimaculatus (Dall, 1871)
- Megathura crenulata (G. B. Sowerby I, 1825)
- Megayoldia martyria (Dall, 1897)
- Megayoldia montereyensis (Dall, 1893)
- Megayoldia thraciaeformis (Storer, 1838)
- Megomphix californicus A. G. Smith, 1960
- Megomphix hemphilli (W. G. Binney, 1879)
- Megomphix lutarius H. B. Baker, 1932
- Meiocardia agassizii Dall, 1889
- Meiomenia arenicola Salvini-Plawen, 1985
- Meiomenia dalyelli (Koren and Danielssen, 1877)
- Meiomenia swedmarki M. P. Morse, 1979
- Melampus bidentatus Say, 1822
- Melampus bullaoides (Montagu, 1808)
- Melampus coffeus (Linnaeus, 1758)
- Melampus floridanus Pfeiffer, 1856
- Melampus monile (Bruguiere, 1789)
- Melampus morrisoni Martins, 1996
- Melampus olivaceus Carpenter, 1856
- Melanella arcuata (C. B. Adams, 1850)
- Melanella bakeri Bartsch, 1917
- Melanella berryi Bartsch, 1917
- Melanella bilineata Alder, 1848
- Melanella californica Bartsch, 1917
- Melanella catalinensis Bartsch, 1917
- Melanella columbiana Bartsch, 1917
- Melanella comoxensis Bartsch, 1917
- Melanella compacta (Carpenter, 1866)
- Melanella conoidea (Kurtz and Stimpson, 1851)
- Melanella delmontensis (A. G. Smith and M. Gordon, 1948)
- Melanella distorta (Vanatta, 1899)
- Melanella elongata Bucquoy, Dollfus and Dautzenberg, 1883
- Melanella eulimoides (C. B. Adams, 1850)
- Melanella giba de Folin, 1867
- Melanella gracilis (C. B. Adams, 1850)
- Melanella grippi Bartsch, 1917
- Melanella intermedia (Cantraine, 1835)
- Melanella jamaicensis (C. B. Adams, 1845)
- Melanella lastra Bartsch, 1917
- Melanella macra Bartsch, 1917
- Melanella micans (Carpenter, 1865)
- Melanella micrans (Carpenter, 1864)
- Melanella montereyensis Bartsch, 1917
- Melanella oldroydae Bartsch, 1917
- Melanella orphanensis Clarke, 1974
- Melanella peninsularis Bartsch, 1917
- Melanella randolfi Vanatta, 1899
- Melanella rutila (Carpenter, 1864)
- Melanella sarsi (Bush, 1909)
- Melanella tacomaensis Bartsch, 1917
- Melanella thersites (Carpenter, 1864)
- Melanella titubans (S. S. Berry, 1956)
- Melaniella gracillima (L. Pfeiffer, 1839)
- Melanochlamys diomedea (Bergh, 1894)
- Melanoides admirabilis
- Melanoides tuberculatus (Muller, 1774)
- Melanoides turriculus (I. Lea, 1850)
- Melibe leonina (Gould, 1852)
- Melongena bicolor (Say, 1826)
- Melongena corona (Gmelin, 1791)
- Melongena sprucecreekensis Tucker, 1994
- Mendicula ferruginosa (Forbes, 1844)
- Menestho albula (Fabricius, 1780)
- Menetus opercularis (Gould, 1847)
- Mercenaria campechiensis (Gmelin, 1791)
- Mercenaria mercenaria (Linnaeus, 1758)
- Merelina granulosa
- Merelina hewa
- Merelina kenneyi
- Merelina wanawana
- Meromenia hirondella Leloup, 1949
- Mesodesma arctatum (Conrad, 1830)
- Mesodesma deauratum (Turton, 1822)
- Mesodon altivagus (Pilsbry, 1900)
- Mesodon andrewsae W. G. Binney, 1879
- Mesodon clausus (Say, 1821)
- Mesodon elevatus (Say, 1821)
- Mesodon mitchellianus (I. Lea, 1839)
- Mesodon normalis (Pilsbry, 1900)
- Mesodon sanus (Clench and Archer, 1933)
- Mesodon thyroidus (Say, 1816)
- Mesodon trossulus Hubricht, 1966
- Mesodon zaletus (A. Binney, 1837)
- Mesomphix andrewsae (Pilsbry, 1895)
- Mesomphix anurus Hubricht, 1962
- Mesomphix capnodes (W. G. Binney, 1857)
- Mesomphix cupreus (Rafinesque, 1831)
- Mesomphix friabilis (W. G. Binney, 1857)
- Mesomphix globosus (MacMillan, 1940)
- Mesomphix inornatus (Say, 1821)
- Mesomphix latior (Pilsbry, 1900)
- Mesomphix perfragilis (Wetherby, 1894)
- Mesomphix perlaevis (Pilsbry, 1900)
- Mesomphix pilsbryi (G. H. Clapp, 1904)
- Mesomphix rugeli (W. G. Binney, 1879)
- Mesomphix subplanus (A. Binney, 1842)
- Mesomphix vulgatus H. B. Baker, 1933
- Mesonychoteuthis hamiltoni Robson, 1925
- Metasepia pfefferi (Hoyle, 1885)
- Metasepia tullbergi (Appellöf, 1886)
- Metastoma goldfussi (Menke, 1847)
- Metastoma hamiltoni Dall, 1897
- Metastoma mesolia Pilsbry, 1912
- Metastoma pasonis Dall, 1895
- Metastoma riograndense Pilsbry, 1946
- Metastoma roemeri (Pfeiffer, 1848)
- Metaxia convexa (Carpenter, 1856)
- Metaxia metaxae (Delle Chiaje, 1829)
- Metaxia rugulosa (C. B. Adams, 1850)
- Metaxia taeniolata (Dall, 1889)
- Metula significans (Rehder, 1943)
- Metzgeria californica Dall, 1903
- Metzgeria montereyana A. G. Smith and M. Gordon, 1948
- Mexichromis porterae (Cockerell, 1901)
- Micranellum oregonense
- Micrarionta beatula Cockerell, 1929
- Micrarionta facta (Newcomb, 1864)
- Micrarionta feralis (Hemphill, 1901)
- Micrarionta gabbii (Newcomb, 1864)
- Micrarionta opuntia Roth, 1975
- Micrarionta rufocincta (Newcomb, 1864)
- Microceramus floridanus (Pilsbry, 1898)
- Microceramus pontificus (Gould, 1848)
- Microceramus texanus (Pilsbry, 1898)
- Microcondylaea bonellii (Férussac, 1827)
- Microdontia anodontaeformis (Tapparone Canefri, 1883)
- Microdrillia comatotropsis (Dale, 1881)
- Microeulima hemphillii (Dall, 1884)
- Microgaza rotella Dall, 1881
- Microgloma turnerae Saunders and Allen, 1973
- Microgloma yongei Saunders and Allen, 1973
- Microglyphis brevicula (Dall, 1902)
- Microglyphis estuarina (Dall, 1908)
- Microhedyle glandulifera (Kowalevsky, 1901)
- Microhedyle milaschewitschii (Kowalevsky, 1901)
- Micromelo undatus (Bruguiere, 1792)
- Micromenetus brogniartianus (Lea, 1842)
- Micromenetus dilatatus (Gould, 1841)
- Micromenetus floridensis (F. C. Baker, 1945)
- Micromenetus sampsoni (Ancey, 1885)
- Micromenia fodiens (Schwabl, 1955)
- Micronaias arata (Lea, 1845)
- Micronaias fallaciosa (Simpson, 1914)
- Micronaias granadensis (Lea, 1868)
- Microphysula cookei (Pilsbry, 1922)
- Microphysula ingersolli (Bland, 1875)
- Microstelma vestale (Rehder, 1943)
- Microtralia occidentalis (Pfeiffer, 1854)
- Microvoluta blakeana (Dall, 1889)
- Microvoluta intermedia (Dall, 1889)
- Middendorffinaia mongolica (Middendorff, 1851)
- Miesea evelinae (Er. Marcus, 1957)
- Milax gagates (Draparnaud, 1801)
- Milda scitula A. Adams, 1886
- Millerelix deltoidea (Simpson, 1889)
- Millerelix dorfeuilliana (I. Lea, 1838)
- Millerelix fatigiata (Say, 1829)
- Millerelix gracilis (Hubricht, 1961)
- Millerelix jacksoni (Bland, 1866)
- Millerelix lithica (Hubricht, 1961)
- Millerelix mooreana (W. G. Binney, 1858)
- Millerelix peregrina (Rehder, 1932)
- Millerelix plicata (Say, 1821)
- Millerelix simpsoni (Pilsbry and Ferriss, 1907)
- Millerelix troostiana (I. Lea, 1839)
- Milneria kelseyi Dall, 1916
- Milneria minima (Dall, 1871)
- Miodontiscus prolongatus (Carpenter, 1864)
- Mirachelus clinocnemus Quinn, 1979
- Mirachelus corbis (Dall, 1889)
- Miraclathurella herminea (Bartsch, 1934)
- Miralda havanensis (Pilsbry and Aguayo, 1933)
- Miralda paulbartschi
- Miralda scopulorum
- Mitra barbadensis (Gmelin, 1791)
- Mitra belcheri Hinds, 1844
- Mitra brasiliensis Oliveira, 1869
- Mitra catalinae Dall, 1919
- Mitra crenata Broderip, 1836
- Mitra dolorosa Dall, 1903)
- Mitra flammulata
- Mitra florida Gould, 1856
- Mitra fultoni E. A. Smith, 1892
- Mitra grammatula Dall, 1927
- Mitra idae Melvill, 1893
- Mitra larranagai Carcelles, 1947
- Mitra nodulosa (Gmelin, 1791)
- Mitra pallida Nowell-Usticke, 1959
- Mitra saldanha Matthews Anbd Rios, 1970
- Mitra saltata
- Mitra semiferruginea Reeve, 1845
- Mitra straminea A. Adams, 1853
- Mitra swainsonii Broderip, 1836
- Mitra tristis Broderip, 1836
- Mitra zilpha Dall, 1927
- Mitrella amiantis (Dall, 1919)
- Mitrella amphisella (Dall, 1881)
- Mitrella appressa (Dall, 1927)
- Mitrella argus D'Orbigny, 1842
- Mitrella aurantiaca (Dall, 1871)
- Mitrella baccata (Gaskoin, 1852)
- Mitrella bella
- Mitrella callimorpha (Dall, 1919)
- Mitrella carinata (Hinds, 1844)
- Mitrella casciana (Dall, 1919)
- Mitrella caulerpae Keen, 1971
- Mitrella clementensis (Bartsch, 1927)
- Mitrella crumena (Dall, 1924)
- Mitrella densilineata (Carpenter, 1864)
- Mitrella diaphana (A. E. Verrill, 1882)
- Mitrella dichroa (G. B. Sowerby I, 1844)
- Mitrella dicomata (Dall, 1889)
- Mitrella dissimilis Stimpson, 1851
- Mitrella dorma Baker, Hanna, and Strong, 1938
- Mitrella embusa (Dall, 1927)
- Mitrella enida (Dall, 1927)
- Mitrella euribia (Dall, 1927)
- Mitrella fusiformis D'Orbigny, 1842
- Mitrella gausapata Gould, 1850
- Mitrella georgiana (Dall, 1924)
- Mitrella gouldi
- Mitrella granti Lowe, 1935
- Mitrella guttata Sowerby, 1832
- Mitrella hypodra (Dall, 1916)
- Mitrella idalina (Duclor, 1840)
- Mitrella lunata (Say, 1826)
- Mitrella lutulenta (Dall, 1919)
- Mitrella margarita
- Mitrella multilineata (Dall, 1889)
- Mitrella nitens
- Mitrella nycteis (Duclos, 1846)
- Mitrella ocellata (Gmelin, 1791)
- Mitrella perlucida Dall, 1927
- Mitrella permodesta (Dall, 1890)
- Mitrella profundi (Dall, 1889)
- Mitrella projecta (Dall, 1927)
- Mitrella pura (A. E. Verrill, 1882)
- Mitrella raveneli (Dall, 1889)
- Mitrella rorida
- Mitrella sagenata (Dall, 1924)
- Mitrella stemma (Dall, 1927)
- Mitrella tuberosa (Carpenter, 1864)
- Mitrella verrillii (Dall, 1881)
- Mitrella vidua (Dall, 1924)
- Mitrolumna biplicata (Dall, 1889)
- Mitromorpha carpenteri Gilbert, 1954
- Mitromorpha gracilior Tryon, 1884
- Modellnaia siamensis Brandt, 1974
- Modiolula phaseolina (Philippi, 1844)
- Modiolus adriaticus (Lamarck, 1819)
- Modiolus americanus (Leach, 1815)
- Modiolus barbatus
- Modiolus capax (Conrad, 1837)
- Modiolus carpenteri Soot-Ryen, 1963
- Modiolus demissus
- Modiolus eiseni Strong and Hertlein, 1937
- Modiolus modiolus (Linnaeus, 1758)
- Modiolus neglectus Soot-Ryen, 1955
- Modiolus phaseolinus
- Modiolus rectus (Conrad, 1837)
- Modiolus sacculifer (S. S. Berry, 1953)
- Modulus calusa Petuch, 1988
- Modulus carchedonius (Lamarck, 1822)
- Modulus catenulatus (Philippi, 1849)
- Modulus cerodes (A. Adams, 1851)
- Modulus disculus Philippi, 1846
- Modulus floridanus Conrad, 1869
- Modulus kaicherae Petuch, 1987
- Modulus lindae Petuch, 1987
- Modulus modulus (Linnaeus, 1758)
- Modulus pacei Petuch, 1987
- Moelleria costulata (Moller, 1842)
- Moelleria drusiana Dall, 1919
- Moelleria quadrae Dall, 1897
- Moelleriopsis abyssicola Bush, 1897
- Moelleriopsis sincera (Dall, 1890)
- Mohavelix micrometalleus (S. S. Berry, 1930)
- Mohnia corbis (Dall, 1913)
- Mohnia danielsseni (Friele, 1879)
- Mohnia exquisita (Dall, 1913)
- Mohnia freilei (Dall, 1891)
- Mohnia hispidulus (Verrill, 1884)
- Mohnia mohni Friele, 1879
- Mohnia parva (A. E. Verrill and S. Smith, 1882)
- Mohnia simplex (A. E. Verrill, 1884)
- Mohnia siphonoidea (Dall, 1913)
- Monacha cantiana (Montagu, 1803)
- Monadenia callipeplus S. S. Berry, 1940
- Monadenia chaceana S. S. Berry, 1940
- Monadenia churchi Hanna and A. G. Smith, 1933
- Monadenia circumcarinata (Stearns, 1879)
- Monadenia cristulata S. S. Berry, 1940
- Monadenia fidelis (J. E. Gray, 1834)
- Monadenia hillebrandi (Newcomb, 1864)
- Monadenia infumata (Gould, 1855)
- Monadenia marmarotis S. S. Berry, 1940
- Monadenia mormonum (Pfeiffer, 1857)
- Monadenia rotifer S. S. Berry, 1940
- Monadenia scottiana S. S. Berry, 1940
- Monadenia setosa Talmadge, 1952
- Monadenia troglodytes Hanna and A. G. Smith, 1933
- Monadenia tuolumneana S. S. Berry, 1955
- Monadenia yosemitensis (Lowe, 1916)
- Moncetia anceyi Bourguignat, 1886
- Monia patelliformis
- Monia squama
- Monocondylaea corrientesensis (d'Orbigny, 1835)
- Monocondylaea costulata (Moricand, 1858)
- Monocondylaea franciscana (Moricand, 1837)
- Monocondylaea guarayana (d'Orbigny, 1835)
- Monocondylaea jaspidea (Hupé, 1857)
- Monocondylaea minuana (d'Orbigny, 1835)
- Monocondylaea paraguayana (d'Orbigny, 1835)
- Monocondylaea parchappii (d'Orbigny, 1835)
- Monodonta lineata
- Monostiolum tesselatum (Reeve, 1844)
- Montacuta dawsoni Jeffreys, 1864
- Montacuta donacina (S. V. Wood, 1802)
- Montacuta elevata
- Montacuta ferruginosa
- Montacuta limpida Dall, 1899
- Montacuta minuscula Dall, 1899
- Montacuta percompressa Dall, 1899
- Montacuta planata
- Montacuta substriata (Montagu, 1808)
- Montacuta voringi Friele, 1877
- Mopalia acuta (Carpenter, 1855)
- Mopalia ciliata (G. B. Sowerby II, 1840)
- Mopalia cirrata S. S. Berry, 1919
- Mopalia egretta S. S. Berry, 1919
- Mopalia ferreirai R. N. Clark, 1991
- Mopalia hindsii (Reeve, 1847)
- Mopalia imporcata Carpenter, 1864
- Mopalia laevior Pilsbry, 1918
- Mopalia lignosa (Gould, 1846)
- Mopalia lionotus Pilsbry, 1918
- Mopalia lowei Pilsbry, 1918
- Mopalia muscosa (Gould, 1846)
- Mopalia phorminx S. S. Berry, 1919
- Mopalia porifera Pilsbry, 1893
- Mopalia recurvans Barnawell, 1960
- Mopalia sinuata Carpenter, 1864
- Mopalia spectabilis G. I. M. Cowan and I. M. Cowan, 1977
- Mopalia swanii Carpenter, 1864
- Moroteuthis ingens (Smith, 1881)
- Moroteuthis knipovitchi Filippova, 1972
- Moroteuthis lonnbergii Ishikawa and Wakiya, 1914
- Moroteuthis robsoni Adam, 1962
- Moroteuthis robusta (Verrill, 1876)
- Morrisonella pacifica (Dall, 1908)
- Morula didyma (Schwengel, 1943)
- Morum dennisoni (Reeve, 1842)
- Morum lamarcki (Deshayes, 1844)
- Morum oniscus (Linnaeus, 1767)
- Mourgona germaineae Er. Marcus and Ev. Marcus, 1970
- Mucronalia nidorum
- Mulinia cleryana (d'Orbigny, 1846)
- Mulinia lateralis (Say, 1822)
- Murchisonella tampaensis (Bartsch, 1947)
- Murex beauii Fischer and Bernardi, 1857
- Murex cellulosa Conrad, 1846
- Murex ciboney Clench and Farfante, 1945
- Murex formosus Sowerby, 1841
- Murex fulvescens Sowerby, 1834
- Murex glyptus (M. Smith, 1938)
- Murex hidalgoi Crosse, 1869
- Murex leviculus (Dall, 1889)
- Murex recurvirostris Broderip, 1833
- Murexiella glypta (M. Smith, 1938)
- Murexiella hidalgoi (Crosse, 1869)
- Murexiella kalafuti Petuch, 1987
- Murexiella levicula (Dall, 1889)
- Murexiella macgintyi (M. Smith, 1938)
- Murexiella taylorae Petuch, 1987
- Murexsul emipowlusi (Abbott, 1954)
- Muricantharus harasewychi Petuch, 1987
- Muricopsis caribbaea (Bartsch and Rehder, 1939)
- Muricopsis oxytata (M. Smith, 1938)
- Musculista senhousia (Benson, 1842)
- Musculium lacustre (Muller, 1774)
- Musculium partumeium (Say, 1822)
- Musculium securis (Prime, 1852)
- Musculium transversum (Say, 1829)
- Musculus corrugatus (Stimpson, 1851)
- Musculus costulatus
- Musculus cultellus (Deshayer, 1839)
- Musculus discors (Linnaeus, 1767)
- Musculus glacialis (Leche, 1883)
- Musculus impressus (Dall, 1907)
- Musculus japonica
- Musculus lacustre Muller
- Musculus lateralis (Say, 1822)
- Musculus marmoratus (Forbes, 1838)
- Musculus niger (J. E. Gray, 1824)
- Musculus olivaceus Dall, 1916
- Musculus partumetum
- Musculus phenax (Dall, 1915)
- Musculus pygmaeus Glynn, 1964
- Musculus securis Prime
- Musculus seminudus (Dall, 1897)
- Musculus senhousei (Benson, 1842)
- Musculus taylori (Dall, 1897)
- Musculus vernicosus (Middendorff, 1849)
- Mutela alata (Lea, 1864)
- Mutela alluaudi Germain, 1909
- Mutela bourguignati Bourguignat, 1885
- Mutela dubia (Gmelin, 1791)
- Mutela franci Daget, 1964
- Mutela hargeri E.A. Smith, 1908
- Mutela joubini (Germain, 1904)
- Mutela langi Pilsbry & Bequaert, 1927
- Mutela legumen (Rochebrune, 1886)
- Mutela mabilli (Rochebrune, 1886)
- Mutela rostrata (Rang, 1835)
- Mutela soleniformis Bourguignat, 1885
- Mutela wistarmorrisi Graf & Cummings, 2006
- Mutela zambesiensis Mandahl-Barth, 1988
- Mya arenaria Linnaeus, 1758
- Mya baxteri Coan and Scott, 1997
- Mya elegans (Eichwald, 1871)
- Mya japonica Jay, 1856
- Mya priapus (Tilesius, 1822)
- Mya profundior Grant and Gale, 1931
- Mya pseudoarenaria Schlesch, 1931
- Mya truncata Linnaeus, 1758
- Mya uzenensis Nomura and Zimbo, 1937
- Mycetopoda legumen (Martens, 1888)
- Mycetopoda pittieri Marshall, 1927
- Mycetopoda siliquosa (Spix & Wagner, 1827)
- Mycetopoda soleniformis d'Orbigny, 1835
- Mycetopodella falcata (Higgins, 1868)
- Myonera garretti
- Myonera lamellifera (Dall, 1881)
- Myonera limatula (Dall, 1881)
- Myonera paucistriata Dall, 1886
- Myonera ruginosa (Jeffereys, 1881)
- Myonera tillamookensis Dall, 1916
- Myosotella myosotis (Draparnaud, 1801)
- Myotophallus rooseveltianus (S. S. Berry, 1917)
- Myrtea compressa (Dall, 1881)
- Myrtea lens (A. E. Verrill and S. Smith, 1880)
- Myrtea pristiphora Dall and Simpson, 1901
- Myrtea sagrinata (Dall, 1886)
- Myrtea spinifera Montagu, 1803
- Mysella aleutica Dall, 1899
- Mysella beringensis (Dall, 1916)
- Mysella bidentata
- Mysella casta (A. E. Verrill and Bush, 1898)
- Mysella compressa (Dall, 1913)
- Mysella dawsoni (Jeffreys, 1864)
- Mysella golischi (Dall, 1916)
- Mysella grebnitzkii (Dall, 1916)
- Mysella grippi (Dall, 1912)
- Mysella moelleri (Morch, 1875)
- Mysella ovata (Jeffreys, 1881)
- Mysella pedroana Dall, 1899
- Mysella planata (Krause, 1885)
- Mysella planulata (Stimpson, 1851)
- Mysella sovialiki
- Mysella striatula A. E. Verrill and Bush, 1898
- Mysella triquetra (A. E. Verrill and Bush, 1898)
- Mysella tumida (Carpenter, 1864)
- Mysella tumidula (Jeffreys, 1866)
- Mysia undata (Pennant, 1777)
- Mysouffa cumingii (A. Adams, 1855)
- Mytilimeria nuttalli Conrad, 1837
- Mytilopsis domininguensis Recluz, 1852
- Mytilopsis leucophaeata (Conrad, 1831)
- Mytilopsis sallei (Recluz, 1849)
- Mytilus californianus Conrad, 1837
- Mytilus chilensis Hupé, 1854
- Mytilus edulis Linnaeus, 1758
- Mytilus galloprovincialis Lamarck, 1819
- Mytilus trossulus Gould, 1850
- Naesiotus christenseni (W. B. Miller and Reeder, 1984)
- Naesiotus nigromontanus (Dall, 1897)
- Namkongnaia inkhavilayi Jeratthitikul, Sutcharit, Ngor & Prasankok, 2021
- Namkongnaia lemeslei (Morelet, 1875)
- Nannodiella melanitica (Bush, 1885)
- Nannodiella oxia (Bush, 1885)
- Nannodiella vespuciana (d'Orbigny, 1842)
- Nannoteretispira habei
- Nannoteretispira japonica Habe, 1961
- Nannoteretispira kelseyi (Bartsch, 1911)
- Nanobalcis worsfoldi Waren, 1990
- Nassaria spinigera (Hayashi and Habe, 1965)
- Nassarina bushiae (Dall, 1889)
- Nassarina glypta (Bush, 1885)
- Nassarina grayi Dall, 1889
- Nassarina metabrunnea Dall and Simpson, 1901
- Nassarina minor (C. B. Adams, 1845)
- Nassarina monilifera (Sowerby, 1844)
- Nassarina penicillata (Carpenter, 1864)
- Nassarius acutus (Say, 1822)
- Nassarius albus (Say, 1826)
- Nassarius angulicostis (Pilsbry and Lowe, 1932)
- Nassarius antillarum (d'Orbigny, 1842)
- Nassarius arcularius (Linnaeus, 1758)
- Nassarius catallus (Dall, 1908)
- Nassarius cerritensis (Arnold, 1903)
- Nassarius consensus (Ravenel, 1861)
- Nassarius crematus (Hinds, 1844)
- Nassarius cremmatus
- Nassarius delosi (Woodring, 1946)
- Nassarius fossatus (Gould, 1850)
- Nassarius fraterculus (Dunker, 1860)
- Nassarius gallegosi Strong and Hertlein, 1937
- Nassarius guaymasensis (Pilsbry and Lowe, 1932)
- Nassarius hotessieri (d'Orbigny, 1845)
- Nassarius howardae Chace, 1958
- Nassarius incrassatus (Stroem, 1768)
- Nassarius insculptus (Carpenter, 1864)
- Nassarius iodes (Dall, 1917)
- Nassarius limacinus (Dall, 1917)
- Nassarius luteostoma Broderip and Sowerby, 1829
- Nassarius mendicus (Gould, 1850)
- Nassarius miser (Dall, 1908)
- Nassarius moestus (Hinds, 1844)
- Nassarius nanus
- Nassarius nigrolabra (Verrill, 1880)
- Nassarius obsoletus (Say, 1822)
- Nassarius olomea Kay, 1979
- Nassarius onchodes (Dall, 1917)
- Nassarius pagodus (Reeve, 1844)
- Nassarius papillosus (Gould, 1850)
- Nassarius perpinguis (Hinds, 1844)
- Nassarius polygonatus (Lamarck, 1822)
- Nassarius pygmaeus Lamarck, 1822
- Nassarius reticulatus (Linnaeus, 1758)
- Nassarius rhinetes S. S. Berry, 1953
- Nassarius scissuratus (Dall, 1889)
- Nassarius shaskyi Mclean, 1970
- Nassarius splendidulus (Dunker, 1846)
- Nassarius tiarula (Kiener, 1841)
- Nassarius trivittatus (Say, 1822)
- Nassarius versicolor (C. B. Adams, 1852)
- Nassarius vibex (Say, 1822)
- Natica alapapilionis
- Natica bougei
- Natica castrensis Dall, 1889
- Natica floridana (Rehder, 1943)
- Natica gualteriana Récluz, 1844
- Natica hilaris
- Natica livida Pfeiffer, 1840
- Natica marochiensis (Gmelin, 1791)
- Natica perlineata Dall, 1889
- Natica poliana
- Natica pusilla Say, 1822
- Natica sagraiana D'Orbigny, 1842
- Natica tedbayeri Rehder, 1986
- Naticarius canrena (Linnaeus, 1758)
- Naticarius verae Rehder, 1947
- Nausitora fusticula (Jeffreys, 1860)
- Nautilus belauensis Saunders, 1981
- Nautilus macromphalus Sowerby, 1848
- Nautilus pompilius Linnaeus, 1758
- Nautilus repertus Iredale, 1944
- Nautilus stenomphalus Sowerby, 1848
- Navanax aenigmaticus (Bergh, 1893)
- Navanax inermis (J. G. Cooper, 1863)
- Navanax polyalphos (Gosliner and Williams, 1972)
- Neadmete modesta (Carpenter, 1864)
- Neaeromya chacei (Dall, 1916)
- Neaeromya compressa (Dall, 1899)
- Neaeromya floridana (Dall, 1899)
- Neaeromya myaciformis (Dall, 1916)
- Neaeromya rugifera (Carpenter, 1864)
- Neaeromya stearnsi (Dall, 1899)
- Nearctula rowellii (Newcomb, 1860)
- Nectoteuthis pourtalesi Verrill, 1883
- Neilonela acinula (Dall, 1890)
- Neilonela excisa (Philippi, 1841)
- Neilonela pusio (Philippi, 1844)
- Neilonela quadrangularis (Dall, 1881)
- Nematolampas regalis Berry, 1913
- Nematomenia arctica Thiele, 1913
- Nematomenia banyulensis (Pruvot, 1890)
- Nematomenia flavens (Pruvot, 1890)
- Nematomenia incirrata
- Nematomenia ptyalosa
- Nematomenia tegulata
- Nematomenia triglandulata
- Nembrotha divae Marcus, 1958
- Nembrotha eliora Marcus and Marcus, 1967
- Nembrotha gratiosa Bergh, 1890
- Nemocardium centifilosum (Carpenter, 1864)
- Nemocardium peramabile (Dall, 1881)
- Nemocardium tinctum (Dall, 1881)
- Nemocardium transversum Rehder and Abbott, 1951
- Neoberingius frielei (Dall, 1895)
- Neodrillia cydia Bartsch, 1943
- Neohelix albolabris (Say, 1817)
- Neohelix alleni (Sampson, 1883)
- Neohelix dentifera (A. Binney, 1837)
- Neohelix divesta (Gould, 1848)
- Neohelix lioderma (Pilsbry, 1902)
- Neohelix major (A. Binney, 1837)
- Neohelix solemi Emberton, 1988
- Neolepton obliquatum (Chaster, 1897)
- Neolepton sulcatulum (Jeffreys, 1859)
- Neomenia carinata Tullberg, 1875
- Neomenia grandis
- Neomenia herwigi
- Neopilina galatheae
- Neoplanorbis carinatus Walker, 1908
- Neoplanorbis smithi Walker, 1908
- Neoplanorbis tantillus Pilsbry, 1906
- Neoplanorbis umbilicatus Walker, 1908
- Neopleurotomoides callembyron (Dautzenberg and Fischer, 1896)
- Neopycnodonte cochlear (Poli, 1795)
- Neorossia caroli (Joubin, 1902)
- Neorossia leptodons Reid, 1992
- Neosimnia advena (Cate, 1978)
- Neosimnia aequalis (G. B. Sowerby II, 1832)
- Neosimnia avena (G. B. Sowerby II, 1832)
- Neosimnia barbarensis (Dall, 1892)
- Neosimnia bellamaris S. S. Berry, 1946
- Neosimnia bijuri (Cate, 1976)
- Neosimnia loebbeckeana (Weinkauff, 1881)
- Neosimnia spelta Linnaeus, 1758
- Neoteuthis thielei Naef, 1921
- Neotrapezium liratum (Reeve, 1843)
- Nephritica haricotti (Frierson, 1927)
- Nephritica poeyana (Lea, 1857)
- Nephronaias aeruginosa (Morelet, 1849)
- Nephronaias aztecorum (Philippi, 1847)
- Nephronaias calamitarum (Morelet, 1849)
- Nephronaias championi (Martens, 1900)
- Nephronaias copanensis (Martens, 1900)
- Nephronaias dysonii (Lea, 1859)
- Nephronaias goascoranensis (Lea, 1858)
- Nephronaias gundlachi (Dunker, 1858)
- Nephronaias hermanni (Haas, 1929)
- Nephronaias hjalmarsoni (Dunker, 1858)
- Nephronaias lempensis Marshall, 1926
- Nephronaias macnielii (Lea, 1869)
- Nephronaias mellea (Lea, 1859)
- Nephronaias oregonensis (Lea, 1852)
- Nephronaias plicatula (Küster, 1856)
- Nephronaias ravistella (Morelet, 1849)
- Nephronaias rowellii (Lea, 1859)
- Nephronaias rugulosa (Küster, 1856)
- Nephronaias sajensis (Frierson, 1927)
- Nephronaias scamnata (Morelet, 1849)
- Nephronaias sphenorhyncha (Crosse & Fischer, 1893)
- Nephronaias tabascoensis (Küster, 1856)
- Nephronaias tempisquensis Pilsbry, 1920
- Nephronaias yzabalensis (Crosse & Fischer, 1892)
- Nepotilla amoena (G. O. Sars, 1878)
- Neptunea amianta (Dall, 1890)
- Neptunea antiqua (Linnaeus, 1758)
- Neptunea beringiana (Middendorff, 1848)
- Neptunea brevicauda (Deshayes, 1832)
- Neptunea communis (Middendorff, 1848)
- Neptunea despecta (Linnaeus, 1758)
- Neptunea eulimata (Dall, 1907)
- Neptunea heros (J. E. Gray, 1850)
- Neptunea insularis (Dall, 1895)
- Neptunea ithia (Dall, 1891)
- Neptunea lyrata (Gmelin, 1791)
- Neptunea middendorffiana MacGinitie, 1959
- Neptunea oncodes (Dall, 1907)
- Neptunea phoenicea (Dall, 1891)
- Neptunea pribiloffensis (Dall, 1919)
- Neptunea smirnia (Dall, 1919)
- Neptunea tabulata (Baird, 1863)
- Neptunea taphria (Dall, 1891)
- Neptunea varicifera (Dall, 1907)
- Neptunea ventricosa (Gmelin, 1791)
- Neptunea vinosa (Dall, 1919)
- Nerita fulgurans Gmelin, 1791
- Nerita funiculata Menke, 1851
- Nerita peloronta Linnaeus, 1758
- Nerita scabricosta Lamarck, 1822
- Nerita tessellata Gmelin, 1791
- Nerita versicolor Gmelin, 1791
- Neritina cariosa (Wood, 1828)
- Neritina clenchi Russell, 1940
- Neritina granosa Sowerby, 1825
- Neritina luteofasciatus (Miller, 1879)
- Neritina meleagris Lamarck, 1822
- Neritina pulligera (Linnaeus, 1758)
- Neritina reclivata (Say, 1822)
- Neritina usnea (Roding, 1798)
- Neritina vespertina Sowerby, 1849
- Neritina virginea (Linnaeus, 1758)
- Nesovitrea binneyana (E. S. Morse, 1864)
- Nesovitrea dalliana (Pilsbry and Simpson, 1889)
- Nesovitrea electrina (Gould, 1841)
- Nesovitrea suzannae Pratt, 1978
- Nesta atlantica Farfante, 1947
- Nesta candida (H. Adams,, 1879)
- Nesta galapagensis J. Mclean, 1970
- Netastoma japonicum (Yokoyama, 1920)
- Netastoma rostratum (Valenciennes, 1846)
- Nettastomella darwini (Sowerby, 1849)
- Neverita duplicata (Say, 1822)
- Neverita politiana (Dall, 1919)
- Neverita reclusiana (Deshayes, 1839)
- Nierstrassia fragile
- Nipponolimopsis decussata (A. Adams, 1862)
- Nipponotrophon fabricii (Muller, 1842)
- Nipponotrophon lasius (Dall, 1919)
- Nipponotrophon scitulus (Dall, 1891)
- Niso aeglees Bush, 1885
- Niso attilioi (C. M. Hertz and J. Hertz, 1982)
- Niso hendersoni Bartsch, 1953
- Niso hipolitensis Bartsch, 1917
- Niso lomana Bartsch, 1917
- Niso tricolor Dall, 1889
- Nitia acuminata (H. Adams, 1866)
- Nitia chefneuxi (Neuville & Anthony, 1906)
- Nitia monceti (Bourguignat, 1883)
- Nitia mutelaeformis (Germain, 1906)
- Nitia teretiuscula (Philippi, 1847)
- Nitidella carinata Hinds, 1844
- Nitidella gausapata Gould, 1850
- Nitidella gouldi (Carpenter, 1857)
- Nitidella laevigata (Linnaeus, 1758)
- Nitidella moleculina Duclos, 1840
- Nitidella nitida (Lamarck, 1822)
- Nitidella parva Dunker, 1847
- Nitidiscala berryi (Dall, 1907)
- Nitidiscala caamanoi (Dall and Bartsch, 1910)
- Nitidiscala californica (Dall, 1917)
- Nitidiscala catalinae (Dall, 1908)
- Nitidiscala catalinensis (Dall, 1917)
- Nitidiscala hindsii (Carpenter, 1856)
- Nitidiscala indianorum (Carpenter, 1864)
- Nitidiscala sawinae (Dall, 1903)
- Nitidiscala tincta (Carpenter, 1864)
- Niveotectura funiculata (Carpenter, 1864)
- Niveria antillarum (Schilder, 1922)
- Niveria candidula (Gaskoin, 1836)
- Niveria leucosphaera Schilder, 1931
- Niveria nix (Schilder, 1922)
- Niveria pediculus (Linnaeus, 1758)
- Niveria quadripunctata (J. E. Gray, 1827)
- Niveria suffusa (J. E. Gray, 1827)
- Nodilittorina angustior (Morch, 1876)
- Nodilittorina dilatata (d'Orbigny, 1842)
- Nodilittorina meleagris (Potiez and Michaud, 1838)
- Nodilittorina mespillum (Megerle von Muhlfeld, 1824)
- Nodilittorina pyramidalis (Quoy and Gaimard, 1833)
- Nodilittorina riisei (Morch, 1876)
- Nodilittorina tuberculata (Menke, 1828)
- Nodilittorina ziczac (Gmelin, 1791)
- Nodipecten nodosus (Linnaeus, 1758)
- Nodipecten subnodosus (G. B. Sowerby I, 1835)
- Nodiscala spongiosa (Carpenter, 1864)
- Nodotoma impressa (Morch, 1869)
- Nodularia breviconcha Lee, Kim, Bogan & Kondo in Lopes-Lima et al., 2020
- Nodularia diespiter (Mabille, 1887)
- Nodularia dorri (Wattebled, 1886)
- Nodularia douglasiae (Griffith & Pidgeon, 1833)
- Nodularia gladiator (Ancey, 1881)
- Nodularia jourdyi (Morlet, 1886)
- Nodularia micheloti (Morlet, 1886)
- Nodularia nipponensis (Martens, 1877)
- Nodularia nuxpersicae (Dunker, 1848)
- Nodularia persculpta Haas, 1910
- Nodulotrophon dalli (Kobelt, 1878)
- Noetia ponderosa (Say, 1822)
- Norrisia norrisi (G. B. Sowerby II, 1838)
- Notarchus punctatus Philippi, 1836
- Notoacmea dipicta (Hinds, 1842)
- Notoacmea fenestrata (Reeve, 1855)
- Notoacmea insessa (Hinds, 1842)
- Notoacmea paleacea (Gould, 1853)
- Notoacmea persona (Rathke, 1833)
- Notoacmea scutum (Rathke, 1833)
- Notoacmea testudinalis (Muller, 1776)
- Notobranchaea macdonaldi Pelseneer, 1886
- Notobryon wardi
- Notocrater craticulata (Suter, 1908)
- Notogillia sathon F. G. Thompson, 1969
- Notogillia wetherbyi (Dall, 1885)
- Nototeredo knoxi (Bartsch, 1917)
- Nototeredo norvagicus (Spengler, 1792)
- Nototeuthis dimegacotyle Nesis and Nikitina, 1986
- Nototodarus gouldi (McCoy, 1888)
- Nototodarus hawaiiensis (Berry, 1912)
- Nototodarus sloanii (Gray, 1849)
- Noumeaella rubrofasciata Gosliner, 1991
- Novisuccinea chittenangoensis (Pilsbry, 1908)
- Novisuccinea ovalis (Say, 1817)
- Noyo intersessa (Roth, 1987)
- Nucella canaliculata (Duclos, 1832)
- Nucella emarginata (Deshayes, 1839)
- Nucella lamellosa (Gmelin, 1791)
- Nucella lapillus (Linnaeus, 1758)
- Nucella lima (Gmelin, 1791)
- Nucinella adamsi (Dall, 1898)
- Nucula aegeensis Jeffreys, 1879
- Nucula annulata Hampson, 1971
- Nucula atacellana Schenck, 1939
- Nucula calcicola Moore, 1977
- Nucula cancellata Meek and Hayden, 1856
- Nucula cardara Dall, 1916
- Nucula carlottensis Dall, 1897
- Nucula chrysocome
- Nucula crenulata A. Adams, 1856
- Nucula cymella Dall, 1886
- Nucula darella Dall, 1916
- Nucula delphinodonta Mighels and C. B. Adams, 1842
- Nucula exigua G. B. Sowerby I, 1833
- Nucula fernandinae Dall, 1927
- Nucula granulosa Verrill, 1884
- Nucula groenlandica Posselt, 1898
- Nucula hanleyi
- Nucula nitidosa Winckworth, 1930
- Nucula nucleus Linnaeus, 1758
- Nucula proxima Say, 1822
- Nucula subovata Verrill and Bush, 1898
- Nucula sulcata Bronn, 1831
- Nucula tumidula (Malm, 1860)
- Nucula turgida
- Nucula zophos A. H. Clark, 1960
- Nuculana acuta (Conrad, 1832)
- Nuculana amiata (Dall, 1916)
- Nuculana aspecta (Dall, 1927)
- Nuculana bipennis (Dall, 1927)
- Nuculana callimene (Dall, 1908)
- Nuculana carpenteri (Dall, 1881)
- Nuculana caudata (Donovan, 1801)
- Nuculana cellulita (Dall, 1896)
- Nuculana cestrota (Dall, 1889)
- Nuculana concentrica (Say, 1824)
- Nuculana conceptionis (Dall, 1896)
- Nuculana crenulata (A. Adams, 1856)
- Nuculana dalli Krause, 1885
- Nuculana elenensis (G. B. Sowerby I, 1833)
- Nuculana extenuata (Dall, 1897)
- Nuculana gomphoidea (Dall, 1916)
- Nuculana hamata (Carpenter, 1864)
- Nuculana jacksoni (Gould, 1841)
- Nuculana jamaicensis (d'Orbigny, 1842)
- Nuculana leonina (Dall, 1896)
- Nuculana liogona (Dall, 1916)
- Nuculana messanensis (Sequenza, 1877)
- Nuculana minuta (Muller, 1776)
- Nuculana navisa (Dall, 1916)
- Nuculana orixa (Dall, 1927)
- Nuculana ornata
- Nuculana oxia (Dall, 1916)
- Nuculana parva (G. B. Sowerby I, 1833)
- Nuculana penderi (Dall and Bartsch, 1910)
- Nuculana pernula (Müller, 1779)
- Nuculana platessa
- Nuculana radiata (Krause, 1885)
- Nuculana spargana (Dall, 1916)
- Nuculana subaequilatera (Jeffreys, 1879)
- Nuculana tamara Gorbunov, 1946
- Nuculana taphria (Dall, 1896)
- Nuculana tenuisulcata (Couthouy, 1838)
- Nuculana verrilliana (Dall, 1886)
- Nuculoma corbuloides (Moller, 1842)
- Nutricola confusa (S. Gray, 1982)
- Nutricola cymata (Dall, 1913)
- Nutricola lordi (Baird, 1863)
- Nutricola ovalis (Dall, 1902)
- Nutricola tantilla (Gould, 1853)
- Nuttallia nuttallii (Conrad, 1837)
- Nuttallia obscurata (Reeve, 1857)
- Nuttallina californica (Reeve, 1847)
- Nyassunio nyassaensis (Lea, 1864)
- Nyassunio ujijiensis (Crosse, 1881)
- Nyeinchanconcha nyeinchani Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Nystiella atlantis Clench and Turner, 1952
- Nystiella concava (Dall, 1889)
- Nystiella formosissima (Jeffreys, 1884)
- Nystiella pyrrhias (Watson, 1886)
- Obesotoma artica (A. Adams, 1855)
- Obesotoma japonica
- Obesotoma lawrenciana (Dall, 1919)
- Obesotoma miona (Dall, 1919)
- Obesotoma robusta (Packard, 1867)
- Obesotoma schantarica (Middendorff, 1849)
- Obesotoma simplex (Middendorff, 1849)
- Obesotoma tenuilirata (Dall, 1871)
- Obesotoma woodiana (Moller, 1842)
- Obliquaria reflexa Rafinesque, 1820
- Obovalis omiensis (Heimburg, 1884)
- Obovaria arkansasensis (Lea, 1862)
- Obovaria choctawensis (Athearn, 1964)
- Obovaria haddletoni (Athearn, 1964)
- Obovaria olivaria (Rafinesque, 1820)
- Obovaria retusa (Lamarck, 1819)
- Obovaria subrotunda (Rafinesque, 1820)
- Obovaria unicolor (Lea, 1845)
- Oceanida graduata de Folin, 1870
- Oceanida inglei Lyons, 1978
- Ocenebra atropurpurea Carpenter, 1865
- Ocenebra barbarensis (Gabb, 1865)
- Ocenebra beta (Dall, 1919)
- Ocenebra circumtexta Stearns, 1871
- Ocenebra crispatissima S. S. Berry, 1953
- Ocenebra emipowlusi Abbott, 1954
- Ocenebra erinacea (Linnaeus, 1758)
- Ocenebra foveolata (Hinds, 1844)
- Ocenebra gracillima Stearns, 1871
- Ocenebra grippi (Dall, 1911)
- Ocenebra inornata (Recluz, 1851)
- Ocenebra interfossa Carpenter, 1864
- Ocenebra japonica Dunker, 1860
- Ocenebra lurida (Middendorff, 1848)
- Ocenebra minirosea Abbott, 1954
- Ocenebra minor Dall, 1919
- Ocenebra painei (Dall, 1903)
- Ocenebra sclera
- Ocenebra squamulifera (Carpenter and Gabb, 1869)
- Ocenebra tracheia Dall, 1919
- Ocenotrophon painei (Dall, 1903)
- Ocinebrina atropurpurea (Carpenter, 1865)
- Ocinebrina barbarensis (Gabb, 1865)
- Ocinebrina beta (Dall, 1919)
- Ocinebrina circumtexta (Stearns, 1871)
- Ocinebrina emipowlusi (Abbott, 1954)
- Ocinebrina foveolata (Hinds, 1844)
- Ocinebrina gracillima (Stearns, 1871)
- Ocinebrina grippi (Dall, 1911)
- Ocinebrina inornata (Recluz, 1851)
- Ocinebrina interfossa (Carpenter, 1864)
- Ocinebrina lurida (Middendorff, 1848)
- Ocinebrina minor (Dall, 1919)
- Ocinebrina sclera (Dall, 1919)
- Ocinebrina squamulifera (Carpenter, 1869)
- Ocinebrina tracheia (Dall, 1919)
- Octopoteuthis danae (Joubin, 1931)
- Octopoteuthis deletron Young, 1972
- Octopoteuthis indica Naef, 1923
- Octopoteuthis longiptera Akimushkin, 1963
- Octopoteuthis megaptera (Verrill, 1885)
- Octopoteuthis nielseni (Robson, 1948)
- Octopoteuthis rugosa Clarke, 1980
- Octopoteuthis sicula Rüppell, 1844
- Octopus abaculus Norman and Sweeney, 1997
- Octopus aculeatus D'Orbigny, 1834 in Férussac and D'Orbigny, 1834-1848
- Octopus adamsi Benham, 1944
- Octopus aegina Gray, 1849
- Octopus alatus (Sasaki, 1920)
- Octopus alecto Berry, 1953
- Octopus alpheus Norman, 1993
- Octopus araneoides (Taki, 1964)
- Octopus arborescens (Hoyle, 1904)
- Octopus areolatus De Haan, 1839-1841 in Férussac and D'Orbigny, 1834-1848
- Octopus aspilosomatis Norman, 1993
- Octopus australis Hoyle, 1885
- Octopus balboai Voss, 1971
- Octopus berrima Stranks and Norman, 1993
- Octopus bimaculatus Verrill, 1883
- Octopus bimaculoides Pickford and McConnaughey, 1949
- Octopus bocki Adam, 1941
- Octopus briareus Robson, 1929
- Octopus brocki Ortmann, 1888
- Octopus bunurong Stranks, 1990
- Octopus burryi Voss, 1950
- Octopus californicus (Berry, 1911)
- Octopus campbelli (Smith, 1902)
- Octopus carolinensis Verrill, 1884
- Octopus chierchiae Jatta, 1889
- Octopus conispadiceus (Sasaki, 1917)
- Octopus cordiformis Quoy and Gaimard, 1832
- Octopus cyanea Gray, 1849
- Octopus defilippi Verany, 1851
- Octopus dierythraeus Norman, 1993
- Octopus digueti Perrier and Rochebrune, 1894
- Octopus exannulatus Norman, 1993
- Octopus fangsiao D'Orbigny, 1839-1841 in Férussac and D'Orbigny, 1834-1848
- Octopus favonius Gray, 1849
- Octopus filamentosus Blainville, 1826
- Octopus filosus Howell, 1867
- Octopus fitchi Berry, 1953
- Octopus fujitai (Sasaki, 1929)
- Octopus gardineri (Hoyle, 1905)
- Octopus globosus Appellöf, 1886
- Octopus graptus Norman, 1993
- Octopus guangdongenis Dong, 1976
- Octopus hardwickei Gray, 1849
- Octopus hattai (Sasaki, 1929)
- Octopus hongkongensis Hoyle, 1885
- Octopus horridus D'Orbigny, 1826
- Octopus hubbsorum Berry, 1953
- Octopus joubini Robson, 1929
- Octopus kagoshimensis Ortmann, 1888
- Octopus kaurna Stranks, 1990
- Octopus kermadecensis (Berry, 1914)
- Octopus lechenaultii D'Orbigny, 1826 in Férussac and D'Orbigny, 1834-1848
- Octopus lobensis Castellanos and Menni, 1969
- Octopus longispadiceus (Sasaki, 1917)
- Octopus luteus (Sasaki, 1929)
- Octopus macropus Risso, 1826
- Octopus magnificus Villanueva et al., 1992
- Octopus maorum Hutton, 1880
- Octopus marginatus Taki, 1964
- Octopus maya Voss and Solis Ramirez, 1966
- Octopus membranaceus Quoy and Gaimard, 1832
- Octopus mercatoris Adam, 1937
- Octopus microphthalmus Goodrich, 1896
- Octopus micropyrsus Berry, 1953
- Octopus mimus Gould, 1852
- Octopus minor (Sasaki, 1920)
- Octopus mototi Norman, 1993
- Octopus mutilans Taki, 1942
- Octopus nanhaiensis Dong, 1976
- Octopus nanus Adam, 1973
- Octopus niveus Lesson, 1830 in 1830-1831
- Octopus nocturnus Norman and Sweeney, 1997
- Octopus occidentalis Steenstrup in Hoyle, 1886
- Octopus ochotensis (Sasaki, 1920)
- Octopus oculifer (Hoyle, 1904)
- Octopus oliveri (Berry, 1914)
- Octopus ornatus Gould, 1852
- Octopus oshimai (Sasaki, 1929)
- Octopus ovulum (Sasaki, 1917)
- Octopus pallidus Hoyle, 1885
- Octopus parvus (Sasaki, 1917)
- Octopus penicillifer Berry, 1954
- Octopus pentherinus Rochebrune and Mabille, 1889
- Octopus polyzenia Gray, 1849
- Octopus prashadi Adam, 1939
- Octopus pricei (Berry, 1913)
- Octopus pumilus Norman and Sweeney, 1997
- Octopus rapanui Voss, 1979
- Octopus robsoni Adam, 1941
- Octopus roosevelti Stuart, 1941
- Octopus rubescens Berry, 1953
- Octopus salutii Verany, 1839
- Octopus sanctaehelenae Robson, 1929
- Octopus sasakii Taki, 1942
- Octopus selene Voss, 1971
- Octopus spinosus (Sasaki, 1920)
- Octopus striolatus Dong, 1976
- Octopus superciliosus Quoy and Gaimard, 1832
- Octopus taprobanensis Robson, 1926
- Octopus tehuelchus D'Orbigny, 1834 in 1834-1847
- Octopus tenebricus Smith, 1884
- Octopus tetricus Gould, 1852
- Octopus tonganus Hoyle, 1885
- Octopus tsugarensis (Sasaki, 1920)
- Octopus validus (Sasaki, 1920)
- Octopus varunae Oommen, 1971
- Octopus veligero Berry, 1953
- Octopus verrucosus Hoyle, 1885
- Octopus vitiensis Hoyle, 1885
- Octopus vulgaris Cuvier, 1797
- Octopus warringa Stranks, 1990
- Octopus winckworthi Robson, 1926
- Octopus wolfi (Wülker, 1913)
- Octopus yendoi (Sasaki, 1920)
- Octopus zonatus Voss, 1968
- Ocythoe tuberculata Rafinesque, 1814
- Odostomella doliolum (Philippi, 1844)
- Odostomia abbotti Olsson and McGinty, 1958
- Odostomia acrybia Dall and Bartsch, 1909
- Odostomia acutidens Dall, 1884
- Odostomia aepynota Dall and Bartsch, 1909
- Odostomia aequisculpta Carpenter, 1864
- Odostomia aleutica Dall and Bartsch, 1909
- Odostomia altina Dall and Bartsch, 1909
- Odostomia americana Dall and Bartsch, 1904
- Odostomia amiantus Dall and Bartsch, 1907
- Odostomia amilda Dall and Bartsch, 1909
- Odostomia angularis Dall and Bartsch, 1907
- Odostomia arctica Dall and Bartsch, 1909
- Odostomia astricta Dall and Bartsch, 1907
- Odostomia atossa Dall, 1908
- Odostomia attenuata (Dall, 1892)
- Odostomia audoax
- Odostomia avellana Carpenter, 1864
- Odostomia babylonia (C. B. Adams, 1845)
- Odostomia bachia Bartsch, 1927
- Odostomia baldridgeae Bartsch, 1912
- Odostomia barkleyensis Dall and Bartsch, 1910
- Odostomia beauforti Jacot, 1921
- Odostomia beringi Dall, 1871
- Odostomia bruneri Verrill, 1882
- Odostomia calcarella Bartsch, 1912
- Odostomia callimene Bartsch, 1912
- Odostomia callimorpha Dall and Bartsch, 1909
- Odostomia calliope Bartsch, 1912
- Odostomia canaliculata C. B. Adams, 1850
- Odostomia cancellata D'Orbigny, 1842
- Odostomia candida
- Odostomia canfieldi Dall, 1908
- Odostomia capitana Dall and Bartsch, 1909
- Odostomia cassandra Bartsch, 1912
- Odostomia catalinensis Bartsch, 1927
- Odostomia chinooki Bartsch, 1927
- Odostomia churchi A. G. Smith and M. Gordon, 1948
- Odostomia cincta (Carpenter, 1864)
- Odostomia ciquatonis
- Odostomia clementensis Bartsch, 1927
- Odostomia clementina Dall and Bartsch, 1909
- Odostomia clessini Dall and Bartsch, 1909
- Odostomia columbiana Dall and Bartsch, 1907
- Odostomia conoidea (Brocchi, 1814)
- Odostomia contrerasi Baker, Hanna, and Strong, 1928
- Odostomia convexa
- Odostomia cookeana Bartsch, 1910
- Odostomia cumshewaensis Bartsch, 1921
- Odostomia cypria Dall and Bartsch, 1912
- Odostomia dealbata (Stimpson, 1851)
- Odostomia delicatula Carpenter, 1864
- Odostomia deliciosa Dall and Bartsch, 1907
- Odostomia dicella Bartsch, 1912
- Odostomia didyma (A. E. Verrill and Bush, 1900)
- Odostomia dinella Dall and Bartsch, 1909
- Odostomia disparilis Verrill, 1884
- Odostomia dotella (Dall and Bartsch, 1909)
- Odostomia dux Dall and Bartsch, 1906
- Odostomia eburnea
- Odostomia edmondi Jordan, 1920
- Odostomia eldorana Bartsch, 1912
- Odostomia elsa Dall and Bartsch, 1909
- Odostomia emeryi
- Odostomia engbergi Bartsch, 1920
- Odostomia engonia Bush, 1885
- Odostomia enora Dall and Bartsch, 1909
- Odostomia esilda Dall and Bartsch, 1909
- Odostomia eucosmia Dall and Bartsch, 1909
- Odostomia eugena Dall and Bartsch, 1909
- Odostomia euglypta Jordan, 1920
- Odostomia exara Dall and Bartsch, 1907
- Odostomia excisa Bartsch, 1912
- Odostomia excolpa Bartsch, 1912
- Odostomia eyerdami Bartsch, 1927
- Odostomia farallonensis Dall and Bartsch, 1909
- Odostomia farma Dall and Bartsch, 1909
- Odostomia fernandina (Bartsch In Dall, 1927)
- Odostomia fetella Dall and Bartsch, 1909
- Odostomia fia Bartsch, 1927
- Odostomia floridana (Bartsch In Dall, 1927)
- Odostomia franciscana Bartsch, 1917
- Odostomia gabrielensis
- Odostomia georgiana (Bartsch In Dall, 1927)
- Odostomia gloriosa Bartsch, 1912
- Odostomia gouldii Carpenter, 1864
- Odostomia gracilientis (Keep, 1887)
- Odostomia gravida Gould, 1853
- Odostomia grijalvae Baker, Hanna, and Strong, 1928
- Odostomia grippiana Bartsch, 1912
- Odostomia hagemeisteri Dall and Bartsch, 1909
- Odostomia harfordensis Dall and Bartsch, 1907
- Odostomia havanensis Pilsbry and Aguayo, 1933
- Odostomia heathi A. G. Smith and M. Gordon, 1948
- Odostomia helena Bartsch, 1912
- Odostomia helga Dall and Bartsch, 1909
- Odostomia hemphilli Dall and Bartsch, 1909
- Odostomia hendersoni Bartsch, 1909
- Odostomia herilda Dall and Bartsch, 1909
- Odostomia heterocincta Bartsch, 1912
- Odostomia hypatia Dall and Bartsch, 1912
- Odostomia hypocurta Dall and Bartsch, 1909
- Odostomia iliuliukensis Dall and Bartsch, 1909
- Odostomia inflata Carpenter, 1864
- Odostomia jadisi Olsson and McGinty, 1958
- Odostomia kadiakensis Dall and Bartsch, 1909
- Odostomia kelseyi Bartsch, 1912
- Odostomia kennerleyi Dall and Bartsch, 1907
- Odostomia killisnooensis Dall and Bartsch, 1909
- Odostomia krausei Clessin, 1900
- Odostomia laevigata (d'Orbigny, 1842)
- Odostomia lastra Dall and Bartsch, 1909
- Odostomia laxa Dall and Bartsch, 1909
- Odostomia martensi Dall and Bartsch, 1906
- Odostomia martinensis
- Odostomia mendozae Baker, Hanna, and Strong, 1928
- Odostomia modesta Stimpson, 1851
- Odostomia moratora Dall and Bartsch, 1909
- Odostomia movilla Dall and Bartsch, 1909
- Odostomia navarettei Baker, Hanna, and Strong, 1928
- Odostomia navisa Dall and Bartsch, 1907
- Odostomia nemo Dall and Bartsch, 1909
- Odostomia nivosa
- Odostomia nota Dall and Bartsch, 1909
- Odostomia notilla Dall and Bartsch, 1909
- Odostomia nuciformis Carpenter, 1864
- Odostomia nunivakensis Dall and Bartsch, 1909
- Odostomia oregonensis Dall and Bartsch, 1907
- Odostomia ornatissima (Haas, 1943)
- Odostomia peasei
- Odostomia pesa Dall and Bartsch, 1909
- Odostomia phanella Dall and Bartsch, 1909
- Odostomia pharcida Dall and Bartsch, 1907
- Odostomia plicata (Montagu, 1803)
- Odostomia pocahontasae J. B. Henderson and Bartsch, 1914
- Odostomia porteri Baker, Hanna, and Strong, 1928
- Odostomia pratoma Dall and Bartsch, 1909
- Odostomia producta (C. B. Adams, 1840)
- Odostomia profundicola Dall and Bartsch, 1909
- Odostomia promeces
- Odostomia pulcherrima Dall and Bartsch, 1909
- Odostomia pulcia Dall and Bartsch, 1909
- Odostomia quadrae Dall and Bartsch, 1910
- Odostomia quinquecincta (Carpenter, 1856)
- Odostomia resina Dall and Bartsch, 1909
- Odostomia richi Dall and Bartsch, 1909
- Odostomia ritteri Dall and Bartsch, 1909
- Odostomia ryalea Bartsch In Dall, 1927
- Odostomia ryclea Bartsch In Dall, 1927
- Odostomia sanctorum Dall and Bartsch, 1909
- Odostomia sanjuanensis Bartsch, 1920
- Odostomia sapia Dall and Bartsch, 1909
- Odostomia satura Carpenter, 1864
- Odostomia scalaris MacGillivray, 1843
- Odostomia septentrionalis Dall and Bartsch, 1909
- Odostomia sillana Dall and Bartsch, 1909
- Odostomia sitkaensis Clessin, 1900
- Odostomia skidegatensis Bartsch, 1912
- Odostomia smithii A. E. Verrill, 1880
- Odostomia somersi A. E. Verrill and Bush, 1900
- Odostomia spreadboroughi Dall and Bartsch, 1910
- Odostomia stearnsiella
- Odostomia stephensae Dall and Bartsch, 1909
- Odostomia striata (A. E. Verrill, 1880)
- Odostomia strongi Bartsch, 1927
- Odostomia subdotella Hertlein and Strong, 1951
- Odostomia subglobosa Bartsch, 1912
- Odostomia subturrita Dall and Bartsch, 1909
- Odostomia sulcosa (Mighels, 1843)
- Odostomia tacomaensis Dall and Bartsch, 1907
- Odostomia talpa Dall and Bartsch, 1909
- Odostomia tenuisculpta Carpenter, 1864
- Odostomia teres Bush, 1885
- Odostomia terryi Olsson and Mcginty, 1858
- Odostomia thalia Bartsch, 1912
- Odostomia thea Bartsch, 1912
- Odostomia tornata A. E. Verrill, 1884
- Odostomia toyatani
- Odostomia trachis Dall and Bartsch, 1909
- Odostomia tremperi Bartsch, 1927
- Odostomia trifida (Totten, 1834)
- Odostomia truncatula
- Odostomia turricula Dall and Bartsch, 1903
- Odostomia ulloana Strong, 1949
- Odostomia unalaskensis Dall and Bartsch, 1909
- Odostomia unidentata (Montagu, 1803)
- Odostomia valdezi Dall and Bartsch, 1907
- Odostomia valeroi
- Odostomia vancouverensis Dall and Bartsch, 1910
- Odostomia vicola Dall and Bartsch, 1909
- Odostomia vincta Dall and Bartsch, 1909
- Odostomia virginalis
- Odostomia virginica J. B. Henderson and Bartsch, 1914
- Odostomia vizcainoana Baker, Hanna, and Strong, 1928
- Odostomia washingtonia Bartsch, 1920
- Odostomia whitei Bartsch, 1927
- Odostomia willetti Bartsch, 1917
- Odostomia willisi Bartsch, 1909
- Odostomia winkleyi Bartsch, 1909
- Odostomia youngi Dall and Bartsch, 1910
- Oenopota alaskensis (Dall, 1871)
- Oenopota albrechti (Krause, 1885)
- Oenopota aleutica (Dall, 1871)
- Oenopota alitakensis (Dall, 1919)
- Oenopota althorpensis (Dall, 1919)
- Oenopota althorpi (Dall, 1919)
- Oenopota amiantus (Dall, 1919)
- Oenopota angulosus (G. O. Sars, 1878)
- Oenopota arctica
- Oenopota babylonius (Dall, 1919)
- Oenopota beckii (Moller, 1842)
- Oenopota bergensis (Friele, 1886)
- Oenopota bicarinatus (Couthouy, 1839)
- Oenopota blaneyi (Bush, 1909)
- Oenopota cancellata (Mighels and C. B. Adams, 1842)
- Oenopota chiachiana (Dall, 1919)
- Oenopota cinerea (Moller, 1842)
- Oenopota concinnulus (A. E. Verrill, 1882)
- Oenopota crebricostata (Carpenter, 1864)
- Oenopota decussatus (Couthouy, 1839)
- Oenopota dictyophora Bouchet and Waren, 1980
- Oenopota elegans (Moller, 1842)
- Oenopota eriopis (Dall, 1919)
- Oenopota exaratus (Moller, 1842)
- Oenopota excurvata (Carpenter, 1864)
- Oenopota exquisita (Bartsch, 1941)
- Oenopota fidicula (Gould, 1849)
- Oenopota fiora (Dall, 1919)
- Oenopota galgana (Dall, 1919)
- Oenopota gouldii (A. E. Verrill, 1882)
- Oenopota granitica (Dall, 1919)
- Oenopota graphica (Locard, 1897)
- Oenopota harpa (Dall, 1885)
- Oenopota harpularius (Couthouy, 1838)
- Oenopota healyi (Dall, 1919)
- Oenopota hebes (A. E. Verrill, 1880)
- Oenopota impressa (Morch, 1869)
- Oenopota incisulus (Verrill, 1882)
- Oenopota inequita (Dall, 1919)
- Oenopota inflata (Posselt and A. S. Jensen, 1898)
- Oenopota krausei (Dall, 1886)
- Oenopota kyskana (Dall, 1919)
- Oenopota laevigatus (Dall, 1871)
- Oenopota levidensis (Carpenter, 1864)
- Oenopota lotta (Dall, 1919)
- Oenopota luetkeni (Dall, 1919)
- Oenopota lutkeana (Krause, 1885)
- Oenopota maurellei (Dall and Bartsch, 1910)
- Oenopota metschigmensis (Krause, 1885)
- Oenopota mitrata (Dall, 1919)
- Oenopota mitrula
- Oenopota morchi (Leche, 1878)
- Oenopota murdochiana (Dall, 1885)
- Oenopota nazanensis (Dall, 1919)
- Oenopota nodulosus (Krause, 1885)
- Oenopota novajasemljensis (Leach, 1878)
- Oenopota nunivakensis (Dall, 1919)
- Oenopota obliqua (G. O. Sars, 1878)
- Oenopota ovalis (Friele, 1877)
- Oenopota pavlova (Dall, 1919)
- Oenopota pingelii (Moller, 1842)
- Oenopota pleurotomaria (Couthouy, 1838)
- Oenopota popovius (Dall, 1919)
- Oenopota pribilova (Dall, 1919)
- Oenopota pusilla (A. E. Verrill, 1882)
- Oenopota pyramidalis (Strom, 1788)
- Oenopota pyrimidalis (Strom, 1788)
- Oenopota rassimus (Dall, 1919)
- Oenopota regulus (Dall, 1919)
- Oenopota reticulatus (T. Brown, 1827)
- Oenopota roseus (Loven, 1846)
- Oenopota rufa (Montagu, 1803)
- Oenopota sarsii (A. E. Verrill, 1880)
- Oenopota scalaris (Moller, 1842)
- Oenopota sculpturata (Dall, 1887)
- Oenopota simplex (Middendorff, 1849)
- Oenopota solida (Dall, 1887)
- Oenopota subvitrea (A. E. Verrill, 1884)
- Oenopota tabulata (Carpenter, 1864)
- Oenopota tenuilirata
- Oenopota tenuiliratus
- Oenopota tenuissima (Dall, 1919)
- Oenopota trevelliana (Turton, 1834)
- Oenopota turricula (Montagu, 1803)
- Oenopota violaceus (Mighels and C. B. Adams, 1842)
- Oenopota woodianus (Moller, 1842)
- Ogaridiscus subrupicola (Dall, 1877)
- Okenia angelensis Lance, 1966
- Okenia ascidicola M. P. Morse, 1972
- Okenia aspera (Alder and Hancock, 1845)
- Okenia cupella (Vogel and Schultz, 1970)
- Okenia elegans (Leuckart, 1828)
- Okenia impexa Er. Marcus, 1957
- Okenia leachii (Alder and Hancock, 1854)
- Okenia modesta A. E. Verrill, 1875
- Okenia plana Baba, 1960
- Okenia pulchella Alder and Hancock, 1854
- Okenia quadricornis (Montagu, 1815)
- Okenia sapelona Ev. Marcus and Er. Marcus, 1967
- Okenia vancouverensis (O'Donoghue, 1921)
- Okenia zoobotryon (Smallwood, 1910)
- Oldroydia percrassa (Dall, 1894)
- Olea hansineensis Agersborg, 1923
- Oligyra orbiculata (Say, 1818)
- Oliva bifasciata Kuster, 1878
- Oliva bollingi Clench, 1937
- Oliva reticularis Lamarck, 1810
- Oliva richerti Kay, 1979
- Oliva sayana Ravenel, 1834
- Oliva scripta Lamarck, 1810
- Olivella acteocina
- Olivella alba (Marrat In Sowerby, 1871)
- Olivella alectona (Duclos, 1835)
- Olivella anazora (Duclos, 1835)
- Olivella baetica Carpenter, 1864
- Olivella biplicata (G. B. Sowerby I, 1825)
- Olivella bullula (Reeve, 1850)
- Olivella cymatilis S. S. Berry, 1963
- Olivella dama (Wood, 1828)
- Olivella dealbata (Reeve, 1850)
- Olivella fimbriata
- Olivella fletcherae S. S. Berry, 1958
- Olivella floralia (Duclos, 1853)
- Olivella fuscocincta Dall, 1889
- Olivella gracilis (Broderip and Sowerby, 1828)
- Olivella intorta Carpenter, 1857
- Olivella inusta G. B. Sowerby III, 1915
- Olivella lactea (Marrat, 1871)
- Olivella lineolata
- Olivella macgintyi Olsson, 1956
- Olivella minuta (Link, 1807)
- Olivella moorei Abbott, 1951
- Olivella mutica (Say, 1822)
- Olivella nivea (Gmelin, 1791)
- Olivella parva T. S. Oldroyd, 1921
- Olivella perplexa Olsson, 1956
- Olivella petiolita (Duclos, 1835)
- Olivella purpurata
- Olivella pusilla (Marrat, 1871)
- Olivella rosolina (Duclos, 1835)
- Olivella rotunda Dall, 1889
- Olivella rufifasciatus
- Olivella semistriata (Gray, 1839)
- Olivella sphoni Burch and Campbell, 1963
- Olivella stegeri Olsson, 1956
- Olivella steveni Burch and Campbell, 1963
- Olivella strigata (Reeve, 1850)
- Olivella tabulata Dall, 1889
- Olivella tergina (Duclos, 1835)
- Olivella thompsoni Olsson, 1956
- Olivella verriauxii (Duclos, 1857)
- Olivella walkeri S. S. Berry, 1958
- Olivella watermani McGinty, 1940
- Olivella zanoeta (Duclos, 1835)
- Olivella zonalis (Lamarck, 1811)
- Omalogyra atomus (Philippi, 1841)
- Omalogyra densicostata (Jeffreys, 1884)
- Omalogyra japonica
- Omalogyra planorbis (Dall, 1927)
- Ommastrephes bartramii (Lesueur, 1821)
- Onchidella borealis Dall, 1871
- Onchidella brattstroemi Ev. Marcus, 1978
- Onchidella carpenteri (W. G. Binney, 1860)
- Onchidella celtica (Forbes and Hanley, 1852)
- Onchidella floridana (Dall, 1885)
- Onchidella wah Ev. Marcus, 1978
- Onchidiopsis corys Balch, 1910
- Onchidiopsis glacialis (M. Sars, 1851)
- Onchidiopsis hannai Dall, 1916
- Onchidiopsis kingmaruensis Russell, 1942
- Onchidoris aspersa (Adler and Henderson, 1842)
- Onchidoris bilamellata (Linnaeus, 1767)
- Onchidoris depressa (Alder and Hancock, 1842)
- Onchidoris diademata (Gould, 1870)
- Onchidoris grisea (Gould, 1870)
- Onchidoris hystricina (Bergh, 1878)
- Onchidoris inconspicua (Alder and Hancock, 1851)
- Onchidoris muricata (Muller, 1776)
- Onchidoris oblonga (Alder and Hancock, 1845)
- Onchidoris sparsa (Alder and Hancock, 1846)
- Onchidoris tenella (Gould, 1870)
- Onoba aculeus (Gould, 1841)
- Onoba alaskana (Dall, 1886)
- Onoba aurivillii (Dall, 1887)
- Onoba bakeri (Bartsch, 1910)
- Onoba carpenteri (Weinkauff, 1885)
- Onoba castanella (Dall, 1886)
- Onoba cerinella Dall, 1887
- Onoba dalli (Bartsch, 1927)
- Onoba dimora (Bartsch, 1917)
- Onoba exarata (Stimpson, 1851)
- Onoba forresterensis (Willett, 1934)
- Onoba kyskensis (Bartsch, 1911)
- Onoba mighelsi (Stimpson, 1851)
- Onoba muriei (Bartsch and Rehder, 1939)
- Onoba palmeri (Dall, 1919)
- Onoba pelagica (Stimpson, 1851)
- Onoba semicostata (Montagu, 1803)
- Onobops crassus (F. G. Thompson, 1968)
- Onobops jacksoni (Bartsch, 1953)
- Onychoteuthis banksii (Leach, 1817)
- Onychoteuthis borealijaponicus Okada, 1927
- Onychoteuthis compacta (Berry, 1913)
- Onychoteuthis meridiopacifica Rancurel and Okutani, 1990
- Onykia appellofi (Pfeffer, 1900)
- Onykia carriboea Lesueur, 1821
- Onykia indica Okutani, 1981
- Onykia intermedia (Pfeffer, 1912)
- Onykia platyptera (D'Orbigny, 1834 in 1834-1847)
- Onykia rancureli Okutani, 1981
- Onykia verrilli (Pfeffer, 1900)
- Oocorys abyssorum (Verrill and Smith, 1884)
- Oocorys barbouri Clench and Aguayo, 1939
- Oocorys bartschi Rehder, 1943
- Oocorys caribbaea Clench and Aguayo, 1939
- Oocorys sulcata P. Fischer, 1883
- Oocorys verrillii (Dall, 1889)
- Opalia abbotti Clench and Turner, 1952
- Opalia acus
- Opalia andrewsii (A. E. Verrill, 1882)
- Opalia aurifila (Dall, 1889)
- Opalia borealis Keep, 1881
- Opalia bullata (Carpenter, 1864)
- Opalia burryi Clench and Turner, 1950
- Opalia chacei Strong, 1937
- Opalia crenata (Linnaeus, 1758)
- Opalia crenatoides (Carpenter, 1864)
- Opalia crosseana (Tapparone-canefri, 1876)
- Opalia eolis Clench and Turner, 1950
- Opalia espirita (Baker, Hanna, and Strong, 1930)
- Opalia evicta De Boury, 1919
- Opalia funiculata (Carpenter, 1857)
- Opalia hotessieriana (d'Orbigny, 1842)
- Opalia infrequens (C. B. Adams, 1852)
- Opalia leeana (A. E. Verrill, 1883)
- Opalia montereyensis (Dall, 1907)
- Opalia pumilio (Morch, 1874)
- Opalia retiporosa (Carpenter, 1864)
- Opalia sanjuanensis (Lowe, 1932)
- Opalia spongiosa (Carpenter, 1866)
- Opalia tortilis (Watson, 1883)
- Opalia watsoni (De Boury, 1911)
- Opalia wroblewskii (Morch, 1876)
- Opaliopsis atlantis (Clench and Turner, 1952)
- Opaliopsis concava (Dall, 1889)
- Opeas pumilum (Pfeiffer, 1840)
- Opeas pyrgula Schmacker and Boettger, 1891
- Ophiodermella cancellata (Carpenter, 1864)
- Ophiodermella fancherae (Dall, 1903)
- Ophiodermella halcyonis (Dall, 1908)
- Ophiodermella inermis (Reeve, 1843)
- Ophiodermella montereyensis Bartsch, 1944
- Ophiodermella rhines (Dall, 1908)
- Opisthoteuthis agassizii Verrill, 1883
- Opisthoteuthis californiana Berry, 1949
- Opisthoteuthis depressa Ijima and Ikeda, 1895
- Opisthoteuthis extensa Thiele in Chun, 1915
- Opisthoteuthis grimaldii (Joubin, 1903)
- Opisthoteuthis japonica Taki, 1962
- Opisthoteuthis medusoides Thiele in Chun, 1915
- Opisthoteuthis persephone Berry, 1918
- Opisthoteuthis philipii Oommen, 1976
- Opisthoteuthis pluto Berry, 1918
- Opisthoteuthis vossi Sanchez and Guerra, 1989
- Orbitestella bastowi Gatliff, 1906
- Orbitestella emeryi
- Orbitestella regina
- Oreohelix alpina (Elrod, 1901)
- Oreohelix amariradix Pilsbry, 1934
- Oreohelix anchana Gregg, 1953
- Oreohelix barbata Pilsbry, 1905
- Oreohelix californica S. S. Berry, 1931
- Oreohelix carinifera Pilsbry, 1912
- Oreohelix concentrata (Dall, 1896)
- Oreohelix confragosa Metcalf, 1974
- Oreohelix elrodi (Pilsbry, 1900)
- Oreohelix eurekensis J. Henderson and Daniels, 1916
- Oreohelix florida Pilsbry, 1939
- Oreohelix grahamensis Gregg and W. B. Miller, 1974
- Oreohelix hammeri Fairbanks, 1984
- Oreohelix handi Pilsbry and Ferriss, 1918
- Oreohelix haydeni (Gabb, 1869)
- Oreohelix hemphilli (Newcomb, 1869)
- Oreohelix hendersoni Pilsbry, 1912
- Oreohelix houghi W. B. Marshall, 1929
- Oreohelix howardi Jones, 1944
- Oreohelix idahoensis (Newcomb, 1866)
- Oreohelix intersum (Hemphill, 1890)
- Oreohelix jaegeri S. S. Berry, 1931
- Oreohelix jugalis (Hemphill, 1890)
- Oreohelix junii Pilsbry, 1934
- Oreohelix litoralis Crews and Metcalf, 1982
- Oreohelix magdalenae Pilsbry, 1939
- Oreohelix metcalfei Cockerell, 1905
- Oreohelix nevadensis S. S. Berry, 1932
- Oreohelix parawanensis Gregg, 1941
- Oreohelix peripherica (Ancey, 1881)
- Oreohelix pilsbryi Ferriss, 1917
- Oreohelix pygmaea Pilsbry, 1913
- Oreohelix socorroensis Pilsbry, 1905
- Oreohelix strigosa (Gould, 1846)
- Oreohelix subrudis (Reeve, 1854)
- Oreohelix swopei Pilsbry and Ferriss, 1917
- Oreohelix tenuistriata J. Henderson and Daniels, 1916
- Oreohelix uinta Brooks, 1939
- Oreohelix variabilis J. Henderson, 1929
- Oreohelix vortex S. S. Berry, 1932
- Oreohelix waltoni Solem, 1975
- Oreohelix yavapai Pilsbry, 1905
- Orinella vanhyningi Bartsch, 1944
- Ornithoteuthis antillarum Adam, 1957
- Ornithoteuthis volatilis (Sasaki, 1915)
- Orobitella bakeri (Dall, 1916)
- Orobitella californica (Dall, 1899)
- Orobitella floridana (Dall, 1899)
- Orobitella limpida (Dall, 1899)
- Orobophana baldwini Ancey, 1904
- Orobophana cookei Neal, 1934
- Orobophana juddii Pilsbry and Cooke, 1908
- Orobophana meineckei Neal, 1934
- Orobophana stokesii Neal, 1934
- Orobophana uberta Gould, 1847
- Orthalicus floridensis Pilsbry, 1899
- Orthalicus reses (Say, 1830)
- Ortmanniana ligamentina (Lamarck, 1819)
- Ortmanniana pectorosa (Conrad, 1834)
- Ostrea conchaphila Carpenter
- Ostrea cristata Born, 1778
- Ostrea edulis Linnaeus, 1758
- Ostrea lurida Carpenter, 1864
- Ostrea megadon Hanley, 1846
- Ostrea permollis G. B. Sowerby II, 1871
- Ostrea sandvicensis G. B. Sowerby II, 1871
- Ostrea stentina Payraudeau, 1826
- Otala lactea (Muller, 1774)
- Otina ovata (Brown, 1827)
- Ovatella myosotis (Draparnaud, 1801)
- Oxychilus alliarius (J. S. Miller, 1822)
- Oxychilus cellarius (Muller, 1774)
- Oxychilus draparnaudi (Beck, 1837)
- Oxychilus helveticus (Blum, 1881)
- Oxygyrus keraudrenii (Lesueur, 1817)
- Oxyloma decampi (Tryon, 1866)
- Oxyloma deprimidum Franzen, 1973
- Oxyloma effusum (Pfeiffer, 1853)
- Oxyloma groenlandicum (Moller, 1842)
- Oxyloma hawkinsi (Baird, 1863)
- Oxyloma haydeni (W. G. Binney, 1858)
- Oxyloma kanabense Pilsbry, 1948
- Oxyloma missoula Hubricht, 1982
- Oxyloma nuttallianum (I. Lea, 1841)
- Oxyloma peoriense (Wolf, 1894)
- Oxyloma retusum (I. Lea, 1834)
- Oxyloma salleanum (Pfeiffer, 1849)
- Oxyloma sillimani (Bland, 1865)
- Oxyloma subeffusum Pilsbry, 1948
- Oxyloma verrilli (Bland, 1865)
- Oxynoe antillarum Morch, 1863
- Oxynoe azuropunctata K. R. Jensen, 1980
- Pachynaias rugososulcata (Lea, 1866)
- Pachynaias spheniopsis (Morelet, 1849)
- Pachystremiscus ornatus (Olsson and McGinty, 1958)
- Pachystremiscus pulchellus (Olsson and McGinty, 1958)
- Paedoclione doliiformis Danforth, 1907
- Paetulunio fabalis (Lea, 1831)
- Palio dubia (M. Sars, 1829)
- Palio nothus (Johnston, 1838)
- Palio pallida Bergh, 1880
- Palio zosterae (O'Donoghue, 1924)
- Palisa kristenseni (Ev. Marcus and Er. Marcus, 1963)
- Pallifera dorsalis (A. Binney, 1842)
- Pallifera fosteri F. C. Baker, 1939
- Pallifera hemphilli (W. G. Binney, 1885)
- Pallifera marmorea Pilsbry, 1948
- Pallifera megaphallica Grimm, 1961
- Pallifera ohioensis (Sterki, 1908)
- Pallifera pilsbryi C. D. Miles and Mead, 1960
- Pallifera ragsdalei
- Pallifera secreta (Cockerell, 1900)
- Pallifera tournescalis Branson, 1968
- Pallifera varia Hubricht, 1953
- Palliolum furtivum (Loven, 1846)
- Palliolum imbrifer (Loven, 1846)
- Palliolum leptaleum (Verrill, 1884)
- Palliolum reticulum (Dall, 1886)
- Palliolum ringnesia
- Palliolum striatum (Muller, 1776)
- Palliolum subimbrifer (Verrill and Bush, 1897)
- Palliolum tigerinum (O. F. Mueller, 1776)
- Palliolum undatum
- Panacca arata (A. E. Verrill and S. Smith, 1881)
- Panacca loveni (Jeffreys, 1881)
- Pandora arenosa Conrad, 1834
- Pandora bilirata Conrad, 1855
- Pandora bushiana Dall, 1886
- Pandora cornuta C. B. Adams, 1852
- Pandora filosa (Carpenter, 1864)
- Pandora forresterensis Willett, 1918
- Pandora glacialis Leach, 1819
- Pandora gouldiana Dall, 1886
- Pandora grandis Dall, 1877
- Pandora granulata (Dall, 1915)
- Pandora inaequivalvis (Linnaeus, 1758)
- Pandora inflata Boss and Merrill, 1965
- Pandora inornata A. E. Verrill and Bush, 1898
- Pandora pinna (Montagu, 1803)
- Pandora punctata Conrad, 1837
- Pandora radiata Sowerby, 1835
- Pandora trilineata Say, 1822
- Pandora wardiana A. Adams, 1859
- Panomya ampla Dall, 1898
- Panomya beringiana Dall, 1916
- Panomya granulata
- Panomya norvegica (Spengler, 1793)
- Panomya priapus (Tilesius, 1822)
- Panopea abrupta (Conrad, 1849)
- Panopea bitruncata (Conrad, 1872)
- Panopea generosa Gould, 1850
- Papustyla pulcherrima
- Papyridea semisulcata (J. E. Gray, 1825)
- Papyridea soleniformis (Bruguiere, 1789)
- Parabornia squillina Boss, 1965
- Paraclione longicaudata (Souleyet, 1852)
- Parahyotissa mcgintyi Harry, 1985
- Paralaoma caputspinulae (Reeve, 1852)
- Parallelodon rugosus Buckman
- Paramya subovata (Conrad, 1845)
- Parapholas californica (Conrad, 1837)
- Parashiela beetsi
- Parastarte triquetra (Conrad, 1846)
- Parateuthis tunicata Thiele, 1920
- Paravitrea alethia Hubricht, 1978
- Paravitrea amicalola Hubricht, 1976
- Paravitrea andrewsae (W. G. Binney, 1879)
- Paravitrea aulacogyra (Pilsbry and Ferris, 1906)
- Paravitrea bellona Hubricht, 1978
- Paravitrea bidens Hubricht, 1963
- Paravitrea blarina Hubricht, 1963
- Paravitrea calcicola H. B. Baker, 1931
- Paravitrea capsella (Gould, 1851)
- Paravitrea ceres Hubricht, 1978
- Paravitrea clappi (Pilsbry, 1898)
- Paravitrea conecuhensis (G. H. Clapp, 1917)
- Paravitrea dentilla Hubricht, 1978
- Paravitrea diana Hubricht, 1983
- Paravitrea grimmi Hubricht, 1968
- Paravitrea hera Hubricht, 1983
- Paravitrea lacteodens (Pilsbry, 1903)
- Paravitrea lamellidens (Pilsbry, 1898)
- Paravitrea lapilla Hubricht, 1965
- Paravitrea metallacta Hubricht, 1963
- Paravitrea mira Hubricht, 1975
- Paravitrea multidentata (A. Binney, 1840)
- Paravitrea petrophila (Bland, 1883)
- Paravitrea pilsbryana (G. H. Clapp, 1919)
- Paravitrea placentula (Shuttleworth, 1852)
- Paravitrea pontis H. B. Baker, 1931
- Paravitrea reesei Morrison, 1937
- Paravitrea septadens Hubricht, 1978
- Paravitrea seradens Hubricht, 1972
- Paravitrea significans (Bland, 1866)
- Paravitrea simpsoni (Pilsbry, 1889)
- Paravitrea smithi (Walker, 1928)
- Paravitrea subtilis Hubricht, 1978
- Paravitrea tantilla Hubricht, 1963
- Paravitrea ternaria Hubricht, 1978
- Paravitrea tiara Hubricht, 1978
- Paravitrea toma Hubricht, 1975
- Paravitrea tridens Pilsbry, 1946
- Paravitrea umbilicaris (Ancey, 1887)
- Paravitrea variabilis H. B. Baker, 1929
- Paravitrea varidens Hubricht, 1978
- Pareledone adelieana (Berry, 1917)
- Pareledone charcoti (Joubin, 1905)
- Pareledone framensis Lu and Stranks, 1994
- Pareledone harrissoni (Berry, 1917)
- Pareledone polymorpha (Robson, 1930)
- Pareledone prydzensis Lu and Stranks, 1994
- Pareledone turqueti (Joubin, 1905)
- Parreysia corrugata (Müller, 1774)
- Parreysia keralaensis Bolotov, Pasupuleti & Subba Rao in Bolotov et al., 2022
- Parreysia nagpoorensis (Lea, 1860)
- Parreysia plagiosoma (Benson, 1862)
- Parreysia rajahensis (Lea, 1841)
- Parreysia rakhinensis Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Parvamussium alaskense (Dall, 1871)
- Parvanachis obesa (C. B. Adams, 1845)
- Parvanachis ostreicola (G. B. Sowerby III, 1882)
- Parvasolenaia neotriangularis (He & Zhuang, 2013)
- Parvasolenaia rivularis (Heude, 1877)
- Parvasolenaia triangularis (Heude, 1885)
- Parvaspina collina (Conrad, 1837)
- Parvaspina steinstansana (R. I. Johnson & Clarke, 1983)
- Parvicardium elegantulum (Moller, 1842)
- Parvicardium exiguum (Gmelin, 1791)
- Parvicardium hauniense (Høpner Petersen & Russell, 1971)
- Parvicardium minimum (Philippi, 1836)
- Parvicardium ovale (G. B. Sowerby, 1840)
- Parvicardium scabrum Philippi, 1844
- Parvilucina approximata (Dall, 1901)
- Parvilucina blanda (Bland and Simpson, 1901)
- Parvilucina costata (d'Orbigny, 1842)
- Parvilucina lampra (Dall, 1901)
- Parvilucina lingualis (Carpenter, 1864)
- Parvilucina mazatlanica (Carpenter, 1855)
- Parvilucina multilineata (Tuomey and Holmes, 1857)
- Parvilucina tenuisculpta (Carpenter, 1864)
- Parviphos adelus (Schwengel, 1942)
- Parviturbo acuticostatus (Carpenter, 1864)
- Parviturbo calidimaris Pilsbry and McGinty, 1945
- Parviturbo comptus (Woodring, 1928)
- Parviturbo concepcionensis (Lowe, 1935)
- Parviturbo francesae Pilsbry and McGinty, 1945
- Parviturbo rehderi Pilsbry and McGinty, 1945
- Parviturbo stearnsi (Dall, 1918)
- Parviturbo turbinus (Dall, 1889)
- Parviturbo weberi Pilsbry and McGinty, 1945
- Parviturboides interruptus (C. B. Adams, 1850)
- Patella asprea
- Patella depressa
- Patella intermedia
- Patella mexicana Broderip and Sowerby, 1829
- Patella ulyssiponensis Gmelin, 1791
- Patella vulgata
- Patelloida pustulata (Helbling, 1779)
- Patera appressa (Say, 1821)
- Patera binneyana (Pilsbry, 1899)
- Patera clarki (I. Lea, 1858)
- Patera clenchi (Rehder, 1932)
- Patera indianorum (Pilsbry, 1899)
- Patera kiowaensis (Simpson, 1888)
- Patera laevior (Pilsbry, 1940)
- Patera leatherwoodi (Pratt, 1971)
- Patera panselenus (Hubricht, 1976)
- Patera pennsylvanica (Green, 1827)
- Patera perigrapta (Pilsbry, 1894)
- Patera roemeri (Pfeiffer, 1848)
- Patera sargentiana (C. W. Johnson and Pilsbry, 1892)
- Patina pellucida (Linnaeus, 1758)
- Patinopecten caurinus (Gould, 1850)
- Paziella nuttingi (Dall, 1896)
- Paziella oregonia (Bullis, 1964)
- Paziella pazi (Crosse, 1869)
- Pazionotus stimpsonii (Dall, 1889)
- Pecosorbis kansasensis (S. S. Berry, 1966)
- Pecten chazaliei Dautzenberg, 1900
- Pecten eucymatus
- Pecten maximus (Linnaeus, 1758)
- Pectinella sigsbeei (Dall, 1886)
- Pectinodonta arcuata Dall, 1882
- Pedicularia californica Newcomb, 1864
- Pedicularia decussata Gould, 1855
- Pedipes angulatus C. B. Adams, 1852
- Pedipes mirabilis (Megerle von Muhlfeld, 1816)
- Pedipes ovalis (C. B. Adams, 1849)
- Pedipes unisulcatus J. G. Cooper, 1867
- Pegias fabula (Lea, 1838)
- Pelseneeria stimpsonii (A. E. Verrill, 1872)
- Peltodoris greeleyi MacFarland, 1909
- Pelycidion kelseyi (Bartsch, 1911)
- Penitella conradi Valenciennes, 1846
- Penitella fitchi Turner, 1955
- Penitella gabbii (Tryon, 1863)
- Penitella hopkinsi Kennedy and Armentrout, 1989
- Penitella kamakurensis (Yokoyama, 1922)
- Penitella penita (Conrad, 1837)
- Penitella richardsoni Kennedy, 1989
- Penitella turnerae Evans and Fisher, 1966
- Peracle apicifulva Meisenheimer, 1906
- Peracle bispinosa Pelseneer, 1888
- Peracle diversa di Monterosato, 1875
- Peracle moluccensis Tesch, 1913
- Peracle reticulata (d'Orbigny, 1836)
- Peracle triacantha P. Fischer, 1882
- Periglypta listeri (J. E. Gray, 1838)
- Periglypta multicostata (Sowerby, 1835)
- Peringia ulvae (Pennant, 1777)
- Periploma abyssorum
- Periploma affine A. E. Verrill and Bush, 1898
- Periploma alaskanum Williams, 1940
- Periploma aleuticum (Krause, 1885)
- Periploma anguliferum (Philippi, 1847)
- Periploma discus Stearns, 1890
- Periploma fragile (Totten, 1835)
- Periploma leanum (Conrad, 1831)
- Periploma margaritaceum (Lamarck, 1801)
- Periploma orbiculare
- Periploma papyratium (Say, 1822)
- Periploma planiusculum G. B. Sowerby I, 1834
- Periploma tenerum P. Fischer, 1882
- Peristichia agria Dall, 1889
- Peristichia pedroana (Dall and Bartsch, 1909)
- Peristichia toreta Dall, 1889
- Perna perna (Linnaeus, 1758)
- Perotrochus adansonianus (Crosse and P. Fischer, 1861)
- Perotrochus amabilis (Bayer, 1963)
- Perotrochus atlanticus Rios and Matthews, 1968
- Perotrochus gemma F. M. Bayer, 1965
- Perotrochus lucaya F. M. Bayer, 1965
- Perotrochus maureri Harasewych and Askew, 1993
- Perotrochus midas F. M. Beyer, 1965
- Perotrochus notialis Leme, 1969
- Perotrochus pyramus F. M. Bayer, 1967
- Perotrochus quoyanus (P. Fischer and Bernardi, 1856)
- Persicula catenata (Montagu, 1803)
- Persicula fluctuata (C. B. Adams, 1850)
- Persicula pulcherrima (Gaskoin, 1849)
- Petalifera petalifera (Rang, 1828)
- Petalifera ramosa Baba, 1959
- Petaloconchus compactus (Carpenter, 1864)
- Petaloconchus complicatus Dall, 1908
- Petaloconchus contortus (Carpenter, 1856)
- Petaloconchus erectus (Dall, 1888)
- Petaloconchus flavescens (Carpenter, 1857)
- Petaloconchus macrophragma (Carpenter, 1856)
- Petaloconchus montereyensis Dall, 1919
- Petaloconchus varians (d'Orbigny, 1841)
- Petitilla crosseana (Dall, 1885)
- Petricola californiensis Pilsbry and Lowe, 1932
- Petricola carditoides (Conrad, 1837)
- Petricola hertzana Coan, 1997
- Petricola lapicida (Gmelin, 1791)
- Petricola lithophaga (Retzius, 1786)
- Petricola lucasana Herlein and Strong, 1948
- Petricolaria pholadiformis (Lamarck, 1818)
- Phalium coronadoi (Crosse, 1867)
- Phalium granulatum (Born, 1778)
- Phaseolus ovatus Sequenza, 1877
- Phaxas pellucidus (Pennant, 1777)
- Phenacovolva piragua (Dall, 1889)
- Phidiana elegans (Alder and Hancock, 1845)
- Phidiana hiltoni (O'Donoghue, 1927)
- Phidiana lynceus Bergh, 1867
- Phidiana pselliotes Labbe, 1923
- Phidiana pugnax Lance, 1962
- Philbertia purpurea
- Philine alba Mattox, 1958
- Philine amabilis Verrill, 1880
- Philine angulata Jeffreys, 1867
- Philine aperta (Linnaeus, 1767)
- Philine auriformis Suter, 1909
- Philine bakeri Dall, 1919
- Philine californica Willett, 1944
- Philine catena (Montagu, 1803)
- Philine cingulata G. O. Sars, 1878
- Philine denticulata (J. Adams, 1800)
- Philine finmarchica M. Sars, 1858
- Philine fragilis G. O. Sars, 1878
- Philine infortunata Pilsbry, 1895
- Philine infundibulum Dall, 1889
- Philine lima (T. Brown, 1825)
- Philine loveni Malm, 1858
- Philine polaris Aurivillius, 1885
- Philine polystrigma (Dall, 1908)
- Philine pruinosa
- Philine punctata (J. Adams, 1800)
- Philine quadrata (S. V. Wood, 1839)
- Philine sagra (d'Orbigny, 1841)
- Philine scabra Muller, 1784
- Philine sinuata Stimpson, 1851
- Philine tincta A. E. Verrill, 1882
- Philinoglossa helgolandica Hertling, 1932
- Philinoglossa praelongata Salvivi-plawen, 1973
- Philinoglossa remanei Marcus and Marcus, 1958
- Philinopsis pusa (Ev. Marcus and Er. Marcus, 1967)
- Philippia hybrida (Linnaeus, 1758)
- Philippia krebsii (Morch, 1875)
- Philippia lutea (Lamarck, 1822)
- Philippia nobilis
- Philippia oxytropis
- Philippia radiata
- Philobrya atlantica Dall, 1895
- Philobrya inconspicua Olsson and McGinty, 1958
- Philobrya setosa (Carpenter, 1864)
- Philomycus batchi Branson, 1968
- Philomycus bisdosus Branson, 1968
- Philomycus carolinianus (Bosc, 1802)
- Philomycus flexuolaris Rafinesque, 1820
- Philomycus sellatus Hubricht, 1972
- Philomycus togatus (Gould, 1841)
- Philomycus venustus Hubricht, 1953
- Philomycus virginicus Hubricht, 1953
- Pholadidea loscombiana Turton, 1819
- Pholas campechiensis Gmelin, 1791
- Pholas dactylus Linnaeus, 1758
- Pholidoteuthis adami Voss, 1956
- Pholidoteuthis boschmai Adam, 1950
- Phos senticosus (Linnaeus, 1758)
- Phreatoceras taylori (Hershler and Longley, 1986)
- Phreatodrobia conica Hershler and Longley, 1986
- Phreatodrobia coronae Hershler and Longley, 1987
- Phreatodrobia imitata Hershler and Longley, 1986
- Phreatodrobia micra (Pilsbry and Ferriss, 1906)
- Phreatodrobia nugax (Pilsbry and Ferriss, 1906)
- Phreatodrobia plana Hershler and Longley, 1986
- Phreatodrobia punctata Hershler and Longley, 1986
- Phreatodrobia rotunda Hershler and Longley, 1986
- Phyllaplysia cymodacea K. B. Clark, 1976
- Phyllaplysia engeli Er. Marcus, 1955
- Phyllaplysia smaragda K. B. Clark, 1977
- Phyllaplysia taylori Dall, 1900
- Phyllidiopsis berghi Vayssiere, 1902
- Phyllidiopsis blanca Gosliner and Behrens, 1988
- Phyllidiopsis papilligera Bergh, 1890
- Phylliroe atlantica Bergh, 1871
- Phylliroe bucephalum Peron and Lesueur, 1810
- Phyllobranchillus viridis (Deshayes, 1857)
- Phymorhynchus alberti (Dautzenberg and Fischer, 1906)
- Physa carolinae Wethington, Dillon and Wise, 2009
- Physa fontinalis (Linnaeus, 1758)
- Physa jennessi Dall, 1919
- Physa megalochlamys Taylor, 1988
- Physa natricina Taylor, 1988
- Physa siberica Westerlund, 1876
- Physa skinneri Taylor, 1954
- Physa vernalis Taylor and Jokinen, 1984
- Physella acuta (Draparnaud, 1805)
- Physella ancillaria (Say, 1825)
- Physella bermudezi (Aguayo, 1935)
- Physella bottimeri (Clench, 1924)
- Physella boucardi (Crosse and P. Fischer, 1881)
- Physella columbiana (Hemphill, 1890)
- Physella conoidea (P. Fischer and Crosse, 1886)
- Physella cooperi (Tryon, 1865)
- Physella costata (Newcomb, 1861)
- Physella cubensis (Pfeiffer, 1839)
- Physella globosa (Haldeman, 1841)
- Physella gyrina (Say, 1821)
- Physella hemphilli Taylor, 2003
- Physella hendersoni (Clench, 1925)
- Physella heterostropha (Say, 1817)
- Physella hordacea (Lea, 1864)
- Physella humerosa (Gould, 1855)
- Physella integra (Haldeman, 1841)
- Physella johnsoni (Clench, 1926)
- Physella lordi (Baird, 1863)
- Physella magnalacustris (Walker, 1901)
- Physella mexicana (Philippi, 1841)
- Physella microstriata (Chamberlin and E. G. Berry, 1930)
- Physella osculans (Haldeman, 1841)
- Physella parkeri (Currier, 1881)
- Physella pomilia (Conrad, 1834)
- Physella propinqua (Tryon, 1865)
- Physella spelunca (Turner and Clench, 1974)
- Physella squalida (Morelet, 1851)
- Physella traski (Lea, 1864)
- Physella utahensis (Clench, 1925)
- Physella vinosa (Gould, 1848)
- Physella virgata (Gould, 1855)
- Physella virginea (Gould, 1847)
- Physella winnipegensis Pip, 2004
- Physella wrighti Te and Clarke, 1985
- Physella zionis (Pilsbry, 1926)
- Physunio massini (Morelet, 1864)
- Physunio modelli Brandt, 1974
- Physunio pellucidus Pfeiffer, Graf, Cummings & Page, 2021
- Physunio superbus (Lea, 1843)
- Phytia myosotis Say, 1822
- Pickfordiateuthis pulchella Voss, 1953
- Pickfordiateuthis vossi Brakoniecki, 1996
- Piliscus commodus (Middendorff, 1851)
- Pillucina hawaiiensis
- Pillucina spaldingi Pilsbry, 1921
- Pilsbryna aurea H. B. Baker, 1929
- Pilsbryna castanea H. B. Baker, 1931
- Pilsbryoconcha acuta Jeratthitikul & Prasankok in Jeratthitikul et al., 2022
- Pilsbryoconcha carinifera (Conrad, 1837)
- Pilsbryoconcha exilis (Lea, 1838)
- Pilsbryoconcha expressa (Martens, 1900)
- Pilsbryoconcha hoikaab Jeratthitikul & Prasankok in Jeratthitikul et al., 2022
- Pilsbryoconcha kittitati Jeratthitikul & Prasankok in Jeratthitikul et al., 2022
- Pilsbryoconcha linguaeformis (Morelet, 1875)
- Pilsbryoconcha mekongiana Jeratthitikul & Prasankok in Jeratthitikul et al., 2022
- Pilsbryoconcha schomburgki (Martens, 1860)
- Pilsbryspira albocincta (C. B. Adams, 1845)
- Pilsbryspira albomaculata (d'Orbigny, 1842)
- Pilsbryspira jayana (C. B. Adams, 1850)
- Pilsbryspira leucocyma (Dall, 1884)
- Pilsbryspira monilis (Bartsch and Rehder, 1939)
- Pilsbryspira zebroides (Weinkauff, 1876)
- Pinctada galtsoffi
- Pinctada imbricata Roding, 1798
- Pinctada margaritifera (Linnaeus, 1758)
- Pinna bicolor Gmelin, 1791
- Pinna carnea Gmelin, 1791
- Pinna muricata Linnaeus, 1758
- Pinna rudis Linnaeus, 1758
- Pisania pusio (Linnaeus, 1758)
- Piseinotecus divae Er. Marcus, 1955
- Piseinotecus evelinae
- Pisidium adamsi Stimpson, 1851
- Pisidium amnicum (Muller, 1774)
- Pisidium casertanum (Poli, 1791)
- Pisidium compressum Prime, 1852
- Pisidium conventus Clessin, 1877
- Pisidium cruciatum Sterki, 1895
- Pisidium dubium (Say, 1817)
- Pisidium equilaterale Prime, 1852
- Pisidium fallax Sterki, 1896
- Pisidium ferrugineum Prime, 1852
- Pisidium henslowanum (Sheppard, 1825)
- Pisidium idahoense E. W. Roper, 1890
- Pisidium insigne Gabb, 1868
- Pisidium lilljeborgi (Clessin, 1886)
- Pisidium milium Held, 1836
- Pisidium nitidum Jenyns, 1832
- Pisidium punctatum Sterki, 1895
- Pisidium punctiferum (Guppy, 1867)
- Pisidium rotundatum Prime, 1852
- Pisidium sanguinichristi Taylor, 1987
- Pisidium subtruncatum Malm, 1855
- Pisidium supinum Schmidt, 1850
- Pisidium ultramontanum Prime, 1865
- Pisidium variabile Prime, 1852
- Pisidium ventricosum Prime, 1851
- Pisidium walkeri Sterki, 1895
- Pitar albidus (Gmelin, 1791)
- Pitar arestus (Dall and Simpson, 1901)
- Pitar cordatus (Schwengel, 1951)
- Pitar fulminatus (Menke, 1828)
- Pitar morrhuanus (Linsley, 1848)
- Pitar newcombianus (Gabb, 1865)
- Pitar pilula Rehder, 1943
- Pitar simpsoni (Dall, 1895)
- Pitar zonatus (Dall, 1902)
- Placida dendritica (Alder and Hancock, 1843)
- Placida kingstoni T. E. Thompson, 1977
- Placiphorella atlantica (A. E. Verrill and S. Smith, 1882)
- Placiphorella borealis Pilsbry, 1893
- Placiphorella mirabilis R. N. Clark, 1994
- Placiphorella rufa S. S. Berry, 1917
- Placiphorella stimpsoni (Gould, 1859)
- Placiphorella velata Dall, 1879
- Placopecten magellanicus (Gmelin, 1791)
- Plagiocardium papillosum (Poli, 1795)
- Planaxis lineatus (E. M. da Costa, 1778)
- Planaxis nucleus (Bruguiere, 1789)
- Planaxis obsoletus Menke, 1851
- Planaxis sulcatus Born, 1778
- Planctoteuthis danae (Joubin, 1931)
- Planctoteuthis levimana (Lönnberg, 1896)
- Planctoteuthis oligobessa (Young, 1972)
- Planitrochus amicus Perner, 1903
- Planitrochus disculus (Dall, 1889)
- Planktomya henseni Simroth, 1896
- Planogyra asteriscus (E. S. Morse, 1857)
- Planogyra clappi (Pilsbry, 1898)
- Planorbella ammon (Gould, 1855)
- Planorbella binneyi (Tryon, 1867)
- Planorbella campanulata (Say, 1821)
- Planorbella columbiensis (F. C. Baker, 1945)
- Planorbella corpulenta (Say, 1824)
- Planorbella duryi (Wetherby, 1879)
- Planorbella magnifica (Pilsbry, 1903)
- Planorbella multivolvis (Case, 1847)
- Planorbella occidentalis (J. G. Cooper, 1870)
- Planorbella oregonensis (Tryon, 1865)
- Planorbella pilsbryi (F. C. Baker, 1926)
- Planorbella scalaris (Jay, 1839)
- Planorbella subcrenata (Carpenter, 1857)
- Planorbella tenuis (Dunker, 1850)
- Planorbella traski (Lea, 1856)
- Planorbella trivolvis (Say, 1817)
- Planorbella truncata (M. Miles, 1861)
- Planorbis corneus (Linnaeus, 1758)
- Planorbula armigera (Say, 1821)
- Planorbula campestris (Dawson, 1875)
- Platycythara elata (Dall, 1889)
- Platydoris angustipes (Morch, 1863)
- Platydoris macfarlandi Hanna, 1951
- Platydoris stomascuta Bouchet, 1977
- Platyodon cancellatus (Conrad, 1837)
- Plectodon granulatus (Dall, 1881)
- Plectodon scaber Carpenter, 1864
- Plectomerus dombeyanus (Valenciennes in Humboldt & Bonpland, 1827)
- Pleiodon ovatus (Swainson, 1823)
- Pleiodon spekii (Woodward, 1859)
- Plesarionta stearnsiana (Gabb, 1867)
- Plesiocystiscus jewettii (Carpenter, 1856)
- Plesiocystiscus myrmecoon (Dall, 1919)
- Plesiocystiscus politulus (Dall, 1919)
- Plesiothyreus crenulata (Broderip, 1834)
- Plesiothyreus hamillei (P. Fischer, 1857)
- Plesiothyreus malonei (Vanatta, 1912)
- Plesiothyreus osculans (C. B. Adams, 1852)
- Plesiotrochus luteus
- Plethobasus cicatricosus (Say, 1829)
- Plethobasus cooperianus (Lea, 1834)
- Plethobasus cyphyus (Rafinesque, 1820)
- Pletholophus honglinhensis Bogan, Do, Froufe & Lopes-Lima, 2023
- Pletholophus reinianus (Martens, 1875)
- Pletholophus tenuis (Griffith & Pidgeon, 1833)
- Pleurobema athearni Gangloff, Williams & Feminella, 2006
- Pleurobema beadleianum (Lea, 1861)
- Pleurobema clava (Lamarck, 1819)
- Pleurobema cordatum (Rafinesque, 1820)
- Pleurobema curtum (Lea, 1859)
- Pleurobema decisum (Lea, 1831)
- Pleurobema fibuloides (Lea, 1859)
- Pleurobema georgianum (Lea, 1841)
- Pleurobema hanleyianum (Lea, 1852)
- Pleurobema hartmanianum (Lea, 1860)
- Pleurobema marshalli Frierson, 1927
- Pleurobema oviforme (Conrad, 1834)
- Pleurobema perovatum (Conrad, 1834)
- Pleurobema plenum (Lea, 1840)
- Pleurobema pyriforme (Lea, 1857)
- Pleurobema riddellii (Lea, 1862)
- Pleurobema rubellum (Conrad, 1834)
- Pleurobema rubrum (Rafinesque, 1820)
- Pleurobema sintoxia (Rafinesque, 1820)
- Pleurobema stabile (Lea, 1861)
- Pleurobema strodeanum (B. H. Wright, 1898)
- Pleurobema taitianum (Lea, 1834)
- Pleurobema verum (Lea, 1861)
- Pleurobranchaea bonnieae Ev. Marcus and Gosliner, 1984
- Pleurobranchaea californica MacFarland, 1966
- Pleurobranchaea hedgpethi Abbott, 1952
- Pleurobranchaea inconspicua Bergh, 1897
- Pleurobranchaea tarda A. E. Verrill, 1880
- Pleurobranchus areolatus Morch, 1863
- Pleurobranchus membranaceus
- Pleurobranchus reesi White, 1952
- Pleurobranchus stringi Mcfarland, 1966
- Pleurocera acuta Rafinesque, 1831
- Pleurocera alveare (Conrad, 1834)
- Pleurocera annulifera (Conrad, 1834)
- Pleurocera brumbyi (Lea, 1852)
- Pleurocera canaliculata (Say, 1821)
- Pleurocera corpulenta (Anthony, 1854)
- Pleurocera curta (Haldeman, 1841)
- Pleurocera foremani (Lea, 1843)
- Pleurocera gradata (Anthony, 1854)
- Pleurocera nobilis (Lea, 1845)
- Pleurocera parva (Lea, 1862)
- Pleurocera postelli (Lea, 1862)
- Pleurocera prasinata (Conrad, 1834)
- Pleurocera pyrenella (Conrad, 1834)
- Pleurocera showalteri (Lea, 1862)
- Pleurocera striatum (Lea, 1863)
- Pleurocera trochiformis (Conrad, 1834)
- Pleurocera uncialis (Haldeman, 1841)
- Pleurocera vestita (Conrad, 1834)
- Pleurocera walkeri Goodrich, 1928
- Pleuromalaxis balesi (Pilsbry and McGinty, 1945)
- Pleuromalaxis lamellifera (Rehder, 1934)
- Pleuromalaxis pauli (Olsson and McGinty, 1958)
- Pleuromalaxis retifera (Dall, 1892)
- Pleuromeris armilla (Dall, 1903)
- Pleuromeris perplana (Conrad, 1841)
- Pleuromeris tridentata (Say, 1826)
- Pleuronaia barnesiana (Lea, 1838)
- Pleuronaia dolabelloides (Lea, 1840)
- Pleuronaia gibber (Lea, 1838)
- Pleuroploca gigantea (Kiener, 1840)
- Pleuropoma kauaiensis Pilsbry and Cooke, 1908
- Pleuropoma laciniosa Mighels, 1945
- Pleuropoma niilauensis Neal, 1934
- Pleuropoma nonouensis Neal, 1934
- Pleuropoma oahuensis Pilsbry and Cooke, 1908
- Pleuropoma rotelloidea Mighels, 1845
- Pleuropoma sulculosa Ancey, 1904
- Pleurotomella agassizi Verrill and Smith, 1880
- Pleurotomella aperta Dall, 1927
- Pleurotomella aquilarium
- Pleurotomella atypica
- Pleurotomella bairdi Verrill and Smith, 1884
- Pleurotomella benedicti Verrill, 1872
- Pleurotomella blakeana (Dall, 1889)
- Pleurotomella bruneri Verrill and Smith, 1884
- Pleurotomella catherinae Verrill and Smith, 1884
- Pleurotomella chariessa
- Pleurotomella corrida Dall, 1927
- Pleurotomella curta (Verrill, 1884)
- Pleurotomella dalli Bush, 1893
- Pleurotomella emertonii Verrill and Smith, 1884
- Pleurotomella engonia (Verrill, 1884)
- Pleurotomella eurybrocha (Dautzenberg and Fischer, 1896)
- Pleurotomella extensa (Dall, 1881)
- Pleurotomella formosa Jeffreys, 1883
- Pleurotomella frielei Verrill, 1885
- Pleurotomella hadria Dall, 1889
- Pleurotomella herminea Dall, 1919
- Pleurotomella illicita (Dall, 1927)
- Pleurotomella imitator (Dall, 1927)
- Pleurotomella lanceata (Dall, 1927)
- Pleurotomella leptalea Bush, 1893
- Pleurotomella leucomata (Dall, 1881)
- Pleurotomella lineola Dall, 1927
- Pleurotomella lottae Verrill, 1885
- Pleurotomella lyronuclea (Dall, 1881)
- Pleurotomella packardii A. E. Verrill, 1872
- Pleurotomella pandionis Verrill, 1880
- Pleurotomella sandersoni Verrill, 1884
- Pleurotomella sulcifera Bush, 1893
- Pleurotomella thalassica Dall, 1919
- Pleurotomella tincta Verrill, 1885
- Pleurotomella tornata (Verrill, 1884)
- Pleurotomella vaginata Dall, 1927
- Pleurotomella vitrea Verrill, 1885
- Plicatula gibbosa Lamarck, 1801
- Plicifusus cretaceus (Reeve, 1847)
- Plicifusus elaeoides
- Plicifusus stejnegeri
- Plicopurpura patula (Linnaeus, 1758)
- Pneumoderma mediterraneum (van Beneden, 1838)
- Pneumoderma violaceum (d'Orbigny, 1836)
- Pneumodermopsis canephora Pruvot-fol, 1924
- Pneumodermopsis ciliata (Gegenbauer, 1855)
- Pneumodermopsis macrochira (Meisenheimer, 1905)
- Pneumodermopsis michaelsarsi Bonnevie, 1913
- Pneumodermopsis oligocotyla Massy, 1917
- Pneumodermopsis paucidens (Boas, 1886)
- Pneumodermopsis pupula Pruvot-fol, 1926
- Pneumodermopsis teschi Spoel, 1973
- Pododesmus macrochisma (Deshayes, 1839)
- Pododesmus patelliformis (Linnaeus, 1761)
- Pododesmus pernoides (J. E. Gray, 1853)
- Pododesmus rudis (Broderip, 1834)
- Poirieria bowdenensis E. H. Vokes, 1970
- Poirieria nuttingi (Dall, 1896)
- Poirieria pazi (Crosse, 1869)
- Poirieria stimpsonii (Dall, 1889)
- Policordia alaskana (Dall, 1895)
- Policordia densicostata (Locard, 1898)
- Policordia gemma (A. E. Verrill, 1880)
- Policordia insculpta (Jeffreys, 1881)
- Policordia jeffreysi (Friele, 1879)
- Polinices aperinus
- Polinices bahamiensis (Dall, 1825)
- Polinices bifasciatus (Griffith and Pidgeon, 1834)
- Polinices draconis (Dall, 1903)
- Polinices duplicatus (Say, 1822)
- Polinices helicoides (Gray, 1825)
- Polinices hepaticus (Roding, 1798)
- Polinices heros Say, 1822
- Polinices lacteus (Guilding, 1834)
- Polinices leptaleus Watson, 1881
- Polinices monteronis
- Polinices nanus Moller, 1842
- Polinices nubilus Dall, 1889
- Polinices otis Broderip and Sowerby, 1829
- Polinices politiana
- Polinices uber (Valenciennes, 1832)
- Polinices uberinus (d'Orbigny, 1842)
- Pollia auritula (Link, 1807)
- Pollia karinae (Nowell-Usticke, 1959)
- Pollia tincta Conrad, 1846
- Polybranchia viridis (Deshayes, 1857)
- Polycera atra MacFarland, 1905
- Polycera aurisula Er. Marcus, 1957
- Polycera chilluna Er. Marcus, 1961
- Polycera dubia (M. Sars, 1829)
- Polycera faeroensis Lemche, 1929
- Polycera hedgpethi Er. Marcus, 1964
- Polycera hummi Abbott, 1952
- Polycera odhneri Er. Marcus, 1955
- Polycera quadrilineata Muller, 1776
- Polycera rycia Er. Marcus and Ev. Marcus, 1970
- Polycera tricolor Robilliard, 1971
- Polycera zosterae O'Donoghue, 1924
- Polycerella conyna E. Marcus, 1957
- Polycerella davenportii
- Polycerella emertoni A. E. Verrill, 1881
- Polycerella glandulosa Behrens and Gosliner, 1988
- Polygireulima rutila (Carpenter, 1866)
- Polygyra auriculata Say, 1818
- Polygyra auriformis (Bland, 1859)
- Polygyra avara Say, 1818
- Polygyra cereolus (Megerle von Muhlfeld, 1816)
- Polygyra chisosensis (Pilsbry, 1936)
- Polygyra delecta Hubricht, 1976
- Polygyra deltoidea (Simpson, 1889)
- Polygyra dorfueilliana (I. Lea, 1838)
- Polygyra fastigiata (Say, 1829)
- Polygyra gracilis Hubricht, 1961
- Polygyra hausmani Jackson, 1948
- Polygyra hippocrepis (Pfeiffer, 1848)
- Polygyra jacksoni (Bland, 1866)
- Polygyra leporina (Gould, 1848)
- Polygyra mooreana (W. G. Binney, 1858)
- Polygyra peninsulae Pilsbry, 1940
- Polygyra peregrina (Rehder, 1832)
- Polygyra plana (Dunker, 1843)
- Polygyra plicata (Say, 1821)
- Polygyra polita Pilsbry and Hinkley, 1907
- Polygyra postelliana (Bland, 1859)
- Polygyra pustula (Say, 1821)
- Polygyra pustuloides (Bland, 1858)
- Polygyra septemvolva Say, 1818
- Polygyra simpsoni (Pilsbry and Ferriss, 1907)
- Polygyra subclausa Pilsbry, 1940
- Polygyra texasiana (Moricand, 1833)
- Polygyra troostiana (I. Lea, 1839)
- Polygyra uvulifera (Shuttleworth, 1852)
- Polygyrella polygyrella (Bland and J. G. Cooper, 1861)
- Polygyriscus virginianus (P. R. Burch, 1947)
- Polygyroidea harfordiana (J. G. Cooper, 1870)
- Polymesoda caroliniana (Bosc, 1801)
- Polymesoda maritima (d'Orbigny, 1842)
- Polyschides agassizii (Dall, 1881)
- Polyschides californicus (Pilsbry and Sharp, 1898)
- Polyschides carolinensis (Bush, 1885)
- Polyschides elongatus (J. B. Henderson, 1920)
- Polyschides grandis (A. E. Verrill, 1884)
- Polyschides greenlawi (Dall, 1889)
- Polyschides miamiensis (J. B. Henderson, 1920)
- Polyschides pandionis (A. E. Verrill and S. Smith, 1880)
- Polyschides parvus (J. B. Henderson, 1920)
- Polyschides quadridentatus (Dall, 1881)
- Polyschides rushii (Pilsbry and Sharp, 1898)
- Polyschides spectabilis (A. E. Verrill, 1885)
- Polyschides tetraschistus (Watson, 1879)
- Polyschides tetrodon (Pilsbry and Sharp, 1898)
- Polyschides tolmiei (Dall, 1897)
- Polyschides watsoni (Dall, 1881)
- Polystira albida (G. Perry, 1811)
- Polystira florencae Bartsch, 1934
- Polystira sunderlandi Petuch, 1987
- Polystira tellea (Dall, 1889)
- Polystira vibex (Dall, 1889)
- Pomacea bridgesii (Reeve, 1856)
- Pomacea canaliculata (Lamarck, 1822)
- Pomacea haustrum (Reeve, 1858)
- Pomacea paludosa (Say, 1829)
- Pomacea urceus (Muller, 1774)
- Pomatiopsis binneyi Tryon, 1863
- Pomatiopsis californica Pilsbry, 1899
- Pomatiopsis chacei Pilsbry, 1937
- Pomatiopsis cincinnatiensis (Lea, 1840)
- Pomatiopsis hinkleyi Pilsbry, 1896
- Pomatiopsis lapidaria (Say, 1817)
- Popenaias berezai Inoue, Cummings, Tiemann, Miller, Johnson, Smith & Randklev, 2020
- Popenaias metallica (Say, 1831)
- Popenaias popeii (Lea, 1857)
- Popenaias semirasa (Pilsbry, 1910)
- Popenaias tehuantepecensis (Crosse & Fischer, 1893)
- Poromya albida Dall, 1886
- Poromya beringiana (Dall, 1916)
- Poromya elongata Dall, 1886
- Poromya granulata (Nyst and Westendorp, 1839)
- Poromya houbricki Bernard, 1989
- Poromya leonina (Dall, 1916)
- Poromya malespinae (Ridewood, 1903)
- Poromya neaeroides Sequenza, 1876
- Poromya rostrata Rehder, 1943
- Poromya tenuiconcha (Dall, 1913)
- Poromya tornata (Jeffreys, 1876)
- Poromya trosti Strong and Hertlein, 1937
- Portlandia aestuariorum (Mosevich, 1928)
- Portlandia arctica (J. E. Gray, 1824)
- Portlandia beringii
- Portlandia dalli Krause, 1885
- Portlandia fraterna (Verrill and Bush, 1898)
- Portlandia frigida (Torell, 1859)
- Portlandia glacialis (Gray, 1828)
- Portlandia inconspicua (Verrill and Bush, 1898)
- Portlandia inflata (Verrill and Bush, 1897)
- Portlandia intermedia (M. Sars, 1865)
- Portlandia iris (Verrill and Bush, 1897)
- Portlandia jeffreysi (Hildago, 1879)
- Portlandia lenticula (Moller, 1842)
- Portlandia lucida (Loven, 1846)
- Portlandia minuscula (Verrill and Bush, 1898)
- Portlandia sericea
- Portlandia subangulata (Verrill and Bush, 1898)
- Portlandia tamara
- Potamilus alatus (Say, 1817)
- Potamilus amphichaenus (Frierson, 1898)
- Potamilus capax (Green, 1832)
- Potamilus fragilis (Rafinesque, 1820)
- Potamilus inflatus (Lea, 1831)
- Potamilus leptodon (Rafinesque, 1820)
- Potamilus metnecktayi R. I. Johnson, 1998
- Potamilus ohiensis (Rafinesque, 1820)
- Potamilus purpuratus (Lamarck, 1819)
- Potamilus streckersoni Smith, Johnson, Inoue, Doyle & Randklev, 2019
- Potamocorbula amurensis (Schrenck, 1861)
- Potamopyrgus antipodarum (J. E. Gray, 1853)
- Potomida acarnanica (Kobelt, 1879)
- Potomida littoralis (Cuvier, 1798)
- Potomida semirugata (Lamarck, 1819)
- Powellsetia fallax
- Praticolella bakeri Vanatta, 1915
- Praticolella berlandieriana (Moricand, 1833)
- Praticolella candida Hubricht, 1983
- Praticolella griseola (Pfeiffer, 1841)
- Praticolella jejuna (Say, 1821)
- Praticolella lawae (J. Lewis, 1874)
- Praticolella mobiliana (I. Lea, 1841)
- Praticolella pachyloma (Menke, 1847)
- Praticolella taeniata Pilsbry, 1940
- Praticolella trimatris Hubricht, 1983
- Precuthona divae (Mcfarland, 1966)
- Precuthona peachi
- Pressidens exanthematicus (Küster, 1861)
- Pressodonta viridis (Rafinesque, 1820)
- Primovula solemi Cate, 1973
- Prionoglossa tetrabranchiata (Bonnevie, 1913)
- Prisodon obliquus Schumacher, 1817
- Prisodon syrmatophorus (Meuschen in Gronovius, 1781)
- Prisodontopsis aviculaeformis F. R. Woodward, 1991
- Prisodontopsis mweruensis (E. A. Smith, 1908)
- Pristes oblongus Carpenter, 1864
- Pristigloma alba Saunders and Allen, 1973
- Pristigloma minima (Sequenza, 1873)
- Pristigloma nitens (Jeffreys, 1876)
- Pristiloma arcticum (Lehnert, 1884)
- Pristiloma chersinella (Dall, 1886)
- Pristiloma gabrielinum (S. S. Berry, 1924)
- Pristiloma idahoense Pilsbry, 1902
- Pristiloma johnsoni (Dall, 1895)
- Pristiloma juniperum A. G. Smith, 1957
- Pristiloma lansingi (Bland, 1875)
- Pristiloma nicholsoni H. B. Baker, 1930
- Pristiloma orotis (S. S. Berry, 1930)
- Pristiloma pilsbryi Vanatta, 1899
- Pristiloma shepardae (Hemphill, 1892)
- Pristiloma stearnsi (Bland, 1875)
- Pristiloma subrupicola (Dall, 1877)
- Pristiloma wascoense (Hemphill, 1911)
- Pristinicola hemphilli (Pilsbry, 1890)
- Problacmaea apicina (Dall, 1879)
- Problacmaea moskalevi Golikov and Kussakin, 1972
- Problacmaea rubella (Fabricius, 1780)
- Problacmaea sybaritica (Dall, 1872)
- Probythinella emarginata (Kuster, 1852)
- Probythinella protera Pilsbry, 1953
- Prochaetoderma californicum Schwabl, 1963
- Prochaetoderma yongei
- Proctonotus mucroniferus (Adler and Hancock, 1844)
- Prohyriopsis stolata (Martens, 1900)
- Prolasmidonta heterodon (Lea, 1829)
- Promachoteuthis megaptera Hoyle, 1885
- Promenetus exacuous (Say, 1821)
- Promenetus umbilicatellus (Cockerell, 1887)
- Proneomenia acuminata Heath, 1918
- Proneomenia sluiteri
- Pronodularia japanensis (Lea, 1859)
- Propeamussium cancellatum (E. A. Smith, 1885)
- Propeamussium ceciliae Gregorio, 1884
- Propeamussium dalli (E. A. Smith, 1886)
- Propeamussium davidsoni (Dall, 1897)
- Propeamussium holmesii (Dall, 1886)
- Propeamussium lucidum (Jeffreys, 1873)
- Propeamussium malpelonium
- Propeamussium mendionale
- Propeamussium pourtalesianum (Dall, 1886)
- Propeamussium sayanum (Dall, 1886)
- Propeamussium squamigerum (E. A. Smith, 1886)
- Propeamussium thalassinum (Dall, 1886)
- Propebela alitakensis (Dall, 1919)
- Propebela angulosa (G. O. Sars, 1878)
- Propebela arctica (A. Adams, 1855)
- Propebela assimilis (G. O. Sars, 1878)
- Propebela concinnula (A. E. Verrill, 1882)
- Propebela exarata (Moller, 1842)
- Propebela fidicula (Gould, 1849)
- Propebela harpularia (Couthouy, 1838)
- Propebela mitrata (Dall, 1919)
- Propebela nobilis (Moller, 1842)
- Propebela pingelii (Moller, 1842)
- Propebela popovia (Dall, 1919)
- Propebela rassina (Dall, 1919)
- Propebela rugulata (Moller, 1866)
- Propebela scalaris (Moller, 1842)
- Propebela turricula (Montagu, 1803)
- Prophysaon andersoni (J. G. Cooper, 1872)
- Prophysaon boreale Pilsbry, 1948
- Prophysaon coeruleum Cockerell, 1890
- Prophysaon dubium Cockerell, 1890
- Prophysaon fasciatum Cockerell, 1890
- Prophysaon foliolatum (Gould, 1851)
- Prophysaon humile Cockerell, 1890
- Prophysaon obscurum Cockerell, 1890
- Prophysaon vanattae Pilsbry, 1948
- Propilidium ancyloides (Fairmaire, 1881)
- Propilidium elegans (Verrill, 1884)
- Propilidium exiguum (Thompson, 1844)
- Propilidium lissocona (Dall, 1927)
- Propilidium pertenue Jeffreys, 1882
- Propilidium reticulatum (A. E. Verrill, 1885)
- Propustularia surinamensis (G. Perry, 1811)
- Protatlanta souleyeti (E. A. Smith, 1888)
- Proterato gemma (Bavay, 1917)
- Protocuspidaria atlantica Allen and Morgan, 1981
- Protothaca asperrima (Sowerby, 1835)
- Protothaca granulata (Gmelin, 1791)
- Protothaca grata (Say, 1830)
- Protothaca laciniata (Carpenter, 1864)
- Protothaca metodon (Pilsbry and Lowe, 1932)
- Protothaca pectorina (Lamarck, 1818)
- Protothaca staminea (Conrad, 1837)
- Protothaca tenerrima (Carpenter, 1857)
- Protothaca thaca (Molina, 1782)
- Protunio messageri (Bavay & Dautzenberg, 1901)
- Prunum amabile (Redfield, 1852)
- Prunum apicinum (Menke, 1828)
- Prunum avenaceum (Deshayes, 1844)
- Prunum boreale (A. E. Verrill, 1884)
- Prunum carneum (Storer, 1837)
- Prunum cassis (Dall, 1889)
- Prunum evelynae (Bayer, 1943)
- Prunum guttatum (Dillwyn, 1817)
- Prunum nobilianum Bayer, 1943
- Prunum roosevelti (Bartsch and Rehder, 1939)
- Prunum roscidum (Redfield, 1860)
- Prunum succinea (Conrad, 1846)
- Prunum torticulum (Dall, 1881)
- Prunum virginianum Conrad, 1868
- Psammodoris thompsoni (Millen and Nybakken, 1987)
- Psammotreta aurora (Hanley, 1844)
- Psammotreta cognata (Pilsbry and Vanatta, 1902)
- Psammotreta intastriata (Say, 1827)
- Psammotreta obesa (Deshayes, 1855)
- Pseudacteon tenellus (Loven, 1846)
- Pseudanodonta complanata (Rossmässler, 1835)
- Pseudobaphia aurea (Heude, 1885)
- Pseudobaphia banggiangensis Bogan & Do, 2018
- Pseudobaphia biesiana (Heude, 1877)
- Pseudochama exogyra (Conrad, 1837)
- Pseudochama granti Strong, 1934
- Pseudochama inezae Bayer, 1943
- Pseudochama radians (Lamarck, 1819)
- Pseudococulina rugosoplicata Schepman, 1908
- Pseudocuneopsis capitata (Heude, 1874)
- Pseudocuneopsis sichuanensis Huang, Dai, Chen & Wu in Wu et al., 2022
- Pseudocuneopsis wuana Liu & Wu in Liu et al., 2023
- Pseudocuneopsis yangshuoensis Wu & Liu in Wu et al., 2023
- Pseudocyphoma gibbulum Cate, 1978
- Pseudocyphoma intermedium (G. B. Sowerby I, 1828)
- Pseudocyphoma pyrifera Cate, 1973
- Pseudocyphoma siphoni Cate, 1973
- Pseudocyphoma vanhyningi (M. Smith, 1940)
- Pseudodiala acuta (Carpenter, 1864)
- Pseudodon aeneolus Drouët & Chaper, 1892
- Pseudodon avae (Theobald, 1873)
- Pseudodon cambodjensis (Petit de la Saussaye, 1865)
- Pseudodon inoscularis (Gould, 1844)
- Pseudodon lenyanensis (Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020)
- Pseudodon mekongi (Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020)
- Pseudodon nicobaricus (Mörch, 1872)
- Pseudodon thomsoni Morlet, 1884
- Pseudodon vagulus (Fischer, 1891)
- Pseudodon vondembuschianus (Lea, 1840)
- Pseudodon walpolei (Hanley, 1871)
- Pseudodontoideus connasaugaensis (Lea, 1858)
- Pseudodontoideus subvexus (Conrad, 1834)
- Pseudodontopsis euphraticus (Bourguignat, 1852)
- Pseudoliomesus ooides (Middendorff, 1848)
- Pseudomalaxis centrifuga De Monterosata, 1890
- Pseudomalaxis clenchi Jaume and Borro, 1946
- Pseudomalaxis lamellifera Rehder, 1935
- Pseudomalaxis nobilis A. E. Verrill, 1885
- Pseudomalaxis zanclaeus (Philippi, 1844)
- Pseudomelatoma eburnea (Carpenter, 1865)
- Pseudomelatoma grippi (Dall, 1919)
- Pseudomelatoma penicillata (Carpenter, 1865)
- Pseudomelatoma sticta S. S. Berry, 1956
- Pseudomelatoma torosa (Carpenter, 1864)
- Pseudomiltha floridana (Conrad, 1833)
- Pseudomiltha tixierae Klein, 1967
- Pseudomulleria dalyi (E.A. Smith, 1898)
- Pseudopythina compressa
- Pseudopythina macandrewi (P. Fischer, 1867)
- Pseudopythina rugifera
- Pseudosabinella bakeri (Bartsch, 1917)
- Pseudoscilla decorata (de Folin, 1873)
- Pseudosimnia pyrifera Cate, 1973
- Pseudosimnia sphoni Cate, 1973
- Pseudosimnia vanhyningi (M. Smith, 1940)
- Pseudospatha tanganyicensis (E. A. Smith, 1880)
- Pseudostomatella coccinea (A. Adams, 1850)
- Pseudostomatella erythrocoma (Dall, 1889)
- Pseudostomatella papyraceus Gmelin, 1791
- Pseudosubulina cheatumi Pilsbry, 1950
- Pseudosuccinea columella (Say, 1817)
- Pseudotaranis hyperia (Dall, 1919)
- Pseudotaranis strongi (Arnold, 1903)
- Pseudotorinia architae (O. G. Costa, 1841)
- Pseudotorinia bullisi Bieler, Merrill and Boss, 1985
- Pseudotryonia adamantina (Taylor, 1987)
- Pseudotryonia alamosae (Taylor, 1987)
- Pseudotryonia brevissima (Pilsbry, 1890)
- Pseudotryonia grahamae F. G. Thompson, 2001
- Pseudovermis boadeni Salvini-plawen and Sterrer, 1868
- Pseudovermis papillifera Kowalevsky, 1901
- Pseudunio auricularius (Spengler, 1793)
- Pseudunio homsensis (Lea, 1865)
- Pseudunio marocanus (Pallary, 1918)
- Psilaxis krebsii (Morch, 1875)
- Psiloteredo dilitata (Stimpson, 1851)
- Psiloteredo megotara (Hanley, 1848)
- Psiloteredo nana Turton, 1822
- Psoronaias distincta (Crosse & Fischer, 1893)
- Psoronaias guatemalensis (Simpson, 1900)
- Psoronaias herrerae (Marshall, 1923)
- Psoronaias kuxensis Frierson, 1917
- Psoronaias martensi Frierson, 1927
- Psoronaias ostreata (Morelet, 1849)
- Psoronaias percompressa (Martens, 1887)
- Psoronaias profunda (Simpson, 1914)
- Psoronaias quadrata (Simpson, 1914)
- Psoronaias salinarum (Haas, 1929)
- Psoronaias semigranosa (von dem Busch in Philippi, 1843)
- Psoronaias usumasintae (Crosse & Fischer, 1892)
- Psychroteuthis glacialis Thiele, 1920
- Pteria colymbus (Roding, 1798)
- Pteria hirundo (Linnaeus, 1758)
- Pteria longisquamosa (Dunker, 1852)
- Pteria sterna (Gould, 1851)
- Pteria vitrea (Reeve, 1857)
- Pterochelus ariomus (Clench and Perez-farfonte, 1945)
- Pteroctopus eurycephala (Taki, 1964)
- Pteroctopus hoylei (Berry, 1909)
- Pteroctopus schmidti (Joubin, 1933)
- Pteroctopus tetracirrhus (Chiaie, 1830 in 1823-1831)
- Pteroctopus witjazi Akimushkin, 1963
- Pteromeris perplana (Conrad, 1841)
- Pteropurpura bequaerti (Clench and Perez Farfante, 1945)
- Pteropurpura festiva (Hinds, 1844)
- Pteropurpura macroptera (Deshayes, 1839)
- Pteropurpura trialata (G. B. Sowerby II, 1834)
- Pteropurpura vokesae Emerson, 1964
- Pterotrachea coronata Forskal, 1775
- Pterotrachea hippocampus Philippi, 1836
- Pterotrachea keraudrenii J. E. Gray, 1850
- Pterotrachea minuta
- Pterotrachea scutata Gegenbaur, 1855
- Pterotyphis triangularis (A. Adams, 1855)
- Pterygioteuthis gemmata Chun, 1908
- Pterygioteuthis giardi Fischer, 1896
- Pterygioteuthis microlampas Berry, 1913
- Pterynotus ariomus (Clench and Perez Farfante, 1945)
- Pterynotus macleani Emerson and D'attilio, 1968
- Pterynotus phaneus (Dall, 1889)
- Pterynotus phillipsi E. H. Vokes, 1966
- Pterynotus phyllopterus (Lamarck, 1822)
- Pterynotus pinniger (Broderip, 1833)
- Ptychatractus ligatus (Mighels and C. B. Adams, 1842)
- Ptychatractus occidentalis Stearns, 1873
- Ptychobranchus fasciolaris (Rafinesque, 1820)
- Ptychobranchus foremanianus (Lea, 1842)
- Ptychobranchus greenii (Conrad, 1834)
- Ptychobranchus jonesi (van der Schalie, 1934)
- Ptychobranchus occidentalis (Conrad, 1836)
- Ptychobranchus subtentus (Say, 1825)
- Ptychorhynchus denserugata (Haas, 1910)
- Ptychorhynchus liuovatus (He & Zhuang, 2013)
- Ptychorhynchus murinum (Heude, 1883)
- Ptychorhynchus pfisteri (Heude, 1874)
- Ptychorhynchus resupinatus (Martens, 1902)
- Ptychorhynchus schoedei (Haas, 1930)
- Ptychorhynchus schomburgianum (Heude, 1885)
- Ptychosalpinx globulus (Dall, 1889)
- Puberella intapurpurea (Conrad, 1849)
- Puberella pubera (Bory Saint-Vincent, 1827)
- Pugnus lachrimula (Gould, 1862)
- Pugnus serrei (Bavay, 1911)
- Pulsellum aberrans (Whiteaves, 1887)
- Pulsellum lobatum (G. B. Sowerby II, 1860)
- Pulsellum lofotense (M. Sars, 1865)
- Pulsellum occidentale (J. B. Henderson, 1920)
- Pulsellum salishorum E. Marshall, 1980
- Pulsellum verrilli (J. B. Henderson, 1920)
- Pulvinites adansoni De France, 1824
- Punctum blandianum Pilsbry, 1900
- Punctum californicum Pilsbry, 1898
- Punctum conspectum (Bland, 1865)
- Punctum hannai Roth, 1985
- Punctum minutissimum (I. Lea, 1841)
- Punctum randolphi (Dall, 1895)
- Punctum smithi Morrison, 1935
- Punctum vitreum (H. B. Baker, 1930)
- Puncturella abyssicola Verrill, 1885
- Puncturella acuminata Watson, 1883
- Puncturella agger Watson, 1883
- Puncturella antillana Farfante, 1947
- Puncturella asturiana (P. Fischer, 1882)
- Puncturella billsae Perex Farfante, 1947
- Puncturella borroi Farfante, 1947
- Puncturella brychia Watson, 1883
- Puncturella caryophylla Dall, 1914
- Puncturella circularis Dall, 1881
- Puncturella cooperi Carpenter, 1864
- Puncturella cucullata (Gould, 1846)
- Puncturella decorata I. M. Cowan and J. H. Mclean, 1968
- Puncturella erecta Dall, 1889
- Puncturella expansa (Dall, 1896)
- Puncturella galeata (Gould, 1846)
- Puncturella larva Dall, 1927
- Puncturella longifissa Dall, 1914
- Puncturella major Dall, 1891
- Puncturella multistriata Dall, 1914
- Puncturella noachina (Linnaeus, 1771)
- Puncturella oxia Watson, 1883
- Puncturella pacifica Cowan, 1969
- Puncturella pauper Dall, 1927
- Puncturella plecta Watson, 1883
- Puncturella profundi Jeffreys, 1877
- Puncturella punctocostata S. S. Berry, 1947
- Puncturella rothi McLean, 1984
- Puncturella sportella Watson, 1882
- Puncturella tenuicola Dall, 1927
- Puncturella trifolium Dall, 1881
- Pupa pudica
- Pupa tessellata
- Puperita pupa (Linnaeus, 1767)
- Pupilla blandi E. S. Morse, 1865
- Pupilla hebes (Ancey, 1881)
- Pupilla muscorum (Linnaeus, 1758)
- Pupilla sonorana (Sterki, 1899)
- Pupilla syngenes (Pilsbry, 1890)
- Pupisoma dioscoricola (C. B. Adams, 1845)
- Pupisoma macneilli (G. H. Clapp, 1918)
- Pupisoma minus Pilsbry, 1920
- Pupoides albilabris (C. B. Adams, 1841)
- Pupoides hordaceus (Gabb, 1866)
- Pupoides inornatus Vanatta, 1915
- Pupoides modicus (Gould, 1848)
- Purpura patula (Linnaeus, 1758)
- Pusillina inconspicua (Alder, 1844)
- Pusillina pseudoareolata (Waren, 1974)
- Pusillina sarsi (Loven, 1846)
- Pusillina turrita (Monterosato, 1890)
- Pustulosa archeri (Frierson, 1905)
- Pustulosa infucata (Conrad, 1834)
- Pustulosa kieneriana (Lea, 1852)
- Pustulosa kleiniana (Lea, 1852)
- Pustulosa necki (Burlakova, Karatayev, Lopes-Lima & Bogan in Burlakova et al., 2018)
- Pustulosa nodulata (Rafinesque, 1820)
- Pustulosa petrina (Gould, 1855)
- Pustulosa pustulosa (Lea, 1831)
- Pustulosa succissa (Lea, 1852)
- Pusula californiana (J. E. Gray, 1827)
- Pusula californica (G. B. Sowerby II, 1832)
- Pusula maltbiana (Schwengel and McGinty, 1942)
- Pusula padreserrai Cate, 1979
- Pycnodonte fischeri Dall, 1914
- Pycnodonte hyotis (Linnaeus, 1758)
- Pyganodon cataracta (Say, 1817)
- Pyganodon fragilis (Lamarck, 1819)
- Pyganodon gibbosa (Say, 1824)
- Pyganodon grandis (Say, 1829)
- Pyganodon lacustris (Lea, 1857)
- Pyramidella adamsi (Carpenter, 1864)
- Pyramidella bicolor
- Pyramidella camara
- Pyramidella candida Morch, 1875
- Pyramidella crassula Forbes, 1843
- Pyramidella crenulata (Holmes, 1860)
- Pyramidella dolabrata (Linnaeus, 1758)
- Pyramidella fusca
- Pyramidella lissa
- Pyramidella mazatlantica Dall and Bartsch, 1909
- Pyramidella mexicana Dall and Bartsch, 1909
- Pyramidella resticula (Dall, 1889)
- Pyramidella subdolabrata
- Pyramidella terebellum Muller, 1886
- Pyramidella unifasciata Forbes, 1843
- Pyramidella ventricosa Forbes, 1843
- Pyrgocythara balteata (Reeve, 1846)
- Pyrgocythara canoidissima (C. B. Adams, 1845)
- Pyrgocythara densestriata (C. B. Adams, 1850)
- Pyrgocythara dubia
- Pyrgocythara filosa Rehder, 1943
- Pyrgocythara hemphilli Bartsch and Rehder, 1939
- Pyrgocythara metria (Dall, 1903)
- Pyrgocythara plicosa (C. B. Adams, 1850)
- Pyrgophorus parvulus (Guilding, 1828)
- Pyrgophorus platyrachis F. G. Thompson, 1968
- Pyrgophorus spinosus (Call and Pilsbry, 1886)
- Pyrgospira obeliscus (Reeve, 1843)
- Pyrgospira ostrearum (Stearns, 1872)
- Pyrgospira tampaensis (Bartsch and Rehder, 1939)
- Pyrgulina edgarii Melvill, 1897
- Pyrgulina epentroma Melvill, 1897
- Pyrgulina maiae Hornung and Mermod, 1924
- Pyrgulina melvilli Dautz. et Fischer, 1906
- Pyrgulina oodes
- Pyrgulina purpaeformis Souverbie, 1865
- Pyrgulina ventricosa Horning and Mermod, 1925
- Pyrgulopsis aardahli Hershler, 1989
- Pyrgulopsis aloba Hershler, 1998
- Pyrgulopsis amargosae Hershler, 1989
- Pyrgulopsis anatina Hershler, 1998
- Pyrgulopsis anguina Hershler, 1998
- Pyrgulopsis archimedis S. S. Berry, 1947
- Pyrgulopsis arizonae (Taylor, 1987)
- Pyrgulopsis augustae Hershler, 1998
- Pyrgulopsis aurata Hershler, 1998
- Pyrgulopsis avernalis (Pilsbry, 1935)
- Pyrgulopsis bacchus Hershler, 1988
- Pyrgulopsis basiglans Hershler, 1998
- Pyrgulopsis bedfordensis Hershler and Gustafson, 2001
- Pyrgulopsis bernardina (Taylor, 1987)
- Pyrgulopsis bifurcata Hershler, 1998
- Pyrgulopsis blainica Hershler, Liu and Gustafson, 2008
- Pyrgulopsis breviloba Hershler, 1998
- Pyrgulopsis bruesi Hershler and Sada, 2000
- Pyrgulopsis bruneauensis Hershler, 1990
- Pyrgulopsis bryantwalkeri Hershler, 1994
- Pyrgulopsis californiensis (Gregg and Taylor, 1965)
- Pyrgulopsis carinata Hershler, 1998
- Pyrgulopsis carinifera (Pilsbry, 1935)
- Pyrgulopsis castaicensis Hershler and Liu, 2010
- Pyrgulopsis chamberlini Hershler, 1998
- Pyrgulopsis chupaderae Taylor, 1987
- Pyrgulopsis cinerana Hershler, Frest, Liu and Johannes, 2003
- Pyrgulopsis coloradensis Hershler, 1998
- Pyrgulopsis conica Hershler, 1988
- Pyrgulopsis cruciglans Hershler, 1998
- Pyrgulopsis crystalis Hershler and Sada, 1987
- Pyrgulopsis cybele Hershler and Liu, 2012
- Pyrgulopsis davisi (Taylor, 1987)
- Pyrgulopsis deaconi Hershler, 1998
- Pyrgulopsis deserta (Pilsbry, 1916)
- Pyrgulopsis diablensis Hershler, 1995
- Pyrgulopsis dixiensis Hershler, 1998
- Pyrgulopsis eremica Hershler, 1995
- Pyrgulopsis erythropoma (Pilsbry, 1899)
- Pyrgulopsis fairbanksensis Hershler and Sada, 1987
- Pyrgulopsis falciglans Hershler, Frest, Liu and Johannes, 2003
- Pyrgulopsis fausta Hershler, 1998
- Pyrgulopsis fresti Hershler and Liu, 2009
- Pyrgulopsis fusca Hershler, 1998
- Pyrgulopsis gibba Hershler, 1995
- Pyrgulopsis gilae (Taylor, 1987)
- Pyrgulopsis giuliani Hershler and Pratt, 1990
- Pyrgulopsis glandulosa Hershler, 1988
- Pyrgulopsis gracilis Hershler, 1998
- Pyrgulopsis greggi Hershler, 1995
- Pyrgulopsis hamlinensis Hershler, 1998
- Pyrgulopsis hovinghi Hershler, 1998
- Pyrgulopsis hualapaiensis Hershler, Liu and Stevens, 2016
- Pyrgulopsis hubbsi Hershler, 1998
- Pyrgulopsis humboldtensis Hershler, 1998
- Pyrgulopsis ignota Hershler, Liu and Lang, 2010
- Pyrgulopsis imperialis Hershler, 1998
- Pyrgulopsis inopinata Hershler, 1998
- Pyrgulopsis intermedia (Tryon, 1865)
- Pyrgulopsis isolata Hershler and Sada, 1987
- Pyrgulopsis kolobensis (Taylor, 1987)
- Pyrgulopsis landyei Hershler, 1998
- Pyrgulopsis lasseni Hershler, Frest, Liu and Johannes, 2003
- Pyrgulopsis lata Hershler, 1998
- Pyrgulopsis lentiglans Hershler, 1998
- Pyrgulopsis leporina Hershler, 1998
- Pyrgulopsis limaria Hershler, 1998
- Pyrgulopsis lindae Hershler, Liu, Babbitt, Kellogg and Howard, 2016
- Pyrgulopsis lindahlae Hershler, Liu, Forsythe, Hovingh and Wheeler, 2017
- Pyrgulopsis lockensis Hershler, 1998
- Pyrgulopsis longae Hershler, 1995
- Pyrgulopsis longiglans Hershler, 1998
- Pyrgulopsis longinqua (Gould, 1855)
- Pyrgulopsis marcida Hershler, 1998
- Pyrgulopsis marilynae Hershler, Ratcliffe, Liu, Lang and Hay, 2014
- Pyrgulopsis merriami (Pilsbry and Beecher, 1892)
- Pyrgulopsis metcalfi (Taylor, 1987)
- Pyrgulopsis micrococcus (Pilsbry, 1893)
- Pyrgulopsis militaris Hershler, 1998
- Pyrgulopsis millenaria Hershler, 1998
- Pyrgulopsis milleri Hershler and Liu, 2010
- Pyrgulopsis montana Hershler, 1998
- Pyrgulopsis montezumensis Hershler, 1988
- Pyrgulopsis morrisoni Hershler, 1988
- Pyrgulopsis nanus Hershler and Sada, 1987
- Pyrgulopsis neomexicana (Pilsbry, 1916)
- Pyrgulopsis neritella Hershler, 1998
- Pyrgulopsis nevadensis (Stearns, 1883)
- Pyrgulopsis nonaria Hershler, 1998
- Pyrgulopsis notidicola Hershler, 1998
- Pyrgulopsis nuwuvi Hershler, Liu, Forsythe, Hovingh and Wheeler, 2017
- Pyrgulopsis ojaiensis Hershler, Liu, Babbitt, Kellogg and Howard, 2016
- Pyrgulopsis orbiculata Hershler, 1998
- Pyrgulopsis owensensis Hershler, 1989
- Pyrgulopsis owyheensis Hershler and Liu, 2009
- Pyrgulopsis papillata Hershler, 1998
- Pyrgulopsis pecosensis (Taylor, 1987)
- Pyrgulopsis peculiaris Hershler, 1998
- Pyrgulopsis pellita Hershler, 1998
- Pyrgulopsis perturbata Hershler, 1989
- Pyrgulopsis pictilis Hershler, 1998
- Pyrgulopsis pilsbryana (J. L. Baily and R. I. Baily, 1952)
- Pyrgulopsis pisteri Hershler and Sada, 1987
- Pyrgulopsis planulata Hershler, 1998
- Pyrgulopsis plicata Hershler, 1998
- Pyrgulopsis robusta (Walker, 1908)
- Pyrgulopsis roswellensis (Taylor, 1987)
- Pyrgulopsis ruinosa Hershler, 1998
- Pyrgulopsis rupinicola Hershler, Frest, Liu and Johannes, 2003
- Pyrgulopsis sadai Hershler, 1998
- Pyrgulopsis santaclarensis Hershler, Liu, Forsythe, Hovingh and Wheeler, 2017
- Pyrgulopsis sathos Hershler, 1998
- Pyrgulopsis saxatilis Hershler, 1998
- Pyrgulopsis serrata Hershler, 1998
- Pyrgulopsis similis Hershler, Ratcliffe, Liu, Lang and Hay, 2014
- Pyrgulopsis simplex Hershler, 1988
- Pyrgulopsis sola Hershler, 1988
- Pyrgulopsis stearnsiana (Pilsbry, 1899)
- Pyrgulopsis sterilis Hershler, 1998
- Pyrgulopsis sublata Hershler, 1998
- Pyrgulopsis sulcata Hershler, 1998
- Pyrgulopsis taylori Hershler, 1995
- Pyrgulopsis texana (Pilsbry, 1935)
- Pyrgulopsis thermalis (Taylor, 1987)
- Pyrgulopsis thompsoni Hershler, 1988
- Pyrgulopsis torrida Hershler, Liu, Babbitt, Kellogg and Howard, 2016
- Pyrgulopsis transversa Hershler, 1998
- Pyrgulopsis trivialis (Taylor, 1987)
- Pyrgulopsis turbatrix Hershler, 1998
- Pyrgulopsis umbilicata Hershler, 1998
- Pyrgulopsis variegata Hershler, 1998
- Pyrgulopsis varneri Heshler, Liu and Sada, 2007
- Pyrgulopsis ventricosa Hershler, 1995
- Pyrgulopsis villacampae Hershler, 1998
- Pyrgulopsis vinyardi Hershler, 1998
- Pyrgulopsis wongi Hershler, 1989
- Pyroteuthis addolux Young, 1972
- Pyroteuthis margaritifera (Rüppell, 1844)
- Pyroteuthis serrata Riddell, 1985
- Pyrulofusus deformis (Reeve, 1847)
- Pyrulofusus dexius (Dall, 1907)
- Pyrulofusus harpa (Mörch, 1857)
- Pyrulofusus melonis (Dall, 1891)
- Pyrunculus caelatus (Bush, 1885)
- Pyrunculus conulus (Deshayes, 1832)
- Pyrunculus ovatus (Jeffreys, 1871)
- Pythinella cuneata (A. E. Verrill and Bush, 1898)
- Quadrula couchiana (Lea, 1860)
- Quadrula fragosa (Conrad, 1836)
- Quadrula nobilis (Conrad, 1854)
- Quadrula quadrula (Rafinesque, 1820)
- Quadrula verrucosa (Rafinesque, 1820)
- Quasicorambe pacifica (MacFarland and O'Donoghue, 1929)
- Quidnipagus palatam (Iredale, 1929)
- Quoyula kalafuti Petuch, 1987
- Rabdotus alternatus (Say, 1830)
- Rabdotus dealbatus (Say, 1821)
- Rabdotus mooreanus (Pfeiffer, 1868)
- Rabdotus nigromontanus (Dall, 1897)
- Rabdotus pilsbryi (Ferriss, 1925)
- Radiatula chaudhurii (Preston, 1912)
- Radiatula chindwinensis Bolotov, Konopleva, Vikhrev, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova, Gofarov et al., 2019
- Radiatula crispisulcata (Benson, 1862)
- Radiatula kachinensis Bolotov, Konopleva, Chan, Lunn, Win, Gofarov, Kondakov, Tomilova & Vikhrev, 2022
- Radiatula mouhoti Vikhrev, Bolotov & Konopleva in Bolotov et al., 2017
- Radiatula myitkyinae (Prashad, 1930)
- Radiatula myitthanensis Bolotov, Konopleva, Vikhrev, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova, Gofarov et al., 2019
- Radiocentrum avalonense (Hemphill, 1905)
- Radiocentrum chiricahuanum (Pilsbry, 1905)
- Radiocentrum clappi (Ferriss, 1904)
- Radiocentrum ferrissi (Pilsbry, 1915)
- Radiocentrum hachetanum (Pilsbry, 1915)
- Radiodiscus abietum H. B. Baker, 1930
- Radiodiscus millecostatus Pilsbry and Ferriss, 1906
- Radix auricularia (Linnaeus, 1758)
- Radix peregra (Müller, 1774)
- Raeta plicatella (Lamarck, 1818)
- Raeta undulata (Gould, 1851)
- Rangia cuneata (G. B. Sowerby I, 1831)
- Rangia flexuosa (Conrad, 1840)
- Raphitoma boothii (Brown, 1839)
- Raphitoma echinata (Brocchi, 1814)
- Raphitoma linearis (Montagu, 1803)
- Raphitoma purpurea (Montagu, 1803)
- Recluzia rollandiana Petit de la Saussaye, 1853
- Rectidens sumatrensis (Dunker, 1852)
- Reginaia apalachicola (Williams & Fradkin, 1999)
- Reginaia ebenus (Lea, 1831)
- Reginaia rotulata (B. H. Wright, 1899)
- Reticulatus elvae (Walker, 1924)
- Reticulatus reticulatus (Simpson, 1900)
- Retilaskeya bicolor (C. B. Adams, 1845)
- Retimohnia caelata (Verrill and Smith, 1880)
- Retimohnia carolinensis (Verrill, 1884)
- Retimohnia clementinus (Dall, 1919)
- Retimohnia robusta (Dall, 1913)
- Retimohnia vernalis (Dall, 1913)
- Retusa alba
- Retusa mayoi (Dall, 1889)
- Retusa montereyensis A. G. Smith and M. Gordon, 1948
- Retusa obtusa (Montagu, 1803)
- Retusa ovata
- Retusa semen (Reeve, 1855)
- Retusa sulcata (d'Orbigny, 1841)
- Retusa truncatula
- Retusa umbilicata (Montagu, 1803)
- Retusa xystrum Dall, 1919
- Rhabdus dalli (Pilsbry and Sharp, 1897)
- Rhabdus rectius (Carpenter, 1865)
- Rhabdus watsoni (Sharp and Pilsbry, 1897)
- Rhamphidonta retifera (Dall, 1899)
- Rhapinema dacryon F. G. Thompson, 1969
- Rhinodiaphana ventricosa (Jeffreys, 1865)
- Rhodacmea cahawbensis (Walker, 1917)
- Rhodacmea elatior (Anthony, 1855)
- Rhodacmea filosa (Conrad, 1834)
- Rhodacmea hinkleyi (Walker, 1908)
- Rhodope veranyi
- Rhodopetala rosea (Dall, 1872)
- Rhodopetoma diaulax (Dall, 1908)
- Rhodopetoma renaudi (Arnold, 1903)
- Rhodopetoma rhodope (Dall, 1919)
- Rhombinella laevigata (Linnaeus, 1758)
- Rhomboidella prideaux (Leach, 1915)
- Rhombuniopsis fultoni Moskvicheva & Starobogatov, 1973
- Rhombuniopsis superstes (Neumayr, 1899)
- Rhombuniopsis tauriformis (Fulton, 1906)
- Rhopalomenia aglaopheniae (Kowalevsky and Marion, 1887)
- Rictaxis painei (Dall, 1903)
- Rictaxis punctocaelatus (Carpenter, 1864)
- Rictaxis punctostriatus (C. B. Adams, 1840)
- Rimosodaphnella morra (Dall, 1881)
- Rimosodaphnella semicolon (S. V. Wood, 1842)
- Rimula aequisculpta Dall, 1927
- Rimula californiana S. S. Berry, 1964
- Rimula dorriae Perez Farfante, 1947
- Rimula frenulata (Dall, 1889)
- Rimula mexicana S. S. Berry. 1969
- Rimula pycnonema Pilsbry, 1943
- Ringicula nitida A. E. Verrill, 1873
- Ringicula peracuta
- Ringicula ringens
- Ringicula semistriata D'Orbigny, 1842
- Rissoa bermudezi Aguayo and Rehder, 1936
- Rissoa curta Dall, 1927
- Rissoa guerini
- Rissoa inconspicua
- Rissoa interrupta (J. Adams, 1800)
- Rissoa labiosa (Montagu, 1803)
- Rissoa lepida Woodring, 1928
- Rissoa lilacina Récluz, 1843
- Rissoa listeri Dall, 1927
- Rissoa membranacea
- Rissoa parva
- Rissoa pompholyx Dall, 1927
- Rissoa pyrrhais Watson, 1885
- Rissoa syngenes Verrill, 1884
- Rissoa toroensis Olsson and McGinty, 1958
- Rissoa xanthias Watson, 1885
- Rissoella alaskensis (Bartsch, 1907)
- Rissoella caribaea Rehder, 1943
- Rissoella diaphana
- Rissoella hertleini A. G. Smith and M. Gordon, 1948
- Rissoina barthelowi Bartsch, 1915
- Rissoina basilirata Baker, Hanna, and Strong, 1930
- Rissoina bryerea (Montagu, 1803)
- Rissoina burragei Bartsch, 1915
- Rissoina californica Bartsch, 1915
- Rissoina cancellata Philippi, 1847
- Rissoina catesbyana Orbigny, 1842
- Rissoina cerrosensis Bartsch, 1915
- Rissoina chesnelii (Michaud, 1830)
- Rissoina decussata (Montagu, 1803)
- Rissoina dyscrita Faber, 1990
- Rissoina ephamilla
- Rissoina expansa Carpenter, 1865
- Rissoina firmata (C. B. Adams, 1852)
- Rissoina fischeri Desjardin, 1949
- Rissoina hannai A. G. Smith and Gordon, 1948
- Rissoina histia Bartsch, 1915
- Rissoina keenae A. G. Smith and M. Gordon, 1948
- Rissoina lapazana Bartsch, 1915
- Rissoina mayori Dall, 1927
- Rissoina melanelloides Baker, Hanna, and Strong, 1930
- Rissoina mexicana Bartsch, 1915
- Rissoina miltozona
- Rissoina multicostata (C. B. Adams, 1850)
- Rissoina nereina Bartsch, 1915
- Rissoina newcombei Dall, 1897
- Rissoina peninsularis Bartsch, 1915
- Rissoina porteri Baker, Hanna, and Strong, 1930
- Rissoina pulchella
- Rissoina sagraiana D'Orbigny, 1842
- Rissoina shaferi Mcginty, 1962
- Rissoina stricta Menke, 1850
- Rissoina striosa (C. B. Adams, 1850)
- Rissoina triticea
- Rissoina turricula
- Rissopsetia hummelincki Faber, 1984
- Robsonella fontaniana (D'Orbigny, 1834 in 1834-1847)
- Robsonella huttoni Benham, 1943
- Rochefortia compressa Dall, 1913
- Rochefortia grippi Dall, 1912
- Rochefortia tumida (Carpenter, 1864)
- Rondeletiola minor (Naef, 1912)
- Roperia poulsoni (Carpenter, 1864)
- Rossia brachyura Verrill, 1883
- Rossia bullisi Voss, 1956
- Rossia glaucopis Loven, 1845
- Rossia macrosoma (Chiaie, 1830 in 1823-1831)
- Rossia megaptera Verrill, 1881 in 1880-1881
- Rossia moelleri Steenstrup, 1856
- Rossia mollicella Sasaki, 1920
- Rossia pacifica Berry, 1911
- Rossia palpebrosa Owen, 1834
- Rossia tortugaensis Voss, 1956
- Rostanga pulchra MacFarland, 1905
- Rostanga rubra (Risso, 1818)
- Rothelix cuyamacensis (Pilsbry, 1895)
- Rothelix lowei (Bartsch, 1918)
- Rothelix rhodophila (Reeder and W. B. Miller, 1987)
- Rothelix warnerfontis (Reeder and W. B. Miller, 1988)
- Roxania semilaevis (Sequenza, 1880)
- Roxania utriculus (Brocchi, 1814)
- Rubellatoma diomedea Bartsch and Rehder, 1939
- Rubellatoma rubella (Kurtz and Stimpson, 1851)
- Rumina decollata (Linnaeus, 1758)
- Runcina coronata (Quatrefages, 1844)
- Runcina divae (Ev. Marcus and Er. Marcus, 1963)
- Runcina ferruginea Kress, 1977
- Runcina macfarlandi Gosliner, 1991
- Rupellaria cancellata (A. E. Verrill, 1885)
- Rupellaria denticulata (Sowerby, 1834)
- Rupellaria tellimyalis (Carpenter, 1864)
- Sabia conica (Schumacher, 1817)
- Sabinella bakeri Bartsch, 1917
- Sabinella troglodytes (Thiele, 1925)
- Saccharoturris monocingulata (Dall, 1889)
- Saccostrea cuccullata (Born, 1778)
- Sagittunio aldermani Watters, 2018
- Sagittunio nasutus (Say, 1817)
- Sagittunio subrostratus (Say, 1831)
- Sagittunio vaughanianus (Lea, 1838)
- Sakuraeolis enosimensis (Baba, 1930)
- Sandalops melancholicus Chun, 1906
- Sanguinolaria cruenta (Lightfoot, 1786)
- Sanguinolaria sanguinolenta (Gmelin, 1791)
- Sansonia tuberculata (Watson, 1886)
- Sarasinula plebeia (P. Fischer, 1868)
- Sarasomia plebeia (P. Fischer, 1898)
- Sassia apenninica (Sassi, 1827)
- Saturnia corpulenta (Dall, 1881)
- Saturnia subovata Verrill and Bush, 1897
- Saxicavella jeffreysi Winkworth, 1930
- Saxicavella nybakkeni Scott, 1994
- Saxicavella pacifica Dall, 1916
- Saxidomus gigantea (Deshayes, 1839)
- Saxidomus nuttalli Conrad, 1837
- Sayella chesapeakea Morrison, 1939
- Sayella crosseana (Dall, 1885)
- Sayella fusca (C. B. Adams, 1839)
- Sayella hemphili (Dall, 1889)
- Sayella hemphillii (Dall, 1884)
- Sayella livida Rehder, 1935
- Sayella unifasciata
- Scabiellus songkramensis (Kongim & Panha in Kongim et al., 2015)
- Scabies anceps (Deshayes in Deshayes & Jullien, 1876)
- Scabies crispata (Gould, 1843)
- Scabies humilis (Lea, 1856)
- Scabies mandarinus (Morelet, 1864)
- Scabies nucleus (Lea, 1856)
- Scabies phaselus (Lea, 1856)
- Scabies pilata (Lea, 1866)
- Scabies scobinatus (Lea, 1856)
- Scabrotrophon cerritensis (Arnold, 1903)
- Scabrotrophon clarki J. H. McLean, 1996
- Scabrotrophon densicostatus (Golikov, 1985)
- Scabrotrophon grovesi J. H. McLean, 1996
- Scabrotrophon lasius (Dall, 1919)
- Scabrotrophon maltzani (Kobelt and Kuster, 1878)
- Scabrotrophon rossica (Egorov, 1993)
- Scabrotrophon scarlatoi (Golikov and Sirenko, 1992)
- Scabrotrophon scitulus (Dall, 1891)
- Scaeurgus patagiatus Berry, 1913
- Scaeurgus unicirrhus (Chiaie, 1839-41 in Férussac and D'Orbigny, 1834-1848)
- Scalenostoma babylonia Bartsch, 1912
- Scaliola gracilis
- Scaphander bathymorphila Dall, 1881
- Scaphander darius Marcus and Marcus, 1967
- Scaphander lignarius (Linnaeus, 1767)
- Scaphander pilsbryi McGinty, 1955
- Scaphander punctostriatus (Mighels and C. B. Adams, 1842)
- Scaphander watsoni Dall, 1881
- Scaphander willetti Dall, 1919
- Scaphella aguayoi (Clench, 1940)
- Scaphella dohrni (G. B. Sowerby III, 1903)
- Scaphella dubia (Broderip, 1827)
- Scaphella evelina F. M. Bayer, 1971
- Scaphella gouldiana (Dall, 1887)
- Scaphella junonia (Lamarck, 1804)
- Scaphella piratica (Clench and Aguayo, 1940)
- Scaphella torrei (Pilsbry, 1937)
- Scelidotoma bella (Gabb, 1865)
- Schepmania nieuwenhuisi (Schepman, 1898)
- Schepmania parcesculpta (Martens, 1903)
- Schistodesmus lampreyanus (Baird & Adams, 1867)
- Schistodesmus spinosus (Simpson, 1900)
- Schizobrachium polycotylum Meisenheimer, 1903
- Schizoplax brandtii (Middendorff, 1847)
- Schwartziella bakeri (Bartsch, 1902)
- Schwartziella bouryi (Desjardin, 1949)
- Schwartziella bryerea (Montagu, 1803)
- Schwartziella catesbyana (d'Orbigny, 1842)
- Schwartziella cleo (Bartsch, 1915)
- Schwartziella coronadoensis (Bartsch, 1915)
- Schwartziella dalli (Bartsch, 1915)
- Schwartziella fischeri Desjardin, 1949
- Schwartziella hannai (A. G. Smith and M. Gordon, 1948)
- Scintillona bellerophon O'Foighil and Gibson, 1984
- Scissilabra dalli Bartsch, 1907
- Scissurella alta Watson, 1886
- Scissurella caliana Dall, 1919
- Scissurella cingulata O. G. Costa, 1861
- Scissurella coronata Watson, 1866
- Scissurella lacuniformis Watson, 1886
- Scissurella laevigata Orbigny, 1824
- Scissurella lamellata (A. Adams, 1862)
- Scissurella lyra S. S. Berry, 1947
- Scissurella proxima Dall, 1927
- Scissurella soyoae (Habe, 1951)
- Scissurella tabulata Watson, 1886
- Sclerodoris tanya (Ev. Marcus, 1971)
- Sconsia nephele F. M. Bayer, 1971
- Sconsia striata (Lamarck, 1816)
- Scrobicularia plana
- Scurria mesoleuca (Menke, 1851)
- Scutopus megaradulatus Salvini-Plawen, 1972
- Scutopus robustus Salvini-plawen, 1970
- Scutopus ventrolineatus Salvini-Plawen, 1968
- Scyllaea pelagica Linnaeus, 1758
- Searlesia modesta (Gould, 1860)
- Securicauda hermani Leonard, Chichester, Richart and Young, 2011
- Seguenzia caliana Dall, 1919
- Seguenzia carinata Jeffreys, 1876
- Seguenzia certoma Dall, 1919
- Seguenzia cervola Dall, 1919
- Seguenzia elegans Jeffreys, 1876
- Seguenzia eritima Verrill, 1884
- Seguenzia floridana Dall, 1927
- Seguenzia formosa Jeffreys, 1876
- Seguenzia giovia Dall, 1919
- Seguenzia hapala Woodring, 1928
- Seguenzia ionica Watson, 1879
- Seguenzia monocingulata Sequenza, 1876
- Seguenzia rushi Dall, 1927
- Seguenzia trispinosa Watson, 1888
- Seila adamsi (H. C. Lea, 1845)
- Seila adamsii (H. C. Lea, 1845)
- Seila montereyensis Bartsch, 1907
- Selenoteuthis scintillans Voss, 1959
- Semele bellastriata (Conrad, 1837)
- Semele decisa (Conrad, 1837)
- Semele incongrua Carpenter, 1864
- Semele proficua (Pulteney, 1799)
- Semele pulchra (G. B. Sowerby I, 1832)
- Semele purpurascens (Gmelin, 1791)
- Semele rubicola Dall, 1915
- Semele rubropicta Dall, 1871
- Semele rupicola Dall, 1915
- Semele venusta (Reeve, 1853)
- Semelina nuculoides (Conrad, 1841)
- Semierycina nitida (Turton, 1822)
- Semierycina tenera (Jeffreys, 1881)
- Seminella varia
- Semirossia equalis (Voss, 1950)
- Semirossia patagonica (Smith, 1881)
- Semirossia tenera (Verrill, 1880)
- Sepia aculeata Van Hasselt, 1835 in Férussac and D'Orbigny, 1834-1848
- Sepia acuminata Smith, 1916
- Sepia adami Roeleveld, 1972
- Sepia andreana Steenstrup, 1875
- Sepia angulata Roeleveld, 1972
- Sepia apama Gray, 1849
- Sepia appellofi Wülker, 1910
- Sepia arabica Massy, 1916
- Sepia aureomaculata Okutani and Horikawa, 1987
- Sepia australis Quoy and Gaimard, 1832
- Sepia bandensis Adam, 1939
- Sepia bartletti (Iredale, 1954)
- Sepia bathyalis Khromov, Nikitina and Nesis, 1991
- Sepia baxteri (Iredale, 1940)
- Sepia bertheloti D'Orbigny, 1835 in Férussac and D'Orbigny, 1834-1848
- Sepia braggi Verco, 1907
- Sepia brevimana Steenstrup, 1875
- Sepia burnupi Hoyle, 1904
- Sepia carinata Sasaki, 1920
- Sepia chirotrema Berry, 1918
- Sepia confusa Smith, 1916
- Sepia cottoni Adam, 1979
- Sepia cultrata Hoyle, 1885
- Sepia dannevigi Berry, 1918
- Sepia dollfusi Adam, 1941
- Sepia dubia Adam and Rees, 1966
- Sepia elegans Blainville, 1827
- Sepia elliptica Hoyle, 1885
- Sepia elobyana Adam, 1941
- Sepia elongata D'Orbigny, 1839-1842 in Férussac and D'Orbigny, 1834-1848
- Sepia erostrata Sasaki, 1929
- Sepia esculenta Hoyle, 1885
- Sepia faurei Roeleveld, 1972
- Sepia foliopeza Okutani and Tagawa, 1987
- Sepia gibba Ehrenberg, 1831
- Sepia hedleyi Berry, 1918
- Sepia hieronis (Robson, 1924)
- Sepia hierredda Rang, 1835 in Férussac and D'Orbigny, 1834-1848
- Sepia incerta Smith, 1916
- Sepia insignis Smith, 1916
- Sepia irvingi Meyer, 1909
- Sepia ivanovi Khromov, 1982
- Sepia joubini Massy, 1927
- Sepia kiensis Hoyle, 1885
- Sepia kobiensis Hoyle, 1885
- Sepia latimanus Quoy and Gaimard, 1832
- Sepia limata (Iredale, 1926)
- Sepia longipes Sasaki, 1914
- Sepia lorigera Wülker, 1910
- Sepia lycidas Gray, 1849
- Sepia madokai Adam, 1939
- Sepia mascarensis Filippova and Khromov, 1991
- Sepia mestus Gray, 1849
- Sepia mira (Cotton, 1932)
- Sepia mirabilis Khromov, 1988
- Sepia murrayi Adam and Rees, 1966
- Sepia novaehollandiae Hoyle, 1909
- Sepia officinalis Linnaeus, 1758
- Sepia omani Adam and Rees, 1966
- Sepia opipara (Iredale, 1926)
- Sepia orbignyana Férussac in D'Orbigny, 1826
- Sepia papillata Quoy and Gaimard, 1832
- Sepia papuensis Hoyle, 1885
- Sepia pardalis Sasaki, 1914
- Sepia peterseni Appellöf, 1886
- Sepia pharaonis Ehrenberg, 1831
- Sepia plana Lu and Reid, 1997
- Sepia plangon Gray, 1849
- Sepia plathyconchalis Filippova and Khromov, 1991
- Sepia prashadi Winckworth, 1936
- Sepia pulchra Roeleveld and Liltved, 1985
- Sepia recurvirostra Steenstrup, 1875
- Sepia reesi Adam, 1979
- Sepia rex (Iredale, 1926)
- Sepia rhoda (Iredale, 1954)
- Sepia robsoni (Massy, 1927)
- Sepia rozella (Iredale, 1926)
- Sepia savignyi Blainville, 1827
- Sepia saya Khromov, Nikitina and Nesis, 1991
- Sepia senta Lu and Reid, 1997
- Sepia sewelli Adam and Rees, 1966
- Sepia simoniana Thiele, 1920
- Sepia smithi Hoyle, 1885
- Sepia sokotriensis Khromov, 1988
- Sepia stellifera Homenko and Khromov, 1984
- Sepia subtenuipes Okutani and Horikawa, 1987
- Sepia sulcata Hoyle, 1885
- Sepia tala Khromov, Nikitina and Nesis, 1991
- Sepia tenuipes Sasaki, 1929
- Sepia thurstoni Adam and Rees, 1966
- Sepia tokioensis Ortmann, 1888
- Sepia trygonina (Rochebrune, 1884)
- Sepia tuberculata Lamarck, 1798
- Sepia typica (Steenstrup, 1875)
- Sepia vercoi Adam, 1979
- Sepia vermiculata Quoy and Gaimard, 1832
- Sepia vietnamica Khromov, 1987
- Sepia vossi Khromov, 1996
- Sepia whitleyana (Iredale, 1926)
- Sepia zanzibarica Pfeffer, 1884
- Sepiadarium auritum Robson, 1914
- Sepiadarium austrinum Berry, 1921
- Sepiadarium gracilis Voss, 1962
- Sepiadarium kochi Steenstrup, 1881
- Sepiadarium malayense Robson, 1932
- Sepiadarium nipponianum Berry, 1932
- Sepiella cyanea Robson, 1924
- Sepiella inermis (Van Hasselt, 1835 in Férussac and D'Orbigny, 1834-1848)
- Sepiella japonica Sasaki, 1929
- Sepiella ocellata Pfeffer, 1884
- Sepiella ornata (Rang, 1837)
- Sepiella weberi Adam, 1939
- Sepietta neglecta Naef, 1916
- Sepietta oweniana (D'Orbigny, 1839-1841 in Férussac and D'Orbigny, 1834-1848)
- Sepietta petersi (Steenstrup, 1887)
- Sepiola affinis Naef, 1912
- Sepiola atlantica D'Orbigny, 1839-1842 in Férussac and D'Orbigny, 1834-1848
- Sepiola aurantiaca Jatta, 1896
- Sepiola birostrata Sasaki, 1918
- Sepiola intermedia Naef, 1912
- Sepiola knudseni Adam, 1984
- Sepiola ligulata Naef, 1912
- Sepiola parva Sasaki, 1913
- Sepiola pfefferi Grimpe, 1921
- Sepiola robusta Naef, 1912
- Sepiola rondeletii Leach, 1834 in Férussac and D'Orbigny, 1834-1848
- Sepiola rossiaeformis Pfeffer, 1884
- Sepiola steenstrupiana Levy, 1912
- Sepiola trirostrata Voss, 1962
- Sepiolina nipponensis (Berry, 1911)
- Sepioloidea lineolata (Quoy and Gaimard, 1832)
- Sepioloidea pacifica (Kirk, 1882)
- Sepioteuthis australis Quoy and Gaimard, 1832
- Sepioteuthis lessoniana Férussac, 1831 in Lesson, 1830-1831
- Sepioteuthis loliginiformis (Rüppell and Leuckart, 1828)
- Sepioteuthis sepioidea (Blainville, 1823)
- Septifer bifurcatus (Conrad, 1837)
- Septifer bilocularis (Linnaeus, 1758)
- Septifer bryanae
- Septifer rudis
- Serpulorbis decussatus (Gmelin, 1791)
- Serpulorbis squamiger (Carpenter, 1856)
- Serripes groenlandicus (Mohr, 1786)
- Serripes laperousii (Deshayes, 1839)
- Serripes notabilis (G. B. Sowerby III, 1915)
- Setia pulcherrima (Jeffreys, 1848)
- Setia turgida (Jeffreys, 1870)
- Sigatica carolinensis (Dall, 1889)
- Sigatica semisulcata (J. E. Gray, 1839)
- Silicula fragilis Jeffreys, 1879
- Siliqua alta (Broderip and G. B. Sowerby I, 1829)
- Siliqua costata Say, 1822
- Siliqua lucida (Conrad, 1837)
- Siliqua media
- Siliqua patula (Dixon, 1789)
- Siliqua sloati Hertlein, 1961
- Siliqua squama de Blainville, 1824
- Siliquaria modesta Dall, 1881
- Siliquaria squamata Blainville, 1827
- Similiphora intermedia (C. B. Adams, 1850)
- Simnia acicularis (Lamarck, 1810)
- Simnia aequalis Sowerby, 1832
- Simnia avena
- Simnia loebbeckeana (Weinkauff, 1881)
- Simnia uniplicata Sowerby, 1848
- Simnialena marferula Cate, 1973
- Simnialena uniplicata (G. B. Sowerby II, 1848)
- Simomactra dolabriformis (Conrad, 1867)
- Simomactra falcata (Gould, 1850)
- Simomactra planulata (Conrad, 1837)
- Simpsonaias ambigua (Say, 1825)
- Simpsonasus nankingensis (Heude, 1874)
- Simpsonella burroughiana (Lea, 1834)
- Simpsonella gracilis (Lea, 1851)
- Simrothiella borealis (Odhner, 1921)
- Simrothiella margaritacea (Koren and Danielssen, 1877)
- Sinanodonta angula (Tchang, Li & Liu, 1965)
- Sinanodonta calipygos (Kobelt, 1879)
- Sinanodonta elliptica (Heude, 1878)
- Sinanodonta jourdyi (Morlet, 1886)
- Sinanodonta lauta (Martens, 1877)
- Sinanodonta lucida (Heude, 1877)
- Sinanodonta schrenkii (Lea, 1870)
- Sinanodonta tumens (Haas, 1910)
- Sinanodonta woodiana (Lea, 1834)
- Sinezona rimuloides (Carpenter, 1865)
- Sinohyriopsis cumingii (Lea, 1852)
- Sinohyriopsis goliath (Rolle, 1904)
- Sinohyriopsis schlegelii (Martens, 1861)
- Sinosolenaia carinata (Heude, 1877)
- Sinosolenaia iridinea (Heude, 1874)
- Sinosolenaia oleivora (Heude, 1877)
- Sinosolenaia recognita (Heude, 1877)
- Sinum debile (Gould, 1853)
- Sinum maculatum (Say, 1831)
- Sinum minus (Dall, 1889)
- Sinum perspectivum (Say, 1831)
- Sinum scopulosum (Conrad, 1849)
- Siphonaria alternata Say, 1826
- Siphonaria brannani Stearns, 1872
- Siphonaria pectinata (Linnaeus, 1758)
- Siphonaria thersites Carpenter, 1864
- Siphonodentalium bushi Henderson, 1920
- Siphonodentalium lobatum (Sowerby, 1860)
- Siphonodentalium occidentale Henderson, 1920
- Siphonodentalium quadrifissatum (Pilsbry and Sharp, 1898)
- Siphonodentalium teres Jeffreys, 1882
- Siphonodentalium verrilli Henderson, 1920
- Siraius bicolor (Bergh, 1884)
- Siraius kyolis Ev. Marcus and Er. Marcus, 1967
- Skenea areolata (G. O. Sars, 1878)
- Skenea californica (Bartsch, 1907)
- Skenea carmelensis A. G. Smith and M. Gordon, 1948
- Skenea concordia (Bartsch, 1920)
- Skenea coronadoensis (Arnold, 1903)
- Skenea diaphana (A. E. Verrill, 1884)
- Skenea laevigata (Friele, 1876)
- Skenea serpuloides (Montagu, 1808)
- Skenea willei (Friele, 1886)
- Skeneopsis alaskana Dall, 1919
- Skeneopsis planorbis (Fabricius, 1780)
- Smaragdia bryanae (Pilsbry, 1918)
- Smaragdia viridis (Linnaeus, 1758)
- Smeagol manneringi Climo, 1980
- Solamen columbianum (Dall, 1897)
- Solamen leanum (Dall, 1897)
- Solamen megas (Dall, 1902)
- Solariella actinophora Dall, 1890
- Solariella aegleis Watson, 1879
- Solariella affinis (Friele, 1877)
- Solariella anoxia Dall, 1927
- Solariella asperrima (Dall, 1881)
- Solariella calatha Dall, 1927
- Solariella carvalhoi Loper and Cardoso, 1958
- Solariella cincta (Philippi, 1836)
- Solariella constricta Dall, 1927
- Solariella crossata (Dall, 1927)
- Solariella elegantula Dall, 1925
- Solariella infundibulum (Watson, 1879)
- Solariella intermedia (Leche, 1878)
- Solariella iris (Dall, 1881)
- Solariella lacunella (Dall, 1881)
- Solariella laevis Friele, 1886
- Solariella lamellosa (Dall, 1881)
- Solariella lewisae Willett, 1946
- Solariella lissocona (Dall, 1881)
- Solariella lubrica Dall, 1881
- Solariella maculata S. V. Wood, 1842
- Solariella margaritus
- Solariella micraulax J. H. McLean, 1964
- Solariella nuda Dall, 1896
- Solariella obscura (Couthouy, 1838)
- Solariella oxybasis Dall, 1890
- Solariella peramabilis Carpenter, 1864
- Solariella periscopia Dall, 1927
- Solariella pourtalesi Clench and Aguayo, 1939
- Solariella rhyssa Dall, 1919
- Solariella scabriuscula (Dall, 1881)
- Solariella sericifila (Dall, 1889)
- Solariella tiara (Watson, 1879)
- Solariella triplostephanus Dall, 1910
- Solariella tubula Dall, 1927
- Solariella varicosa (Mighels and C. B. Adams, 1842)
- Solariorbis arnoldi Bartsch, 1927
- Solariorbis blakei (Rehder, 1944)
- Solariorbis infracarinata Rehder, 1944
- Solariorbis infracarinatus (Gabb, 1881)
- Solariorbis mooreanus (Vanatta, 1904)
- Solariorbis shimeri
- Solariorbis terminalis (Pilsbry and McGinty, 1946)
- Solatisonax alleryi (Seguenza, 1876)
- Solatisonax borealis (A. E. Verrill and S. Smith, 1880)
- Solecurtus cumingianus Dunker, 1861
- Solecurtus guaymasensis (Lowe, 1935)
- Solecurtus sanctaemarthae D'Orbigny, 1842
- Solecurtus scopula (Turton, 1822)
- Solemya borealis Totten, 1834
- Solemya grandis A. E. Verrill and Bush, 1898
- Solemya occidentalis Deshayes, 1857
- Solemya panamensis Dall, 1908
- Solemya reidi Bernard, 1980
- Solemya valvulus (Carpenter, 1864)
- Solemya velum Say, 1822
- Solen marginatus
- Solen obliquus Sprengler, 1794
- Solen rostriformis Dunker, 1862
- Solen sicarius Gould, 1850
- Solen viridis Say, 1821
- Solenaia emarginata (Lea, 1860)
- Somatogyrus alcoviensis Krieger, 1972
- Somatogyrus amnicoloides Walker, 1915
- Somatogyrus aureus Tryon, 1865
- Somatogyrus biangulatus Walker, 1906
- Somatogyrus constrictus Walker, 1904
- Somatogyrus coosaensis Walker, 1904
- Somatogyrus crassilabris Walker, 1915
- Somatogyrus crassus Walker, 1904
- Somatogyrus currierianus (Lea, 1863)
- Somatogyrus decipiens Walker, 1909
- Somatogyrus depressus (Tryon, 1862)
- Somatogyrus excavatus Walker, 1906
- Somatogyrus georgianus Walker, 1904
- Somatogyrus hendersoni Walker, 1909
- Somatogyrus hinkleyi Walker, 1904
- Somatogyrus humerosus Walker, 1906
- Somatogyrus integra (Say, 1829)
- Somatogyrus nanus Walker, 1904
- Somatogyrus obtusus Walker, 1904
- Somatogyrus parvulus Tryon, 1865
- Somatogyrus pennsylvanicus Walker, 1904
- Somatogyrus pilsbryanus Walker, 1904
- Somatogyrus pumilus (Conrad, 1834)
- Somatogyrus pygmaeus Walker, 1909
- Somatogyrus quadratus Walker, 1906
- Somatogyrus rheophilus F. G. Thompson, 1984
- Somatogyrus rosewateri M. E. Gordon, 1986
- Somatogyrus sargenti Pilsbry, 1895
- Somatogyrus strengi Pilsbry and Walker, 1906
- Somatogyrus substriatus Walker, 1906
- Somatogyrus tenax F. G. Thompson, 1969
- Somatogyrus tennesseensis Walker, 1906
- Somatogyrus trothis Doherty, 1878
- Somatogyrus tryoni Pilsbry and F. C. Baker, 1927
- Somatogyrus virginicus Walker, 1904
- Somatogyrus walkerianus Aldrich, 1905
- Somatogyrus wheeleri Walker, 1915
- Songkhlanaia tamodienica Konopleva, Lheknim, Sriwoon, Kondakov, Vikhrev & Bolotov in Konopleva et al., 2023
- Sonorelix angelus (Gregg, 1949)
- Sonorelix avawatzica (S. S. Berry, 1930)
- Sonorelix baileyi (Bartsch, 1904)
- Sonorelix borregoensis (S. S. Berry, 1929)
- Sonorelix harperi (Bryant, 1900)
- Sonorelix melanophylon (S. S. Berry, 1930)
- Sonorelix melanopylon (S. S. Berry, 1930)
- Sonorelix rixfordi (Pilsbry, 1919)
- Sonorella allynsmithi Gregg and W. B. Miller, 1969
- Sonorella ambigua Pilsbry and Ferriss, 1915
- Sonorella anchana S. S. Berry, 1948
- Sonorella animasensis Pilsbry, 1939
- Sonorella apache Pilsbry and Ferriss, 1915
- Sonorella ashmuni Bartsch, 1904
- Sonorella baboquivariensis Pilsbry and Ferriss, 1915
- Sonorella bagnarai W. B. Miller, 1967
- Sonorella bartschi Pilsbry and Ferriss, 1915
- Sonorella bequaerti W. B. Miller, 1967
- Sonorella bicipitis Pilsbry and Ferriss, 1910
- Sonorella binneyi Pilsbry and Ferriss, 1910
- Sonorella bowiensis Pilsbry, 1905
- Sonorella bradshaveana W. B. Miller, 1984
- Sonorella caerulifluminis Pilsbry and Ferriss, 1919
- Sonorella christenseni Fairbanks and Reeder, 1980
- Sonorella clappi Pilsbry and Ferriss, 1915
- Sonorella coloradoensis (Stearns, 1890)
- Sonorella coltoniana Pilsbry, 1939
- Sonorella compar Pilsbry, 1919
- Sonorella dalli Bartsch, 1904
- Sonorella danielsi Pilsbry and Ferriss, 1910
- Sonorella delicata Pilsbry and Ferriss, 1919
- Sonorella dragoonensis Pilsbry and Ferriss, 1915
- Sonorella eremita Pilsbry and Ferriss, 1915
- Sonorella ferrissi Pilsbry, 1915
- Sonorella franciscana Pilsbry and Ferriss, 1919
- Sonorella galiurensis Pilsbry and Ferriss, 1919
- Sonorella grahamensis Pilsbry and Ferriss, 1919
- Sonorella granulatissima Pilsbry, 1902
- Sonorella hachitana (Dall, 1896)
- Sonorella huachucana Pilsbry, 1905
- Sonorella imitator Gregg and W. B. Miller, 1974
- Sonorella imperatrix Pilsbry, 1939
- Sonorella imperialis Pilsbry and Ferriss, 1923
- Sonorella insignis Pilsbry and Ferriss, 1919
- Sonorella macrophallus Fairbanks and Reeder, 1980
- Sonorella magdalenensis (Stearns, 1890)
- Sonorella meadi W. B. Miller, 1966
- Sonorella metcalfi W. B. Miller, 1976
- Sonorella micra Pilsbry and Ferriss, 1910
- Sonorella micromphala Pilsbry, 1939
- Sonorella milleri Christensen and Reeder, 1981
- Sonorella mustang Pilsbry and Ferriss, 1919
- Sonorella neglecta Gregg, 1951
- Sonorella odorata Pilsbry and Ferriss, 1919
- Sonorella optata Pilsbry and Ferris, 1910
- Sonorella orientis Pilsbry, 1936
- Sonorella papagorum Pilsbry and Ferriss, 1915
- Sonorella parva Pilsbry, 1905
- Sonorella reederi W. B. Miller, 1984
- Sonorella rinconensis Pilsbry and Ferriss, 1910
- Sonorella rooseveltiana S. S. Berry, 1917
- Sonorella rosemontensis Pilsbry, 1939
- Sonorella russelli W. B. Miller, 1984
- Sonorella sabinoensis Pilsbry and Ferriss, 1919
- Sonorella santaritana Pilsbry and Ferriss, 1915
- Sonorella simmonsi W. B. Miller, 1966
- Sonorella sitiens Pilsbry and Ferriss, 1915
- Sonorella superstitionis Pilsbry, 1939
- Sonorella todseni W. B. Miller, 1976
- Sonorella tortillita Pilsbry and Ferriss, 1919
- Sonorella tryoniana Pilsbry and Ferriss, 1923
- Sonorella vespertina Pilsbry and Ferriss, 1915
- Sonorella virilis Pilsbry, 1905
- Sonorella walkeri Pilsbry and Ferriss, 1915
- Sonorella waltoni W. B. Miller, 1968
- Sonorella xanthenes Pilsbry and Ferriss, 1923
- Spathochlamys benedicti (A. E. Verrill and Bush, 1897)
- Spathochlamys vestalis (Reeve, 1853)
- Spathoderma californicum (Schwabl, 1963)
- Spathoderma clenchi
- Spathoteredo spatha (Jeffreys, 1860)
- Speleodiscoides spirellum A. G. Smith, 1957
- Spengleria rostrata (Spengler, 1783)
- Sphaerium corneum (Linnaeus, 1758)
- Sphaerium fabale (Prime, 1852)
- Sphaerium nitidum Westerlund, 1876
- Sphaerium occidentale (J. Lewis, 1856)
- Sphaerium patella (Gould, 1850)
- Sphaerium rhomboideum (Say, 1822)
- Sphaerium simile (Say, 1817)
- Sphaerium striatinum (Lamarck, 1818)
- Sphenia antillensis Dall and Simpson, 1901
- Sphenia binghami Turton, 1822
- Sphenia luticola (Valenciennes, 1846)
- Sphenia ovoidea Carpenter, 1864
- Sphenia sincera Hanks and Packer, 1985
- Sphenia tumida J. E. Lewis, 1968
- Sphenonaias colorata (Küster, 1856)
- Sphenonaias flucki (Bartsch, 1906)
- Sphenonaias liebmanni (Philippi, 1847)
- Sphenonaias mexicana (Philippi, 1847)
- Sphenonaias microdon (Martens, 1887)
- Spiculata advena Cate, 1978
- Spiculata barbarensis (Dall, 1892)
- Spiculata loebbeckeana (Wienkauff, 1881)
- Spilochlamys conica F. G. Thompson, 1968
- Spilochlamys gravis F. G. Thompson, 1968
- Spilochlamys turgida F. G. Thompson, 1969
- Spinula subexcisa (Dautzenberg and Fischer, 1897)
- Spiroglyptus annulatus Daudin, 1800
- Spiroglyptus irregularis (d'Orbigny, 1842)
- Spiroglyptus lituellus Morch, 1861
- Spiroglyptus nebulosus (Dillwyn, 1817)
- Spiroglyptus rastrus (Morch, 1861)
- Spirolaxis centrifuga (di Monterosato, 1890)
- Spirolaxis lamellifer (Rehder, 1935)
- Spiromoelleria kachemakensis Baxter and J. H. McLean, 1984
- Spiromoelleria quadrae (Dall, 1897)
- Spirotropis modiolus (Cristofori and Jan, 1832
- Spirula spirula (Linnaeus, 1758)
- Spisula elliptica
- Spisula ovalis (J. Sowerby, 1817)
- Spisula raveneli (Conrad, 1831)
- Spisula solida (Linnaeus, 1758)
- Spisula solidissima (Dillwyn, 1817)
- Spisula subtruncata
- Splendrillia fucata (Reeve, 1845)
- Splendrillia halidorema (Schwengel, 1940)
- Splendrillia janetae Bartsch, 1934
- Splendrillia kathyae (Tippett, 1995)
- Splendrillia lissotropis (Dall, 1881)
- Splendrillia moseri (Dall, 1889)
- Splendrillia pagodula (Dall, 1889)
- Splendrillia petiti (Tippett, 1995)
- Splendrillia sunderlandi Petuch, 1987
- Splendrillia woodringi (Bartsch, 1934)
- Spondylus americanus Hermann, 1781
- Spondylus ictericus Reeve, 1856
- Spongiobranchaea australis d'Orbigny, 1836
- Spurilla chromosoma Cockerell and Eliot, 1905
- Spurilla neapolitana (delle Chiaje, 1823)
- Spurilla oliviae (Mcfarland, 1966)
- Spurilla verrucicornis (A. Costa, 1867)
- Spurwinkia salsa (Pilsbry, 1905)
- Stagnicola apicina (Lea, 1838)
- Stagnicola arctica (Lea, 1864)
- Stagnicola bonnevillensis (Call, 1884)
- Stagnicola caperata (Say, 1829)
- Stagnicola catascopium (Say, 1817)
- Stagnicola contracta (Currier, 1881)
- Stagnicola elodes (Say, 1821)
- Stagnicola elrodi (F. C. Baker and J. Henderson, 1933)
- Stagnicola elrodiana F. C. Baker, 1935
- Stagnicola emarginata (Say, 1821)
- Stagnicola exilis (Lea, 1834)
- Stagnicola gabbi (Tryon, 1865)
- Stagnicola hinkleyi (F. C. Baker, 1906)
- Stagnicola idahoensis (J. Henderson, 1931)
- Stagnicola kennicotti Baker, 1933
- Stagnicola mighelsi (W. G. Binney, 1865)
- Stagnicola montanensis (F. C. Baker, 1913)
- Stagnicola neopalustris (F. C. Baker, 1911)
- Stagnicola oronoensis (F. C. Baker, 1904)
- Stagnicola petoskeyensis (Walker, 1908)
- Stagnicola pilsbryi (Hemphill, 1890)
- Stagnicola traski (Tryon, 1863)
- Stagnicola utahensis (Call, 1884)
- Stagnicola walkeriana F. C. Baker, 1926
- Stagnicola woodruffi (F. C. Baker, 1901)
- Stauroteuthis syrtensis Verrill, 1879
- Steironepion minor (C. B. Adams, 1845)
- Steironepion moniliferum (G. B. Sowerby I, 1844)
- Stellatoma stellata (Stearns, 1872)
- Stenolena hawaiensis Dall, Bartsch, and Rehder, 1938
- Stenophysa marmorata (Guilding, 1828)
- Stenophysa maugeriae (J. E. Gray, 1837)
- Stenoplax bahamensis Kaas and Van Belle, 1987
- Stenoplax boogii (Haddon, 1886)
- Stenoplax conspicua (Pilsbry, 1892)
- Stenoplax corrugata (Pilsbry, 1892)
- Stenoplax erythronota
- Stenoplax fallax (Pilsbry, 1892)
- Stenoplax floridana (Pilsbry, 1892)
- Stenoplax heathiana S. S. Berry, 1946
- Stenoplax limaciformis
- Stenoplax purpurascens (C. B. Adams, 1845)
- Stenoplax rugulata
- Stenosemus abyssicola
- Stenotrema altispira (Pilsbry, 1894)
- Stenotrema angellum Hubricht, 1958
- Stenotrema barbatum (G. H. Clapp, 1904)
- Stenotrema barbigerum (Redfield, 1856)
- Stenotrema blandianum (Pilsbry, 1903)
- Stenotrema brevipila (G. H. Clapp, 1907)
- Stenotrema burringtoni Grimm, 1971
- Stenotrema calvescens Hubricht, 1961
- Stenotrema cohuttense (G. H. Clapp, 1914)
- Stenotrema deceptum (G. H. Clapp, 1905)
- Stenotrema depilatum (Pilsbry, 1895)
- Stenotrema edgarianum (I. Lea, 1841)
- Stenotrema edvardsi (Bland, 1856)
- Stenotrema exodon (Pilsbry, 1900)
- Stenotrema florida Pilsbry, 1940
- Stenotrema hirsutum (Say, 1817)
- Stenotrema labrosum (Bland, 1862)
- Stenotrema magnafumosum (Pilsbry, 1900)
- Stenotrema magnifumosum (Pilsbry, 1900)
- Stenotrema maxillatum (Gould, 1848)
- Stenotrema pilsbryi (Ferriss, 1900)
- Stenotrema pilula (Pilsbry, 1900)
- Stenotrema simile Grimm, 1971
- Stenotrema spinosum (I. Lea, 1830)
- Stenotrema stenotrema (Pfeiffer, 1842)
- Stenotrema unciferum (Pilsbry, 1900)
- Stenotrema waldense Archer, 1938
- Sterkia calamitosa (Pilsbry, 1889)
- Sterkia clementina (Sterki, 1890)
- Sterkia eyriesii (Drouet, 1859)
- Sterkia hemphilli (Sterki, 1890)
- Sthenorytis pernobilis (P. Fischer and Bernardi, 1857)
- Sthenoteuthis oualaniensis (Lesson, 1830 in 1830-1831)
- Sthenoteuthis pteropus (Steenstrup, 1855)
- Stigmaulax sulcatus (Born, 1778)
- Stilifer stimpsoni Verrill, 1872
- Stiliger bellulus (Orgibny, 1837)
- Stiliger costai Pruvot-fol, 1951
- Stiliger fuscatus Gould, 1870
- Stiliger fuscovittatus Lance, 1962
- Stiliger niger Lemche, 1935
- Stiliger oophaga (Lemche, 1972)
- Stiliger ornatus Ehrenberg, 1831
- Stiliger vanellus
- Stiliger vossi Ev. Marcus and Er. Marcus, 1960
- Stiobia nana F. G. Thompson, 1978
- Stoloteuthis leucoptera (Verrill, 1878)
- Stosicia aberrans (C. B. Adams, 1850)
- Stramonita haemastoma (Linnaeus, 1758)
- Stramonita rustica (Lamarck, 1822)
- Striarea centenaria (Say)
- Striarea lactea (Linnaeus, 1758)
- Striatura exigua (Stimpson, 1850)
- Striatura ferrea E. S. Morse, 1864
- Striatura meridionalis (Pilsbry and Ferriss, 1906)
- Striatura milium (E. S. Morse, 1859)
- Striatura pugentensis (Dall, 1895)
- Striatura pugetensis (Dall, 1895)
- Strictispira solida (C. B. Adams, 1850)
- Strigilla carnaria (Linnaeus, 1758)
- Strigilla gabbi Olsson and McGinty, 1958
- Strigilla mirabilis (Philippi, 1841)
- Strigilla pisiformis (Linnaeus, 1758)
- Strigilla producta Tryon, 1870
- Strigilla pseudocarnaria Boss, 1969
- Strigilla surinamensis Boss, 1972
- Strobilops aeneus Pilsbry, 1926
- Strobilops affinis Pilsbry, 1893
- Strobilops hubbardi (A. D. Brown, 1861)
- Strobilops labyrinthicus (Say, 1817)
- Strobilops texasianus Pilsbry and Ferriss, 1906
- Strombiformis alaskensis Bartsch, 1917
- Strombiformis almo Bartsch, 1917
- Strombiformis auricinctus Abbott, 1958
- Strombiformis bifasciatus D'Orbigny, 1842
- Strombiformis bilineatus Alder, 1848
- Strombiformis californicus Bartsch, 1917
- Strombiformis hemphilli (Dall, 1884)
- Strombiformis patula (Dall and Simpson, 1901)
- Strombus alatus Gmelin, 1791
- Strombus costatus Gmelin, 1791
- Strombus gallus Linnaeus, 1758
- Strombus gigas Linnaeus, 1758
- Strombus pugilis Linnaeus, 1758
- Strombus raninus Gmelin, 1791
- Strophitus howellsi Smith, Kiser, Johnson & Randklev, 2023
- Strophitus pascagoulaensis Smith, Johnson, Pfeiffer & Gangloff, 2018
- Strophitus radiatus (Conrad, 1834)
- Strophitus undulatus (Say, 1817)
- Strophitus williamsi Smith, Johnson, Pfeiffer & Gangloff, 2018
- Stygopyrgus bartonensis Hershler and Longley, 1986
- Stylidium eschrichtii (Middendorff, 1849)
- Styliferina goniochila
- Styliola subula (Quoy and Gaimard, 1827)
- Stylocheilus citrinus (Rang, 1828)
- Stylocheilus longicauda (Quoy and Gaimard, 1825)
- Suavodrillia kennicotti (Dall, 1871)
- Suavodrillia kennicottii (Dall, 1871)
- Suavodrillia willetti Dall, 1919
- Subcancilla attenuata (Broderip, 1936)
- Subcancilla erythrogramma (Tomlin, 1931)
- Subcancilla flammea
- Subcancilla foveolata
- Subcancilla gigantea (Reeve, 1844)
- Subcancilla lopesi (Matthews and Coelho, 1969)
- Subcancilla phorminx (S. S. Berry, 1969)
- Subcancilla sulcata (Swainson in Sowerby, 1835)
- Subsimnia bellamaris (S. S. Berry, 1946)
- Subulina octona (Bruguiere, 1792)
- Succinea barberi (W. B. Marshall, 1926)
- Succinea californica P. Fischer and Crosse, 1878
- Succinea campestris Say, 1817
- Succinea chittenangoensis Pilsbry, 1908
- Succinea floridana Pilsbry, 1905
- Succinea forsheyi I. Lea, 1864
- Succinea gabbi Tryon, 1866
- Succinea greeri Tryon, 1866
- Succinea greerii Tryon, 1866
- Succinea grosvenori I. Lea, 1864
- Succinea indiana Pilsbry, 1905
- Succinea luteola Gould, 1848
- Succinea oregonensis I. Lea, 1841
- Succinea ovalis Say, 1817
- Succinea paralia Hubricht, 1983
- Succinea pennsylvanica Pilsbry, 1948
- Succinea pseudavara Webb, 1954
- Succinea putris (Linnaeus, 1758)
- Succinea rusticana Gould, 1846
- Succinea solastra Hubricht, 1961
- Succinea strigata Pfeiffer, 1855
- Succinea unicolor Tryon, 1866
- Succinea urbana Hubricht, 1961
- Succinea vaginacontorta C. B. Lee, 1951
- Succinea wilsoni I. Lea, 1864
- Succinea wilsonii I. Lea, 1864
- Suhinia steinbergae (Lance, 1962)
- Sulcosinus taphrius (Dall, 1891)
- Sundadontina brandti Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Sundadontina cumingii (Lea, 1851)
- Sundadontina harmandi (Crosse & Fischer, 1876)
- Sundadontina mabilli (Rochebrune, 1882)
- Sundadontina moreleti (Crosse & Fischer, 1876)
- Sundadontina ovalis (Morlet, 1889)
- Sundadontina plugpomenica Konopleva, Lheknim, Sriwoon, Kondakov, Vikhrev & Bolotov in Konopleva et al., 2023
- Sundadontina ponderosa (Preston, 1909)
- Sundadontina sulcata (Rochebrune, 1882)
- Sundadontina tanintharyiensis Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Sundadontina taskaevi Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Sundadontina tumida (Morelet, 1866)
- Supplanaxis nucleus (Bruguiere, 1789)
- Suturoglypta iontha (Ravenel, 1861)
- Suturoglypta pretrii (Duclos, 1846)
- Synaptocochlea concinna
- Synaptocochlea montrouzieri Pilsbry, 1890
- Synaptocochlea picta (d'Orbigny, 1842)
- Syncera succinea
- Tachyrhynchus erosus (Couthouy, 1838)
- Tachyrhynchus lacteolus (Carpenter, 1864)
- Tachyrhynchus pratomus Dall, 1919
- Tachyrhynchus reticulatis (Mighels and C. B. Adams, 1842
- Tachyrhynchus reticulatus (Mighels and C. B. Adams, 1842)
- Tachyrhynchus stearnsii Dall, 1919
- Tagelus affinis (C. B. Adams, 1852)
- Tagelus californianus (Conrad, 1837)
- Tagelus divisus (Spengler, 1794)
- Tagelus plebeius (Lightfoot, 1786)
- Tagelus subteres (Conrad, 1837)
- Talparia cinerea (Gmelin, 1791)
- Tambja gratiosa (Bergh, 1890)
- Tamsiella amazonica Bonetto, 1972
- Tamsiella schroeteriana (Lea, 1852)
- Tamsiella tamsiana (Dunker, 1858)
- Taningia danae Joubin, 1931
- Taningia persica (Naef, 1923)
- Taonius pavo (Lesueur, 1821)
- Tapes pullastra (Montagu, 1803)
- Tapes rhomboides (Pennant, 1777)
- Taranis borealis Bouchet and Waren, 1980
- Taranis cirrata (Brugnone, 1862)
- Taranis morchii (Malm, 1861)
- Taranis pulchella Verrill, 1880
- Tarebia granifera (Lamarck, 1822)
- Taringa aivica Ev. Marcus and Er. Marcus, 1967
- Taringa telopia Er. Marcus, 1955
- Taylorconcha insperata Hershler, Liu, Frest, Johannes and Clark, 2006
- Taylorconcha serpenticola Hershler, Frest, Johannes, Bowler and F. G. Thompson, 1994
- Tchangsinaia piscicula (Heude, 1874)
- Tectarius antonii (Philippi, 1846)
- Tectarius coronatus Valenciennes, 1833
- Tectarius muricatus (Linnaeus, 1758)
- Tectarius tuberculatus
- Tectininus nodulosus (Pfeiffer, 1839)
- Tectonatica pusilla (Say, 1822)
- Tectura depicta (Hinds, 1842)
- Tectura fenestrata (Reeve, 1855)
- Tectura paleacea (Gould, 1853)
- Tectura persona (Rathke, 1833)
- Tectura rosacea (Carpenter, 1864)
- Tectura scutum (Rathke, 1833)
- Tectura testudinalis (Muller, 1776)
- Tectura virginea (O. F. Mueller, 1776)
- Tegula aureotincta (Forbes, 1850)
- Tegula brunnea Philippi, 1848
- Tegula corteziana Mclean, 1970
- Tegula eiseni Jordan, 1936
- Tegula excavata (Lamarck, 1822)
- Tegula fasciata (Born, 1778)
- Tegula felipenis Mclean, 1970
- Tegula funebralis (A. Adams, 1855)
- Tegula gallina (Forbes, 1850)
- Tegula gruneri (Philippi, 1849)
- Tegula hotessieriana (d'Orbigny, 1842)
- Tegula lividomaculata (C. B. Adams, 1845)
- Tegula maculostriata (C. B. Adams)
- Tegula mariana Dall, 1919
- Tegula montereyi (Kiener, 1850)
- Tegula patagonica (Orbigny, 1840)
- Tegula pellisserpentis Wood, 1828
- Tegula pulligo (Gmelin, 1791)
- Tegula regina Stearns, 1892
- Tegula rubroflammulata (Koch, 1843)
- Tegula verdispira J. H. McLean, 1970
- Tegula viridula (Gmelin, 1791)
- Teinostoma amplectans Carpenter, 1857
- Teinostoma bibbianum Dall, 1919
- Teinostoma biscaynense Pilsbry and McGinty, 1945
- Teinostoma carinicallus Pilsbry and McGinty, 1946
- Teinostoma cercinellum
- Teinostoma clavium Pilsbry and McGinty, 1945
- Teinostoma cocolitoris Pilsbry and McGinty, 1945
- Teinostoma cryptospira (A. E. Verrill, 1884)
- Teinostoma floridensis (Dall, 1927)
- Teinostoma gallegosi Jordan, 1936
- Teinostoma goniogyrus Pilsbry and McGinty, 1945
- Teinostoma incertum Pilsbry and McGinty, 1945
- Teinostoma lerema Pilsbry and McGinty, 1945
- Teinostoma lituspalmarum Pilsbry and McGinty, 1945
- Teinostoma megastoma (C. B. Adams, 1850)
- Teinostoma megastomum (C. B. Adams, 1850)
- Teinostoma minusculum (Bush, 1897)
- Teinostoma nense Pilsbry and McGinty, 1945
- Teinostoma nesaeum Pilsbry and McGinty, 1945
- Teinostoma obtectum Pilsbry and McGinty, 1945
- Teinostoma parvicallum Pilsbry and McGinty, 1945
- Teinostoma pilsbryi Mcginty, 1945
- Teinostoma politum
- Teinostoma reclusum (Dall, 1889)
- Teinostoma salvanium Dall, 1919
- Teinostoma sapiella Dall, 1919
- Teinostoma sapiellum Dall. 1919
- Teinostoma semistriatum (d'Orbigny, 1842)
- Teinostoma solida (Dall, 1889)
- Teinostoma supravallatum (Carpenter, 1864)
- Teinostoma tectum Pilsbry and McGinty, 1945
- Tellidora cristata (Recluz, 1842)
- Tellidorella cristulata
- Tellimya ferruginosa (Montagu, 1803)
- Tellimya phascolionis (Dautzenberg and Fischer, 1925)
- Tellina aequistriata Say, 1824
- Tellina agilis Stimpson, 1857
- Tellina alerta Boss, 1964
- Tellina alternata Say, 1822
- Tellina americana Dall, 1900
- Tellina amianta Dall, 1900
- Tellina angulosa Gmelin, 1791
- Tellina bodegensis Hinds, 1845
- Tellina candeana D'Orbigny, 1842
- Tellina carpenteri Dall, 1900
- Tellina cerrosiana Dall, 1900
- Tellina coani Keen, 1971
- Tellina colorata Dall, 1900
- Tellina consobrina D'Orbigny, 1842
- Tellina cristallina Spengler, 1798
- Tellina cumingii Hanley, 1844
- Tellina diantha Boss, 1964
- Tellina donacina
- Tellina elucens Mighels, 1845
- Tellina euvitrea Boss, 1964
- Tellina exerythra Boss, 1964
- Tellina fabula Gmelin, 1791
- Tellina fausta Pulteney, 1799
- Tellina flucigera Dall, 1908
- Tellina gibber Von Ihering, 1907
- Tellina gouldii Hanley, 1846
- Tellina guildingii Hanley, 1844
- Tellina idae Dall, 1891
- Tellina inaequistriata Donovan, 1802
- Tellina iris Say, 1822
- Tellina juttingae Altena, 1965
- Tellina laevigata Linnaeus, 1758
- Tellina lamellata Carpenter, 1855
- Tellina lineata Turton, 1819
- Tellina listeri Roding, 1798
- Tellina lutea W. Wood, 1828
- Tellina magna Spengler, 1798
- Tellina martinicensis D'Orbigny, 1842
- Tellina mera Say, 1834
- Tellina meropsis Dall, 1900
- Tellina modesta (Carpenter, 1864)
- Tellina nitens C. B. Adams, 1845
- Tellina nuculoides (Reeve, 1854)
- Tellina oahuana
- Tellina ochracea Carpenter, 1864
- Tellina pacifica Dall, 1900
- Tellina paramera Boss, 1964
- Tellina persica Dall and Simpson, 1901
- Tellina pristiphora Dall, 1900
- Tellina probina Boss, 1964
- Tellina proclivis Hertlein and Strong, 1949
- Tellina prora Hanley, 1844
- Tellina punicea Born, 1778
- Tellina pygmaea
- Tellina radiata Linnaeus, 1758
- Tellina reclusa Dall, 1900
- Tellina recurvata Hertlein and Strong, 1949
- Tellina rubescens Hanley, 1844
- Tellina sandix Boss, 1968
- Tellina similis J. Sowerby, 1806
- Tellina simulans C. B. Adams, 1852
- Tellina squamifera Deshayes, 1855
- Tellina sybaritica Dall, 1881
- Tellina tabogensis Salisbury, 1934
- Tellina tampaensis Conrad, 1866
- Tellina tenella A. E. Verrill, 1874
- Tellina tenuis
- Tellina texana Dall, 1900
- Tellina variegata
- Tellina versicolor DeKay, 1843
- Tellina vespuciana (d'Orbigny, 1842)
- Tellina virgo Hanley, 1844
- Tenagodus squamatus (de Blainville, 1827)
- Tenaturris bartletti (Dall, 1889)
- Tenaturris janira (Dall, 1919)
- Tenellia adspersa (Nordmann, 1845)
- Tenellia fuscata (Gould, 1870)
- Tenellia ventilabrum (Dalyell, 1853)
- Teralatirus cayohuesonicus (G. B. Sowerby III, 1878)
- Terebra acrior Dall, 1889
- Terebra alba J. E. Gray, 1834
- Terebra arcas Abbott, 1954
- Terebra armillata Hinds, 1844
- Terebra benthalis Dall, 1889
- Terebra concava (Say, 1826)
- Terebra crenifera Deshayes, 1859
- Terebra dislocata (Say, 1822)
- Terebra doellojuradoi Carcelles, 1953
- Terebra floridana Dall, 1889
- Terebra glossema Schwengel, 1942
- Terebra hemphilli Vanatta, 1924
- Terebra lindae Petuch, 1987
- Terebra nassula Dall, 1889
- Terebra pedroana Dall, 1908
- Terebra protexta (Conrad, 1846)
- Terebra rushii Dall, 1889
- Terebra taurina (Lightfoot, 1786)
- Terebra thaanumi Pilsbry, 1921
- Terebra vinosa Dall, 1889
- Teredo bartschi W. Clapp, 1923
- Teredo fulleri W. Clapp, 1924
- Teredo furcifera von Martens, 1894
- Teredo megotara (Hanley, 1848)
- Teredo navalis Linnaeus, 1758
- Teredo norvagicus (Spengler, 1792)
- Teredo portoricensis W. Clapp, 1924
- Teredora malleolus (Turton, 1822)
- Teredothyra excavata (Jeffreys, 1860)
- Teretia anceps (Eichwald, 1830)
- Teretoctopus alcocki Robson, 1932
- Teretoctopus indicus Robson, 1929
- Tergipes tergipes (Forskal, 1775)
- Teskeyostrea weberi (Olsson, 1951)
- Testacella haliotidea Draparnaud, 1801
- Tethys fimbria Linnaeus, 1758
- Tetracheledone spinicirrus Voss, 1955
- Tetronychoteuthis dussumieri (D'Orbigny, 1839-1842 in Férussac and D'Orbigny, 1834-1848)
- Teuthowenia maculata (Leach, 1817)
- Teuthowenia megalops (Prosch, 1847)
- Teuthowenia pellucida (Chun, 1910)
- Texadina barretti (Morrison, 1965)
- Texadina sphinctostoma (Abbott and Ladd, 1951)
- Texapyrgus longleyi F. G. Thompson and Hershler, 1991
- Thaiconcha callifera (Martens, 1860)
- Thaiconcha munelliptica Konopleva, Bolotov, Pfeiffer, Vikhrev, Kondakov, Gofarov, Tomilova, Tanmuangpak et al., 2021
- Thaiconcha thaiensis Konopleva, Bolotov, Pfeiffer, Vikhrev, Kondakov, Gofarov, Tomilova, Tanmuangpak et al., 2021
- Thais deltoidea (Lamarck, 1822)
- Thais emarginata
- Thais kiosquiformis (Duclos, 1832)
- Thais lamellosa
- Thais nodosa Linnaeus, 1758
- Thais speciosa (Valenciennes, 1832)
- Thais triangularis (Blainville, 1832)
- Thais trinitatensis (Guppy, 1869)
- Thais undata Lamarck
- Thala floridana (Dall, 1884)
- Thala foveata (Sowerby, 1874)
- Thala gratiosa (Reeve, 1845)
- Thaleia nisonis (Dall, 1889)
- Thaltia rubra
- Thaltia subangulata
- Tharsiella romettensis (Granata Grillo, 1877)
- Thaumeledone brevis (Hoyle, 1885)
- Thaumeledone gunteri Robson, 1930
- Theba pisana (Muller, 1774)
- Thecacera pennigera (Montagu, 1815)
- Thelecythara floridana Fargo, 1953
- Thelecythara mucronata (Guppy, 1896)
- Theliderma cylindrica (Say, 1817)
- Theliderma intermedia (Conrad, 1836)
- Theliderma johnsoni Bogan & Lopes-Lima in Lopes-Lima & Bogan, 2019
- Theliderma metanevra (Rafinesque, 1820)
- Theliderma sparsa (Lea, 1841)
- Theliderma stapes (Lea, 1831)
- Theodoxus fluviatilis (Linnaeus, 1758)
- Theora lubrica Gould, 1861
- Thesbia nana (Loven, 1846)
- Theta chariessa (Watson, 1881)
- Theta lyronuclea (Clarke, 1959)
- Theta vayssieri (Dautzenberg, 1925)
- Thiara bladwini Ancey, 1899
- Thiara indefinita Lea and Lea, 1851
- Thiara kauaiensis Pease, 1870
- Thiara verrauiana Lea, 1856
- Thliptodon antarcticus Meisenheimer, 1906
- Thliptodon diaphanus (Meisenheimer, 1903)
- Thliptodon gegenbauri Boas, 1886
- Thordisa bimaculata Lance, 1966
- Thordisa rubescens Behrens and R. Henderson, 1981
- Thracia adamsi MacGinitie, 1959
- Thracia challisiana Dall, 1915
- Thracia condoni Dall, 1909
- Thracia conradi Couthouy, 1839
- Thracia convexa (W. Wood, 1815)
- Thracia corbuloides Blainville, 1824
- Thracia curta Conrad, 1837
- Thracia devexa G. O. Sars, 1878
- Thracia distorta Montagu, 1808
- Thracia itoi
- Thracia morrisoni R. E. Petit, 1964
- Thracia myopsis Møller, 1842
- Thracia phaseolina (Lamarck, 1822)
- Thracia pubescens (Pulteney, 1799)
- Thracia rugosa Lamarck, 1818
- Thracia septentrionalis Jeffreys, 1872
- Thracia stimpsoni Dall, 1886
- Thracia trapezoides Conrad, 1849
- Thracia villosiuscula
- Thuridilla picta (A. E. Verrill, 1901)
- Thyasira alleni Carrozza, 1981
- Thyasira barbarensis (Dall, 1890)
- Thyasira brevis A. E. Verrill and Bush, 1898
- Thyasira croulinensis Jeffreys, 1874
- Thyasira cycladia S. Wood, 1853
- Thyasira cygnus Dall, 1916
- Thyasira elliptica Verrill and Bush, 1898
- Thyasira equalis (A. E. Verrill and Bush, 1898)
- Thyasira eumyaria M. Sars, 1870
- Thyasira flexuosa (Montagu, 1803)
- Thyasira gouldii (Philippi, 1845)
- Thyasira grandis Verrill and Smith, 1885
- Thyasira granulosa di Monterosato, 1874
- Thyasira incrassatus (Jeffreys, 1876)
- Thyasira obsoleta (Verrill and Bush, 1898)
- Thyasira ovoidea Dall, 1889
- Thyasira plicata Verrill and Smith, 1885
- Thyasira pygmaea Verrill and Bush, 1898
- Thyasira rotunda Jeffreys, 1881
- Thyasira simplex A. E. Verrill and Bush, 1898
- Thyasira subovata Jeffreys, 1881
- Thyasira subtrigona (Jeffreys, 1858)
- Thyasira succisa (Jeffreys, 1876)
- Thyasira tortuosa Jeffreys, 1881
- Thyasira tricarinata Dall, 1916
- Thyasira triseriata
- Thyasira trisinuata (d'Orbigny, 1842)
- Thyonicola americana Tikasingh, 1961
- Thyonicola americanus Tikasingh, 1961
- Thysanophora horni (Gabb, 1866)
- Thysanophora hornii (Gabb, 1866)
- Thysanophora plagioptycha (Shuttleworth, 1854)
- Thysanoteuthis danae (Joubin, 1933)
- Thysanoteuthis nuchalis Pfeffer, 1912
- Thysanoteuthis rhombus Troschel, 1857
- Timoclea grus (Holmes, 1858)
- Timoclea ovata (Pennant, 1777)
- Timoclea pygmaea (Lamarck, 1818)
- Tindaria acinula (Dall, 1890)
- Tindaria brunnea Dall, 1916
- Tindaria cervola Dall, 1916
- Tindaria compressa
- Tindaria dicofania Dall, 1916
- Tindaria kennerlyi Dall, 1897
- Tindaria miniscula Saunders and Allen, 1977
- Tindaria panamensis
- Titiscania limacina Bergh, 1890
- Tivela abaconis Dall, 1902
- Tivela floridana Rehder, 1939
- Tivela mactroides (Born, 1778)
- Tivela stultorum (Mawe, 1823)
- Tochuina tetraquetra (Pallas, 1788)
- Todarodes angolensis Adam, 1962
- Todarodes filippovae Adam, 1975
- Todarodes pacificus (Steenstrup, 1880)
- Todarodes sagittatus (Lamarck, 1798)
- Todaropsis eblanae (Ball, 1841)
- Tomburchus redondoensis (Burch, 1941)
- Tomura bicaudata (Pilsbry and McGinty, 1946)
- Tonicella insignis (Reeve, 1847)
- Tonicella lineata (W. Wood, 1815)
- Tonicella marmorea (Fabricius, 1780)
- Tonicella rubra (Linnaeus, 1767)
- Tonicella sitkensis (Middendorff, 1846)
- Tonicia pustulifera Dall, 1919
- Tonicia schrammi (Shuttleworth, 1856)
- Tonna galea (Linnaeus, 1758)
- Tonna maculosa (Dillwyn, 1817)
- Tonna pennata (Morch, 1852)
- Torellia ammonia Dall, 1919
- Torellia cingulata Verrill
- Torellia delicata (Philippi, 1844)
- Torellia fimbriata A. E. Verrill and S. Smith, 1882
- Torellia vallonia Dall, 1919
- Torellia vestita Jeffreys, 1867
- Tornatina inconspicua (Olsson and McGinty, 1958)
- Tornus basiglabra
- Tornus calianus (Dall, 1919)
- Tornus galaensis
- Tornus greyana
- Tornus laevicarinatus
- Toxolasma corvunculus (Lea, 1868)
- Toxolasma cylindrellus (Lea, 1868)
- Toxolasma lividum Rafinesque, 1831
- Toxolasma parvum (Barnes, 1823)
- Toxolasma paulum (Lea, 1840)
- Toxolasma pullus (Conrad, 1838)
- Toxolasma texasiense (Lea, 1857)
- Trabecula laxa (Dall and Bartsch, 1909)
- Trachycardium egmontianum (Shuttleworth, 1856)
- Trachycardium isocardia (Linnaeus, 1758)
- Trachycardium magnum (Linnaeus, 1758)
- Trachycardium muricatum (Linnaeus, 1758)
- Trachycardium quadragenarium (Conrad, 1837)
- Trachypollia didyma (Swengel, 1943)
- Trachypollia lugubris (C. B. Adams, 1852)
- Trachypollia nodulosa (C. B. Adams, 1845)
- Trachypollia sclera Woodring, 1928
- Trachypollia turricula (von Maltzan, 1884)
- Tralia ovula (Bruguiere, 1789)
- Transennella conradina Dall, 1884
- Transennella cubaniana (d'Orbigny, 1842)
- Transennella stimpsoni Dall, 1902
- Transennella tantilla (Gould, 1853)
- Trapania dalva Ev. Marcus, 1972
- Trapania maculata Haefelfinger, 1960
- Trapania pallida Kress, 1968
- Trapania velox (Cockerell, 1901)
- Trapezidens angustior (Hanley & Theobald, 1872)
- Trapezidens dolichorhynchus (Tapparone Canefri, 1889)
- Trapezidens exolescens (Gould, 1843)
- Trapezidens mogaungensis Bolotov, Konopleva, Chan, Lunn, Win, Gofarov, Kondakov, Tomilova & Vikhrev, 2022
- Trapezidens scutum (Sowerby, 1868)
- Trapezidens yeti Konopleva, Bolotov, Kondakov, Kononov, Gofarov, Tomilova, Lunn, Chan, Win & Vikhrev, 2020
- Trapezium liratum (Reeve, 1843)
- Trapezoideus foliaceus (Gould, 1843)
- Trapezoideus lenya Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Trapezoideus mitanensis Bolotov, Konopleva, Than Win, Kondakov & Vikhrev in Bolotov et al., 2022
- Trapezoideus subviridis Pfeiffer, Graf, Cummings & Page, 2021
- Trapezoideus thachiadensis Konopleva, Lheknim, Sriwoon, Kondakov, Vikhrev & Bolotov in Konopleva et al., 2023
- Tremoctopus gelatus Thomas, 1977
- Tremoctopus violaceus Chiaie, 1830 in 1823-1831
- Tresus allomyax Coan and Valentich Scott, 2000
- Tresus capax (Gould, 1850)
- Tresus nuttallii (Conrad, 1837)
- Tresus pajaroanus (Conrad, 1857)
- Trichia hispida (Linnaeus, 1758)
- Trichia striolata (Pfeiffer, 1828)
- Trichotropis alba (Bouchet and Waren, 1985)
- Trichotropis bicarinata (G. B. Sowerby I, 1825)
- Trichotropis borealis Broderip and G. B. Sowerby I, 1829
- Trichotropis cancellata Hinds, 1843
- Trichotropis conica Moller, 1842
- Trichotropis coronata Gould, 1860
- Trichotropis fuscoapicata (Bouchet and Waren, 1985)
- Trichotropis inflata Friele, 1879
- Trichotropis insignis Middendorff, 1849
- Trichotropis kroyeri Philippi, 1849
- Trichotropis migrans Dall, 1881
- Trichotropis subsuratus
- Tricolia adamsi (Philippi, 1853)
- Tricolia affinis (C. B. Adams, 1850)
- Tricolia beaui Robertson, 1958
- Tricolia bella (M. Smith, 1937)
- Tricolia compta (Gould, 1855)
- Tricolia cruenta Robertson, 1958
- Tricolia cyclostoma (Carpenter, 1864)
- Tricolia pterocladica
- Tricolia pulloides (Carpenter, 1865)
- Tricolia pullus Linnaeus, 1758
- Tricolia substriata (Carpenter, 1864)
- Tricolia tesselata (Potiez and Michaud, 1838)
- Tricolia tessellata (Potiez and Michaud, 1838)
- Tricolia thalassicola Robertson, 1958
- Tricolia variabilis
- Tricolia variegata (Carpenter, 1864)
- Trigoniocardia antillarum (d'Orbigny, 1842)
- Trigoniocardia ovuloides (Reeve, 1845)
- Trigonostoma rugosum (Lamarck, 1822)
- Trigonostoma tenerum (Philippi, 1848)
- Trigonulina ornata (d'Orbigny, 1842)
- Trilobopsis loricata (Gould, 1846)
- Trilobopsis penitens (Hanna and Rixford, 1923)
- Trilobopsis roperi (Pilsbry, 1889)
- Trilobopsis tehamana (Pilsbry, 1928)
- Trilobopsis trachypepla (S. S. Berry, 1933)
- Trimusculus carinatus (Dall, 1870)
- Trimusculus reticulatus (G. B. Sowerby I, 1835)
- Trinchesia amoena
- Trinchesia caerulea
- Trinchesia concinna
- Trinchesia foliata
- Trinchesia perca (Marcus, 1958)
- Trinchesia veronica Verrill, 1880
- Trinchesia viridis
- Triodopsis alabamensis (Pilsbry, 1902)
- Triodopsis albolabris (Say, 1816)
- Triodopsis alleni (Sampson, 1883)
- Triodopsis anteridon Pilsbry, 1940
- Triodopsis burchi Hubricht, 1950
- Triodopsis caroliniensis (I. Lea, 1834)
- Triodopsis chadwicki (Ferriss, 1907)
- Triodopsis claibornensis Lutz, 1950
- Triodopsis complanata (Pilsbry, 1898)
- Triodopsis cragini Call, 1886
- Triodopsis denotata (Ferussac, 1821)
- Triodopsis dentifera (A. Binney, 1837)
- Triodopsis discoidea (Pilsbry, 1904)
- Triodopsis divesta (Gould, 1848)
- Triodopsis fallax (Say, 1825)
- Triodopsis fosteri (F. C. Baker, 1921)
- Triodopsis fradulenta (Pilsbry, 1894)
- Triodopsis fulciden Hubricht, 1952
- Triodopsis fulcidens Hubricht, 1952
- Triodopsis henriettae (Mazyck, 1877)
- Triodopsis hopetonensis (Shuttleworth, 1852)
- Triodopsis juxtidens (Pilsbry, 1894)
- Triodopsis lioderma (Pilsbry, 1902)
- Triodopsis major (A. Binney, 1937)
- Triodopsis maratima (Pilsbry, 1890)
- Triodopsis messana Hubricht, 1952
- Triodopsis multilineata (Say, 1821)
- Triodopsis neglecta (Pilsbry, 1899)
- Triodopsis obsoleta (Pilsbry, 1894)
- Triodopsis obstricta (Say, 1821)
- Triodopsis occidentalis (Pilsbry and Ferriss, 1894)
- Triodopsis palustris Hubricht, 1958
- Triodopsis pendula Hubricht, 1952
- Triodopsis picea Hubricht, 1958
- Triodopsis platysayoides (Brooks, 1933)
- Triodopsis rugosa Brooks and MacMillan, 1940
- Triodopsis soelneri (J. B. Henderson, 1907)
- Triodopsis tennesseensis (Walker and Pilsbry, 1902)
- Triodopsis tridentata (Say, 1816)
- Triodopsis vannostrandi (Bland, 1875)
- Triodopsis vulgata Pilsbry, 1940
- Triodopsis vultuosa (Gould, 1848)
- Triopha aurantica Cockerel, 1908
- Triopha carpenteri (Stearns, 1873)
- Triopha catalinae (J. G. Cooper, 1863)
- Triopha maculata MacFarland, 1905
- Triopha occidentalis (Fewkes, 1889)
- Triphora ammonia
- Triphora callipyrga (Bartsch, 1907)
- Triphora calva Faber and Moolenbeek, 1991
- Triphora carpenteri (Bartsch, 1907)
- Triphora catalinensis (Bartsch, 1907)
- Triphora compsa Dall, 1927
- Triphora decorata (C. B. Adams, 1850)
- Triphora intermedia (Dall, 1881)
- Triphora lilacina (Dall, 1889)
- Triphora longissima (Dall, 1881)
- Triphora melanura (C. B. Adams, 1850)
- Triphora montereyensis (Bartsch, 1907)
- Triphora nigrocincta (C. B. Adams, 1839)
- Triphora ornata (Deshayes, 1832)
- Triphora pedroana (Bartsch, 1907)
- Triphora peninsularis (Bartsch, 1907)
- Triphora penninsularis (Bartsch, 1907)
- Triphora perversa
- Triphora pulchella (C. B. Adams, 1850)
- Triphora pyrrha (J. B. Henderson and Bartsch, 1914)
- Triphora stearnsi (Bartsch, 1907)
- Triphora triserialis (Dall, 1881)
- Triphora turristhomae (Holton, 1802)
- Triplodon chodo Mansur & Pimpão, 2008
- Triplodon corrugatus (Lamarck, 1819)
- Triptychus niveus Morch, 1875
- Tritonia bayeri Ev. Marcus and Er. Marcus, 1967
- Tritonia diomedea Bergh, 1894
- Tritonia episcopalis Bouchet, 1977
- Tritonia exsulans Bergh, 1894
- Tritonia festiva (Stearns, 1873)
- Tritonia griegi Edhner, 1922
- Tritonia hombergii Cuvier, 1802
- Tritonia lineata
- Tritonia manicata Deshayes, 1853
- Tritonia myrakeenae Bertsch and Mozqueira, 1986
- Tritonia nilsodhneri Marcus, 1983
- Tritonia odhneri
- Tritonia palmeri (J. G. Cooper, 1862)
- Tritonia plebeia Johnston, 1828
- Tritonia wellsi Er. Marcus, 1961
- Tritonidoxa wellsi (Er. Marcus, 1961)
- Tritoniopsis frydis Er. Marcus and Ev. Marcus, 1970
- Tritonoharpa lanceolata (Menke, 1828)
- Trivia antillarum
- Trivia arctica
- Trivia californiana (Gray, 1827)
- Trivia candidula Gaskoin, 1835
- Trivia maltbiana Schwengel and McGinty, 1942
- Trivia monacha
- Trivia nix (Schilder, 1922)
- Trivia pediculus (Linnaeus, 1758)
- Trivia quadripunctata (Gray, 1827)
- Trivia ritteri Raymond, 1903
- Trivia solandri (Sowerby, 1832)
- Trivia suffusa (Gray, 1832)
- Trochaclis islandica Warren, 1989
- Trochoidea elegans (Gmelin, 1791)
- Trochus intextus
- Trophon cerrosensis Dall, 1891
- Trophon muricatus
- Trophonopsis alaskanus (Dall, 1902)
- Trophonopsis beringi (Dall, 1902)
- Trophonopsis cepulus (Sowerby, 1880)
- Trophonopsis clathratus (Linnaeus, 1758)
- Trophonopsis cymatus (Dall, 1902)
- Trophonopsis dalli (Kobelt, 1878)
- Trophonopsis elegantulus (Dall, 1907)
- Trophonopsis fabricii (Beck, 1842)
- Trophonopsis kamchatkana (Dall, 1902)
- Trophonopsis keepi (Strong and Hertlein, 1937)
- Trophonopsis lasius (Dall, 1919)
- Trophonopsis macouni (Dall, 1910)
- Trophonopsis orpheus (Gould, 1849)
- Trophonopsis pacificus (Dall, 1902)
- Trophonopsis paucicostatus
- Trophonopsis rotundatus (Dall, 1902)
- Trophonopsis scitulus (Dall, 1891)
- Trophonopsis staphylinus (Dall, 1919)
- Trophonopsis stuarti (E. A. Smith, 1880)
- Trophonopsis tenuisculptus Carpenter
- Trophonopsis truncatus (Strom, 1768)
- Truncatella bahamensis Clench and Turner, 1948
- Truncatella barbadensis Pfeiffer, 1856
- Truncatella californica Pfeiffer, 1857
- Truncatella caribaeensis Reeve, 1842
- Truncatella clathrus Lowe, 1932
- Truncatella floridana Hubricht, 1983
- Truncatella pulchella Pfeiffer, 1839
- Truncatella regina Hubricht, 1983
- Truncatella scalaris (Michaud, 1830)
- Truncatella stimpsoni Stearns, 1872
- Truncatella stimpsonii Stearns, 1872
- Truncatella subcylindrica Linnaeus, 1758
- Truncilla cognata (Lea, 1860)
- Truncilla donaciformis (Lea, 1828)
- Truncilla macrodon (Lea, 1859)
- Truncilla truncata Rafinesque, 1820
- Tryonia aequicostata (Pilsbry, 1890)
- Tryonia angulata Hershler and Sada, 1987
- Tryonia brunei Taylor, 1987
- Tryonia cheatumi (Pilsbry, 1935)
- Tryonia circumstriata (Leonard and Ho, 1960)
- Tryonia clathrata Stimpson, 1865
- Tryonia diaboli (Pilsbry and Ferriss, 1906)
- Tryonia elata Hershler and Sada, 1987
- Tryonia ericae Hershler and Sada, 1987
- Tryonia gilae Taylor, 1987
- Tryonia imitator (Pilsbry, 1899)
- Tryonia infernalis Hershler, Liu and Simpson, 2015
- Tryonia margae Hershler, 1989
- Tryonia metcalfi Hershler, Liu and Landye, 2011
- Tryonia monitorae Hershler, 1999
- Tryonia oasiensis Hershler, Liu and Landye, 2011
- Tryonia porrecta (Mighels, 1845)
- Tryonia quitobaquitae Hershler, 1988
- Tryonia rowlandsi Hershler, 1989
- Tryonia salina Hershler, 1989
- Tryonia variegata Hershler and Sada, 1987
- Tulotoma magnifica (Conrad, 1834)
- Turbinella wilsoni Conrad, 1847
- Turbo cailletii P. Fischer and Bernardi, 1856
- Turbo canaliculatus Hermann, 1781
- Turbo castanea Gmelin, 1791
- Turbo fluctuosus Wood, 1828
- Turbo haraldi Robertson, 1957
- Turbo petholatus Linnaeus, 1758
- Turbo sandwicensis Pease, 1861
- Turbonilla abreojensis Dall and Bartsch, 1909
- Turbonilla abrupta
- Turbonilla acra Dall and Bartsch, 1909
- Turbonilla adusta Dall and Bartsch, 1909
- Turbonilla aepynota Dall and Bartsch, 1909
- Turbonilla aequalis (Say, 1827)
- Turbonilla alarconi Strong, 1949
- Turbonilla alaskana Dall and Bartsch, 1909
- Turbonilla alfredi Abbott, 1958
- Turbonilla almejasensis Bartsch, 1917
- Turbonilla almo Dall and Bartsch, 1909
- Turbonilla anira Dall and Bartsch, 1927
- Turbonilla antestriata Dall and Bartsch, 1907
- Turbonilla aragoni Dall and Bartsch, 1909
- Turbonilla aresta Dall and Bartsch, 1909
- Turbonilla aripana Strong, 1949
- Turbonilla asuncionis Strong, 1949
- Turbonilla attrita Dall and Bartsch, 1909
- Turbonilla aurantia (Carpenter, 1864)
- Turbonilla auricoma Dall and Bartsch, 1903
- Turbonilla azteca Baker, Hanna, and Strong, 1928
- Turbonilla baegerti Bartsch, 1917
- Turbonilla bakeri Bartsch, 1912
- Turbonilla barcleyensis Bartsch, 1917
- Turbonilla barkleyensis Bartsch, 1917
- Turbonilla bartolomensis Bartsch, 1917
- Turbonilla belotheca Dall, 1889
- Turbonilla burchi M. Gordon, 1938
- Turbonilla bushiana Verrill, 1882
- Turbonilla buteonis Bartsch, 1909
- Turbonilla buttoni Dall and Bartsch, 1909
- Turbonilla cabrilloi Bartsch, 1917
- Turbonilla callia Dall and Bartsch, 1909
- Turbonilla callimene Bartsch, 1912
- Turbonilla campanellae (Philippi, 1836)
- Turbonilla canadensis Bartsch, 1917
- Turbonilla canfieldi Dall and Bartsch, 1907
- Turbonilla carpenteri Dall and Bartsch, 1909
- Turbonilla castanea (Keep, 1887)
- Turbonilla castanella Dall, 1908
- Turbonilla centrota Dall and Bartsch, 1909
- Turbonilla ceralva Dall and Bartsch, 1909
- Turbonilla chalcana Baker, Hanna, and Strong, 1928
- Turbonilla chocolata (Carpenter, 1864)
- Turbonilla clarinda Bartsch, 1912
- Turbonilla clementina Bartsch, 1927
- Turbonilla cochimana Strong, 1949
- Turbonilla conoma Bartsch In Dall, 1927
- Turbonilla conradi Bush, 1899
- Turbonilla cookeana
- Turbonilla coomansi Van Aartsen, 1994
- Turbonilla cornelliana
- Turbonilla corsoensis Bartsch, 1917
- Turbonilla cortezi Bartsch, 1917
- Turbonilla coyotensis Baker, Hanna, and Strong, 1928
- Turbonilla curta Dall, 1889
- Turbonilla dalli Bush, 1899
- Turbonilla delmontana Bartsch, 1937
- Turbonilla diegensis Dall and Bartsch, 1909
- Turbonilla dinora Bartsch, 1912
- Turbonilla domingana Hertlein and Strong, 1951
- Turbonilla dora Bartsch, 1917
- Turbonilla dracona Bartsch, 1912
- Turbonilla edwardensis Bartsch, 1909
- Turbonilla electra Bartsch In Dall, 1927
- Turbonilla elegantissima
- Turbonilla elegantula A. E. Verrill, 1882
- Turbonilla emertoni Verrill, 1882
- Turbonilla encella Bartsch, 1912
- Turbonilla engbergi Bartsch, 1920
- Turbonilla enna Bartsch, 1927
- Turbonilla eschscholtzi Dall and Bartsch, 1907
- Turbonilla eucosmobasis Dall and Bartsch, 1907
- Turbonilla eva Bartsch, 1917
- Turbonilla excolpa
- Turbonilla exilis (C. B. Adams, 1850)
- Turbonilla eyerdami Bartsch, 1927
- Turbonilla fackenthallae A. G. Smith and M. Gordon, 1948
- Turbonilla franciscana Bartsch, 1917
- Turbonilla francisquitana
- Turbonilla gabbiana (J. G. Cooper, 1867)
- Turbonilla gilli Dall and Bartsch, 1907
- Turbonilla gloriosa Bartsch, 1912
- Turbonilla gonzagensis Baker, Hanna, and Strong, 1928
- Turbonilla grandis Verrill, 1885
- Turbonilla grippi Bartsch, 1912
- Turbonilla guaicurana Strong, 1949
- Turbonilla halibrecta Dall and Bartsch, 1909
- Turbonilla halidoma Dall and Bartsch, 1909
- Turbonilla halistrepta Dall and Bartsch, 1909
- Turbonilla haycocki Dall and Bartsch, 1911
- Turbonilla hecuba Dall and Bartsch, 1913
- Turbonilla hemphilli Bush, 1899
- Turbonilla hespera Bartsch In Dall, 1927
- Turbonilla heterolopha Dall and Bartsch, 1909
- Turbonilla histias Dall and Bartsch, 1909
- Turbonilla hypolispa Dall and Bartsch, 1909
- Turbonilla idothea
- Turbonilla ignacia
- Turbonilla ilfa Bartsch, 1927
- Turbonilla ina Bartsch, 1917
- Turbonilla incisa Bush, 1899
- Turbonilla insularis Dall and Simpson, 1901
- Turbonilla interrupta (Totten, 1835)
- Turbonilla ista Bartsch, 1917
- Turbonilla jewetti Dall and Bartsch, 1909
- Turbonilla johnsoni Baker, Hanna, and Strong, 1928
- Turbonilla juani Bartsch, 1917
- Turbonilla kaliwana Strong, 1949
- Turbonilla kelseyi Dall and Bartsch, 1909
- Turbonilla kincaidi Bartsch, 1921
- Turbonilla kurtzii Mazyck, 1913
- Turbonilla laevis (C. B. Adams, 1850)
- Turbonilla laminata (Carpenter, 1864)
- Turbonilla lamna Bartsch, 1917
- Turbonilla lara Dall and Bartsch, 1909
- Turbonilla larunda Dall and Bartsch, 1909
- Turbonilla lazaroensis Bartsch, 1917
- Turbonilla lepta Dall and Bartsch, 1909
- Turbonilla leta Bartsch In Dall, 1927
- Turbonilla levis (C. B. Adams, 1850)
- Turbonilla lituyana Dall and Bartsch, 1909
- Turbonilla lordi (E. A. Smith, 1880)
- Turbonilla lordii (E. A. Smith, 1880)
- Turbonilla louiseae Clarke, 1954
- Turbonilla lucana Dall and Bartsch, 1909
- Turbonilla lyalli Dall and Bartsch, 1907
- Turbonilla macbridei Dall and Bartsch, 1909
- Turbonilla macouni Dall and Bartsch, 1910
- Turbonilla magdalinensis Bartsch, 1927
- Turbonilla mariana Bartsch, 1917
- Turbonilla marshalli Dall and Bartsch, 1909
- Turbonilla mayana Baker, Hanna, and Strong, 1928
- Turbonilla melea Bartsch In Dall, 1927
- Turbonilla middendorffi Bartsch, 1927
- Turbonilla middendorfi Bartsch, 1927
- Turbonilla mighelsi Bartsch, 1909
- Turbonilla miona Bartsch In Dall, 1927
- Turbonilla mioperplicatulus Sacco, 1892
- Turbonilla morchi Dall and Bartsch, 1907
- Turbonilla multicostata (C. B. Adams, 1850)
- Turbonilla muricatoides Dall and Bartsch, 1907
- Turbonilla myia Bartsch In Dall, 1927
- Turbonilla nahuana Baker, Hanna, and Strong, 1928
- Turbonilla nema Bartsch In Dall, 1927
- Turbonilla nereia Dall and Bartsch, 1909
- Turbonilla newcombei Dall and Bartsch, 1907
- Turbonilla newcombiei Dall and Bartsch, 1907
- Turbonilla nivea (Stimpson, 1851)
- Turbonilla nonica Bartsch In Dall, 1927
- Turbonilla nuttingi Dall and Bartsch, 1909
- Turbonilla obeliscus (C. B. Adams, 1850)
- Turbonilla obesa Dall and Bartsch, 1909
- Turbonilla oregonensis Dall and Bartsch, 1907
- Turbonilla pauli A. G. Smith and M. Gordon, 1958
- Turbonilla penascoencis Lowe, 1935
- Turbonilla pentalopha Dall and Bartsch, 1903
- Turbonilla pequensis Dall and Bartsch, 1909
- Turbonilla pericuana Strong, 1949
- Turbonilla periscelida Dall and Bartsch, 1909
- Turbonilla perlepida A. E. Verrill, 1885
- Turbonilla pesa Dall and Bartsch, 1910
- Turbonilla pluto Dall and Bartsch, 1909
- Turbonilla pocahontasae J. B. Henderson and Bartsch, 1914
- Turbonilla polita (A. E. Verrill, 1872)
- Turbonilla portoricana Dall and Simpson, 1901
- Turbonilla powhatani J. B. Henderson and Bartsch, 1914
- Turbonilla protracta Dall, 1892
- Turbonilla pugetensis Bartsch, 1917
- Turbonilla puncta (C. B. Adams, 1850)
- Turbonilla punicea Dall, 1884
- Turbonilla pupoides D'Orbigny, 1842
- Turbonilla pusilla (C. B. Adams, 1850)
- Turbonilla pyrrha Bartsch In Dall, 1927
- Turbonilla rathbuni A. E. Verrill and S. Smith, 1880
- Turbonilla raymondi Dall and Bartsch, 1909
- Turbonilla recta Dall and Bartsch, 1909
- Turbonilla regina Dall and Bartsch, 1909
- Turbonilla reticulata (C. B. Adams, 1850)
- Turbonilla rhea Bartsch In Dall, 1927
- Turbonilla ridgwayi Dall and Bartsch, 1909
- Turbonilla riisei Morch, 1875
- Turbonilla rinella Dall and Bartsch, 1910
- Turbonilla sanctorum Dall and Bartsch, 1909
- Turbonilla santarosana Dall and Bartsch, 1909
- Turbonilla scammonensis Bartsch, 1912
- Turbonilla schmitti Bartsch, 1917
- Turbonilla sebastiani Bartsch, 1917
- Turbonilla serrae Dall and Bartsch, 1907
- Turbonilla shuyakensis Bartsch, 1927
- Turbonilla signae Dall and Bartsch, 1909
- Turbonilla simpsoni Dall and Bartsch, 1909
- Turbonilla sirena
- Turbonilla stelleri Bartsch, 1927
- Turbonilla stillmani A. G. Smith and M. Gordon, 1948
- Turbonilla stimpsoni Bush, 1899
- Turbonilla striatula
- Turbonilla stricta A. E. Verrill, 1873
- Turbonilla strongi Willett, 1931
- Turbonilla styliformis Morch, 1875
- Turbonilla stylina (Carpenter, 1864)
- Turbonilla subulata (C. B. Adams, 1850)
- Turbonilla sumneri Bartsch, 1909
- Turbonilla superba Dall and Bartsch, 1909
- Turbonilla swani Dall and Bartsch, 1909
- Turbonilla talma Dall and Bartsch, 1910
- Turbonilla taylori Dall and Bartsch, 1907
- Turbonilla tecalo Bartsch, 1917
- Turbonilla tenuicula (Gould, 1853)
- Turbonilla textilis (Kurtz, 1860)
- Turbonilla theona Bartsch In Dall, 1927
- Turbonilla tolteca Baker, Hanna, and Strong, 1928
- Turbonilla torquata (Gould, 1853)
- Turbonilla toyatani J. B. Henderson and Bartsch, 1914
- Turbonilla tremperi Bartsch, 1917
- Turbonilla tridentata (Carpenter, 1864)
- Turbonilla typica Dall and Bartsch In Arnold, 1903
- Turbonilla ulloa Bartsch, 1917
- Turbonilla unilirata Bush, 1899
- Turbonilla valida A. E. Verrill and Bush, 1900
- Turbonilla vancouverensis (Baird, 1863)
- Turbonilla verrilli Bartsch, 1909
- Turbonilla verrillii Bartsch, 1909
- Turbonilla vexativa Dall and Bartsch, 1909
- Turbonilla virga Dall, 1884
- Turbonilla virgata Dall, 1892
- Turbonilla virginica J. B. Henderson and Bartsch, 1914
- Turbonilla virgo (Carpenter, 1864)
- Turbonilla viridaria Dall, 1884
- Turbonilla viscainoi Bartsch, 1917
- Turbonilla vivesi Herlein and Strong, 1951
- Turbonilla weldi Dall and Bartsch, 1909
- Turbonilla whiteavesi Bartsch, 1909
- Turbonilla wickhami Dall and Bartsch, 1909
- Turbonilla willetti A. G. Smith and M. Gordon, 1948
- Turbonilla wrightsvillensis Powell, 1981
- Turbonilla yolettae Hertlein and Strong, 1951
- Turcica admirabilis S. S. Berry, 1969
- Turcica caffea (Gabb, 1865)
- Turcica monilifera (A. Adams, 1854)
- Turrisipho dalli (Friele In Tyron, 1881)
- Turrisipho fenestratus (Turton, 1843)
- Turrisipho lachesis (Morch, 1869)
- Turrisipho moebii (Dunker and Metzger, 1874)
- Turritella acropora Dall, 1889
- Turritella anactor S. S. Berry, 1957
- Turritella clorionensis Hertlein and Strong, 1951
- Turritella communis
- Turritella cooperi Carpenter, 1864
- Turritella exoleta (Linnaeus, 1758)
- Turritella hookeri Reeve, 1849
- Turritella jewetti Carpenter, 1864
- Turritella lentiginosa Reeve, 1849
- Turritella leucostoma Valenciennes, 1832
- Turritella lindae Petuch, 1987
- Turritella mariana Dall, 1908
- Turritella nodulosa King and Broderip, 1832
- Turritella orthosymmetrica S. S. Berry, 1953
- Turritella parkeri J. H. McLean, 1970
- Turritella variegata (Linnaeus, 1758)
- Turritella willetti J. H. McLean, 1970
- Turritella yucatecanum Dall, 1881
- Turritellopsis acicula (Stimpson, 1851)
- Turritellopsis stimpsoni Dall, 1919
- Turtonia minuta (Fabricius, 1780)
- Tylodina americana Dall, 1890
- Tylodina fungina Gabb, 1865
- Tylodinella spongotheras Bertsch, 1980
- Typhinellus sowerbii (Broderip, 1833)
- Typhis sowerbii Broderip, 1833
- Typhlomangelia nivalis (Loven, 1846)
- Udosarx lyrata Webb, 1959
- Umbilibalcis lata (Dall, 1889)
- Umbraculum umbraculum (Lightfoot, 1786)
- Unela nahantensis Doe, 1974
- Unela remanei Er. Marcus, 1953
- Unio abyssinicus Martens, 1866
- Unio bruguierianus Bourguignat, 1853
- Unio caffer Krauss, 1848
- Unio carneus Küster, 1854
- Unio courtillieri Hattemann, 1859
- Unio crassus Philipsson in Retzius, 1788
- Unio damascensis Lea, 1863
- Unio delicatus Lea, 1863
- Unio delphinus Spengler, 1793
- Unio dembeae Reeve, 1865
- Unio durieui Deshayes, 1847
- Unio elongatulus C. Pfeiffer, 1825
- Unio eucirrus Bourguignat, 1857
- Unio foucauldianus Pallary, 1936
- Unio gibbus Spengler, 1793
- Unio hueti Bourguignat, 1855
- Unio ionicus Drouët, 1879
- Unio mancus Lamarck, 1819
- Unio pictorum (Linnaeus, 1758)
- Unio ravoisieri Deshayes, 1847
- Unio sesirmensis Kobelt, 1913
- Unio terminalis Bourguignat, 1852
- Unio tigridis Bourguignat, 1852
- Unio tumidiformis da Silva e Castro, 1885
- Unio tumidus Philipsson in Retzius, 1788
- Uniomerus carolinianus (Bosc, 1801)
- Uniomerus columbensis (Lea, 1857)
- Uniomerus declivis (Say, 1831)
- Uniomerus tetralasmus (Say, 1831)
- Unionetta fabagina (Deshayes & Jullien, 1876)
- Urosalpinx cinerea (Say, 1822)
- Urosalpinx lurida (Middendorff, 1848)
- Urosalpinx macra A. E. Verrill, 1884
- Urosalpinx perrugata (Conrad, 1846)
- Urosalpinx sclera Dall, 1919
- Urosalpinx subangulata (Stearns, 1873)
- Urosalpinx tampaensis (Conrad, 1846)
- Uroteuthis abulati (Adam, 1955)
- Uroteuthis arabica (Ehrenberg, 1831)
- Uroteuthis bartschi Rehder, 1945
- Uroteuthis bengalensis (Jothinayagam, 1987)
- Uroteuthis chinensis (Gray, 1849)
- Uroteuthis duvauceli (D'Orbigny, 1835 in Férussac and D'Orbigny, 1834-1848)
- Uroteuthis edulis (Hoyle, 1885)
- Uroteuthis noctiluca (Lu, Roper and Tait, 1985)
- Uroteuthis pickfordi (Adam, 1954)
- Uroteuthis reesi (Voss, 1962)
- Uroteuthis robsoni (Alexeyev, 1992)
- Uroteuthis sibogae (Adam, 1954)
- Uroteuthis singhalensis (Ortmann, 1891)
- Uroteuthis vossi (Nesis, 1982)
- Utterbackia imbecillis (Say, 1829)
- Utterbackia peggyae (R. I. Johnson, 1965)
- Utterbackia peninsularis Bogan & Hoeh, 1995
- Utterbackiana couperiana (Lea, 1840)
- Utterbackiana hartfieldorum (Williams, Bogan & Garner, 2009)
- Utterbackiana heardi (Gordon & Hoeh, 1995)
- Utterbackiana implicata (Say, 1829)
- Utterbackiana suborbiculata (Say, 1831)
- Vallonia albula Sterki, 1893
- Vallonia costata (Muller, 1774)
- Vallonia cyclophorella Sterki, 1892
- Vallonia excentrica Sterki, 1893
- Vallonia gracilicosta Reinhardt, 1883
- Vallonia parvula Sterki, 1893
- Vallonia perspectiva Sterki, 1893
- Vallonia pulchella (Muller, 1774)
- Vallonia terraenovae Gerber, 1996
- Valvata bicarinata Lea, 1841
- Valvata humeralis Say, 1829
- Valvata lewisi Currier, 1868
- Valvata mergella Westerlund, 1883
- Valvata perdepressa Walker, 1906
- Valvata piscinalis (Muller, 1774)
- Valvata sincera Say, 1824
- Valvata tricarinata (Say, 1817)
- Valvata utahensis Call, 1884
- Valvata virens Tryon, 1863
- Valvata winnebagoensis F. C. Baker, 1928
- Vampyroteuthis infernalis Chun, 1903
- Vanikoro acuta
- Vanikoro cancellata Lamarck, 1822
- Vanikoro imbricata
- Vanikoro oxychone Morch, 1877
- Varicopeza crystallina (Dall, 1881)
- Varicorbula gibba (Olivi, 1792)
- Varicorbula operculata (Philippi, 1848)
- Vasum capitellum (Linnaeus, 1758)
- Vasum cassiforme Kiener, 1841
- Vasum globulus Lamarck, 1816
- Vasum muricatum (Born, 1778)
- Velesunio ambiguus (Philippi, 1847)
- Velesunio angasi (Sowerby, 1867)
- Velesunio moretonicus (Reeve, 1865)
- Velesunio sentaniensis (Haas, 1924)
- Velesunio wilsonii (Lea, 1859)
- Velodona togata Chun, 1915
- Velutina beringensis
- Velutina conica Dall, 1887
- Velutina granulata Dall, 1919
- Velutina laevigata Linnaeus
- Velutina lanata
- Velutina lanigera Moller, 1842
- Velutina nana Bartsch, 1950
- Velutina plicatilis (Muller, 1776)
- Velutina prolongata Carpenter, 1864
- Velutina rubra Willett, 1919
- Velutina undata (T. Brown, 1839)
- Velutina velutina (Muller, 1776)
- Venericardia borealis
- Venericardia tridentata
- Venerupis aurea (Gmelin, 1791)
- Venerupis decussata Linnaeus, 1758
- Venerupis philippinarum (A. Adams and Reeve, 1850)
- Venerupis senegalensis (Gmelin, 1791)
- Ventridens acerra (J. Lewis, 1870)
- Ventridens arcellus Hubricht, 1976
- Ventridens brittsi (Pilsbry, 1892)
- Ventridens cerinoideus (Anthony, 1865)
- Ventridens coelaxis (Pilsbry, 1899)
- Ventridens collisella (Pilsbry, 1896)
- Ventridens decussatus (Walker and Pilsbry, 1902)
- Ventridens demissus (A. Binney, 1843)
- Ventridens eutropis Pilsbry, 1946
- Ventridens gularis (Say, 1822)
- Ventridens intertextus (A. Binney, 1841)
- Ventridens lasmodon (Phillips, 1841)
- Ventridens lawae (W. G. Binney, 1892)
- Ventridens ligera (Say, 1821)
- Ventridens monodon Hubricht, 1964
- Ventridens percallosus (Pilsbry, 1898)
- Ventridens pilsbryi Hubricht, 1964
- Ventridens suppressus (Say, 1829)
- Ventridens theloides (Walker and Pilsbry, 1902)
- Ventridens virginicus (Vanatta, 1936)
- Ventridens volusiae (Pilsbry, 1900)
- Venus fasciata
- Venus gallina
- Venus ovata
- Venus verrucosa Linnaeus
- Venustaconcha constricta (Conrad, 1838)
- Venustaconcha ellipsiformis (Conrad, 1836)
- Venustaconcha pleasii (Marsh, 1891)
- Venustaconcha trabalis (Conrad, 1834)
- Venustaconcha troostensis (Lea, 1834)
- Veprecula brunonia
- Vermetus compactus
- Vermicularia fargoi Olsson, 1951
- Vermicularia fewkesi (Yates, 1890)
- Vermicularia knorrii (Deshayes, 1843)
- Vermicularia radicula (Stimpson, 1851)
- Vermicularia spirata (Philippi, 1836)
- Veronicella sloanii (Cuvier, 1817)
- Verticordia acuticostata Philippi, 1884
- Verticordia fischeriana Dall, 1881
- Verticordia granulata Seguenza, 1876
- Verticordia ornata (d'Orbigny, 1842)
- Verticordia seguenzae Dall, 1886
- Verticordia transversa Locard, 1898
- Verticordia trapezoides Sequenza, 1876
- Verticordia triangularis Locard, 1898
- Verticordia woodii E. A. Smith, 1885
- Vertigo alabamensis G. H. Clapp, 1915
- Vertigo allyniana S. S. Berry, 1919
- Vertigo alpestris Alder, 1838
- Vertigo andrusiana Pilsbry, 1899
- Vertigo arthuri von Martens, 1882
- Vertigo berryi Pilsbry, 1919
- Vertigo binneyana Sterki, 1890
- Vertigo bollesiana (E. S. Morse, 1865)
- Vertigo californica (Rowell, 1861)
- Vertigo clappi Brooks and Hunt, 1936
- Vertigo columbiana (Pilsbry and Vanatta, 1900)
- Vertigo concinnula Cockerell, 1897
- Vertigo conecuhensis G. H. Clapp, 1915
- Vertigo dalliana Sterki, 1890
- Vertigo elatior Sterki, 1894
- Vertigo gouldi (A. Binney, 1843)
- Vertigo hebardi Vanatta, 1912
- Vertigo hinkleyi Pilsbry, 1921
- Vertigo idahoensis Pilsbry, 1934
- Vertigo meramecensis Van Devender, 1979
- Vertigo milium (Gould, 1840)
- Vertigo modesta (Say, 1824)
- Vertigo morsei Sterki, 1894
- Vertigo nylanderi Sterki, 1909
- Vertigo occidentalis Sterki, 1907
- Vertigo oralis Sterki, 1898
- Vertigo oscariana Sterki, 1890
- Vertigo ovata Say, 1822
- Vertigo paradoxa Sterki, 1900
- Vertigo parvula Sterki, 1890
- Vertigo perryi Sterki, 1905
- Vertigo pygmaea (Draparnaud, 1801)
- Vertigo rowelli (Newcomb, 1860)
- Vertigo rugosula Sterki, 1890
- Vertigo sterkii Pilsbry, 1919
- Vertigo teskeyae Hubricht, 1961
- Vertigo tridentata Wolf, 1870
- Vertigo ventricosa (E. S. Morse, 1865)
- Vertigo wheeleri Pilsbry, 1928
- Vesicomya angulata (Dall, 1896)
- Vesicomya atlantica (E. A. Smith, 1885)
- Vesicomya bruuni Filatova, 1969
- Vesicomya caribbea Boss, 1967
- Vesicomya cordata Boss, 1968
- Vesicomya gigas (Dall, 1896)
- Vesicomya leeana (Dall, 1889)
- Vesicomya lepta (Dall, 1896)
- Vesicomya ovalis (Dall, 1896)
- Vesicomya pilula (Dall, 1881)
- Vesicomya smithii Dall, 1889
- Vesicomya stearnsii (Dall, 1895)
- Vesicomya vesica (Dall, 1886)
- Vespericola armiger (Ancey, 1881)
- Vespericola columbianus (I. Lea, 1838)
- Vespericola eritrichius (S. S. Berry, 1939)
- Vespericola haplus (S. S. Berry, 1933)
- Vespericola karakorum Talmadge, 1962
- Vespericola karokorum Talmadge, 1962
- Vespericola klamathicus Roth and W. B. Miller, 1995
- Vespericola marinensis Roth and W. B. Miller, 1993
- Vespericola megasoma (Pilsbry, 1928)
- Vespericola orius (S. S. Berry, 1933)
- Vespericola pilosus (J. Henderson, 1928)
- Vespericola pinicola (S. S. Berry, 1916)
- Vespericola pressleyi Roth, 1985
- Vespericola rothi Cordero and W. B. Miller, 1995
- Vespericola scotti Cordero and W. B. Miller, 1995
- Vespericola shasta (S. S. Berry, 1921)
- Vespericola sierranus (S. S. Berry, 1921)
- Vexillum albocinctum (C. B. Adams, 1845)
- Vexillum bellum
- Vexillum castum
- Vexillum dermestinum (Lamarck, 1811)
- Vexillum epiphaneum (Rehder, 1943)
- Vexillum exiguum (C. B. Adams, 1845)
- Vexillum gemmatum (G. B. Sowerby II, 1874)
- Vexillum hanleyi (Dohrn, 1862)
- Vexillum hendersoni (Dall, 1927)
- Vexillum histrio (Reeve, 1844)
- Vexillum laterculatum (G. B. Sowerby II, 1874)
- Vexillum macrospirum
- Vexillum micra
- Vexillum moisei McGinty, 1955
- Vexillum puella (Reeve, 1845)
- Vexillum pulchellum (Reeve, 1844)
- Vexillum radix
- Vexillum styria (Dall, 1889)
- Vexillum sykesi (Melvill, 1925)
- Vexillum trophonium (Dall, 1889)
- Vexillum unifasciatum
- Vexillum wandoense (Holmes, 1860)
- Vexillum wolfei
- Vexillum zythochroa (Melvill, 1888)
- Vilasina seminuda (Dall, 1897)
- Vilasina vernicosa (Middendorff, 1849)
- Villosa amygdala (Lea, 1843)
- Villosa delumbis (Conrad, 1834)
- Villosa vibex (Conrad, 1834)
- Villosa villosa (B. H. Wright, 1898)
- Virgus beccarianus (Tapparone Canefri, 1883)
- Viridrillia cervina Bartsch, 1943
- Viridrillia hendersoni Bartsch, 1943
- Viridrillia williami Bartsch, 1943
- Vitrea contracta (Westerlund, 1871)
- Vitreledonella alberti Joubin, 1924
- Vitreledonella richardi Joubin, 1918
- Vitreolina arcuata (C. B. Adams, 1850)
- Vitreolina columbiana (Bartsch, 1917)
- Vitreolina macra (Bartsch, 1917)
- Vitreolina yod (Carpenter, 1857)
- Vitricithra marmorata
- Vitricythara elata (Dall, 1889)
- Vitricythara metria (Dall, 1903)
- Vitrina angelicae Beck, 1837
- Vitrina pellucida (Muller, 1774)
- Vitrinella alaskensis Bartsch, 1907
- Vitrinella berryi Bartsch, 1907
- Vitrinella bicaudata Pilsbry and McGinty, 1946
- Vitrinella blakei Rehder, 1944
- Vitrinella carinata (Orbigny, 1842)
- Vitrinella carnifex Dall, 1927
- Vitrinella cerion Dall, 1927
- Vitrinella columbiana Bartsch, 1921
- Vitrinella diaphana (d'Orbigny, 1842)
- Vitrinella elegans Olsson and McGinty, 1958
- Vitrinella eshnaurae Bartsch, 1907
- Vitrinella filifera Pilsbry and McGinty, 1946
- Vitrinella floridana Pilsbry and McGinty, 1946
- Vitrinella georgiana Dall, 1927
- Vitrinella helicoidea C. B. Adams, 1850
- Vitrinella hemphilli Vanatta, 1913
- Vitrinella lucasana (Baker, Hanna and Strong, 1938)
- Vitrinella massarita Dall, 1927
- Vitrinella multistriata (A. E. Verrill, 1884)
- Vitrinella oldroydi Bartsch, 1907
- Vitrinella praecox Pilsbry and McGinty, 1946
- Vitrinella rhyssa Dall, 1927
- Vitrinella smithi Bartsch, 1927
- Vitrinella stearnsi Bartsch, 1907
- Vitrinella terminalis Pilsbry and McGinty, 1946
- Vitrinella texana D. Moore, 1965
- Vitrinella thomasi (Pilsbry, 1945)
- Vitrinella tiburonensis Durham, 1942
- Vitrinella tryoni Bush, 1897
- Vitrinella williamsoni Dall, 1892
- Vitrinizonites latissimus (J. Lewis, 1875)
- Vitrinorbis diegensis (Bartsch, 1907)
- Viviparus georgianus (Lea, 1834)
- Viviparus goodrichi Archer, 1933
- Viviparus intertextus (Say, 1829)
- Viviparus japonicus (Von Martens, 1860)
- Viviparus limi Pilsbry, 1918
- Viviparus malleatus (Reeve, 1863)
- Viviparus subpurpureus (Say, 1829)
- Voluta musica Linnaeus, 1758
- Volutharpa ampullacea (Middendorff, 1848)
- Volutharpa perryi
- Volutomitra alaskana Dall, 1902
- Volutomitra groenlandica (Moller, 1842)
- Volutopsion castaneum (Dall, 1877)
- Volutopsius behringi (Middendorff, 1849)
- Volutopsius castanea (Morch, 1858)
- Volutopsius fragilis (Dall, 1891)
- Volutopsius middendorffii (Dall, 1891)
- Volutopsius norwegicus (Gmelin, 1791)
- Volutopsius pallidus Tiba, 1973
- Volutopsius regularis (Dall, 1873)
- Volutopsius trophonius Dall, 1902
- Volva volva Linnaeus, 1758
- Volvarina albolineata (d'Orbigny, 1842)
- Volvarina avena (Kiener, 1834)
- Volvarina lactea (Kiener, 1841)
- Volvarina subtriplicata (d'Orbigny, 1842)
- Volvarina taeniolata Morch, 1860
- Volvatella bermudae K. B. Clark, 1982
- Volvulella acuminatus Bruguiere, 1792
- Volvulella californica Dall, 1919
- Volvulella catharia Dall, 1919
- Volvulella cylindrica (Carpenter, 1864)
- Volvulella panamica Dall, 1919
- Volvulella paupercula (Watson, 1883)
- Volvulella persimilis (Morch, 1875)
- Volvulella recta (Morch, 1875)
- Volvulella texasiana Harry, 1967
- Vorticifex effusa (Lea, 1856)
- Vorticifex solida (Dall, 1870)
- Vosseledone charrua Palacio, 1978
- Walvisteuthis virilis Nesis and Nikitina, 1986
- Watasenia scintillans (Berry, 1911)
- Webbhelix chadwicki (Ferriss, 1907)
- Webbhelix multilineata (Say, 1821)
- Westralunio albertisi Clench, 1957
- Westralunio carteri Iredale, 1934
- Westralunio flyensis (Tapparone Canefri, 1883)
- Williamia krebsii (Morch, 1877)
- Williamia peltoides (Carpenter, 1864)
- Williamia radiata (Pease, 1861)
- Wirenia argentea Odhner, 1921
- Woodbridgea polystrigma (Dall, 1908)
- Woodbridgea williamsi S. S. Berry, 1953
- Xanthodaphne bruneri (Verrill, 1884)
- Xanthodaphne charcotiana Bouchet and Waren, 1980
- Xenophora caribaea Petit de la Saussaye, 1857
- Xenophora conchyliophora (Born, 1780)
- Xenophora longleyi Bartsch, 1931
- Xerarionta intercisa (W. G. Binney, 1857)
- Xerarionta kelletti (Forbes, 1850)
- Xerarionta kellettii (Forbes, 1850)
- Xerarionta redimita (W. G. Binney, 1858)
- Xerarionta stearnsiana (Gabb, 1868)
- Xerarionta tryoni (Newcomb, 1864)
- Xolotrema caroliniense (I. Lea, 1834)
- Xolotrema denotatum (Ferussac, 1821)
- Xolotrema fosteri (F. C. Baker, 1921)
- Xolotrema obstrictum (Say, 1821)
- Xolotrema occidentale (Pilsbry and Ferriss, 1907)
- Xylophaga abyssorum Dall, 1886
- Xylophaga atlantica Richards, 1942
- Xylophaga dorsalis (Turton, 1819)
- Xylophaga praestans E. A. Smith, 1903
- Xylophaga washingtona Bartsch, 1921
- Xyloredo naceli Turner, 1972
- Xyloredo nooi Turner, 1972
- Yaukthwa avaensis Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020
- Yaukthwa baniensis (Bolotov, Konopleva, Vikhrev, Gofarov, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2020)
- Yaukthwa dalliana (Frierson, 1913)
- Yaukthwa elongatula Bolotov, Konopleva, Vikhrev, Lopes-Lima, Bogan, Lunn, Chan, Win, Aksenova et al., 2019
- Yaukthwa inlenensis Konopleva, Pfeiffer, Vikhrev, Kondakov, Gofarov, Aksenova, Lunn, Chan & Bolotov, 2019
- Yaukthwa nesemanni (Konopleva, Vikhrev & Bolotov in Bolotov et al., 2017)
- Yaukthwa paiensis Konopleva, Pfeiffer, Vikhrev, Kondakov, Gofarov, Aksenova, Lunn, Chan & Bolotov, 2019
- Yaukthwa panhai (Konopleva, Bolotov & Kondakov in Bolotov et al., 2017)
- Yaukthwa peguensis (J. G. Anthony, 1865)
- Yaukthwa rectangularis (Tapparone Canefri, 1889)
- Yaukthwa zayleymanensis (Preston, 1912)
- Yoldia amygdalea Valenciennes, 1846
- Yoldia beringiana Dall, 1916
- Yoldia cooperii Gabb, 1865
- Yoldia excavata
- Yoldia glacialis Gray, 1828
- Yoldia hyperborea (Gould, 1841)
- Yoldia limatula (Say, 1831)
- Yoldia martyria Dall, 1897
- Yoldia micrometrica (Sequenza, 1878)
- Yoldia myalis (Couthouy, 1838)
- Yoldia regularis A. E. Verrill, 1884
- Yoldia sapotilla (Gould, 1841)
- Yoldia scissurata Dall, 1897
- Yoldia secunda Dall, 1916
- Yoldia seminuda Dall, 1871
- Yoldia solenoides Dall, 1881
- Yoldiella cecinella (Dall, 1916)
- Yoldiella curta Verrill and Bush, 1898
- Yoldiella dicella
- Yoldiella dissimilis (A. E. Verrill and Bush, 1898)
- Yoldiella expansa (Jeffreys, 1876)
- Yoldiella fraterna (Verrill and Bush, 1898)
- Yoldiella frigida (Torell, 1859)
- Yoldiella inconspicua (A. E. Verrill and Bush, 1898)
- Yoldiella inflata (Verrill and Bush, 1897)
- Yoldiella insculpta (Jeffreys, 1879)
- Yoldiella intermedia (M. Sars, 1865)
- Yoldiella iris (Verrill and Bush, 1897)
- Yoldiella jeffreysi (Hidalgo, 1877)
- Yoldiella lenticula (Moller, 1842)
- Yoldiella lucida (Loven, 1846)
- Yoldiella nana (M. Sars, 1865)
- Yoldiella oleacina (Dall, 1916)
- Yoldiella orcia (Dall, 1916)
- Yoldiella philippiana (Nyst, 1844)
- Yoldiella profundorum (Melvill and Standen, 1912)
- Yoldiella propinqua (Leche, 1878)
- Yoldiella pusilla (Jeffreys, 1879)
- Yoldiella sanesia (Dall, 1916)
- Yoldiella siliqua (Reeve, 1855)
- Yoldiella striolata (Brugnone, 1876)
- Yoldiella subaequilatera (Jeffreys, 1879)
- Yoldiella subangulata (Verrill and Bush, 1898)
- Zachrysia auricoma (Ferussac, 1821)
- Zachrysia provisoria (Pfeiffer, 1858)
- Zacoleus idahoensis Pilsbry, 1903
- Zafrona idalina (Duclos, 1840)
- Zafrona pulchella (de Blainville, 1829)
- Zafrona taylorae Petuch, 1987
- Zebina browniana (d'Orbigny, 1842)
- Zebina coronata (Mohrenstern, 1860)
- Zebina laevigata (C. B. Adams, 1850)
- Zeidora bigelowi Farfante, 1947
- Zeidora calceolina A. Adams, 1860
- Zeidora flabellum (Dall, 1896)
- Zeidora naufraga Watson, 1883
- Zirfaea crispata (Linnaeus, 1758)
- Zirfaea pilsbryi Lowe, 1931
- Zonaria spadicea (Swainson, 1823)
- Zonites diegoensis Hemphill, 1892
- Zonitoides arboreus (Say, 1816)
- Zonitoides elliotti (Redfield, 1856)
- Zonitoides kirbyi R. W. Fullington, 1974
- Zonitoides lateumbilicatus (Pilsbry, 1895)
- Zonitoides limatulus (A. Binney, 1840)
- Zonitoides nitidus (Muller, 1774)
- Zonitoides patuloides (Pilsbry, 1895)
- Zonulispira sanibelensis (Bartsch and Rehder, 1939)
- Zoogenetes harpa (Say, 1824)
Подврсте
уреди- Abra longicallis americana A. E. Verrill and Bush, 1898
- Abra longicallis longicallis (Scacchi, 1834)
- Acteocina culcitella culcitella (Gould, 1853)
- Acteocina culcitella exima (Baird, 1863)
- Alvania beanii beanii (Hanley, 1844)
- Alvania beanii calathus (Hanley, 1850)
- Amnicola dalli dalli (Pilsbry and Beecher, 1892)
- Amnicola dalli johnsoni Pilsbry, 1899
- Amphitretus pelagicus pelagicus Hoyle, 1885
- Amphitretus pelagicus thielei Robson, 1930
- Anachis avara avara (Say, 1822)
- Anachis avara brasiliana von Martens, 1897
- Anachis coronata coronata (Sowerby, 1832)
- Anachis coronata hannana Hertlein and Strong, 1951
- Anachis obesa obesa (C. B. Adams, 1845)
- Anachis obesa ostreicola Melvill, 1881
- Antalis entale entale (Linnaeus, 1758)
- Antalis entale occidentale (Stimpson, 1851)
- Antalis entale stimpsoni Henderson, 1920
- Antiplanes motojimai aquilonalis Kantor and Sysoev, 1991
- Arcinella arcinella arcinella (Linnaeus, 1767)
- Arcinella arcinella californica (Dall, 1903)
- Argopecten irradians amplicostatus (Dall, 1898)
- Argopecten irradians concentricus (Say, 1822)
- Argopecten irradians irradians (Lamarck, 1819)
- Astarte crenata crenata (Gray, 1824)
- Astarte crenata subequilatera Sowerby, 1854
- Astarte crenata whiteavesii Dall, 1903
- Austrotrophon cerrosensis cerrosensis
- Axinopsida orbiculata inaegualis G. O. Sars, 1878
- Axinopsida orbiculata orbiculata (G. O. Sars, 1878)
- Bathypolypus arcticus arcticus (Prosch, 1847)
- Bathypolypus arcticus proschi Muus, 1962
- Beringius turtoni ossiani (Friele, 1879)
- Beringius turtoni turtoni (Bean, 1834)
- Berryteuthis magister magister (Berry, 1913)
- Berryteuthis magister nipponensis Okutani and Kubodera, 1987
- Bittium asperum asperum Gabb, 1861
- Bittium asperum lomaense Bartsch, 1911
- Bittium eschrichtii eschrichtii (Middendorf, 1849)
- Bittium eschrichtii montereyense Bartsch, 1911
- Bolitaena massyae massyae (Robson, 1924)
- Bolitaena massyae purpurea (Robson, 1930)
- Boreotrophon aculeatus aculeatus
- Boreotrophon aculeatus lacunellus (Dall, 1889)
- Buccinum angulosum angulosum J. E. Gray, 1838
- Buccinum baerii baerii (Middendorff, 1848)
- Buccinum baerii polium Dall, 1907
- Buccinum cyaneum cyaneum Bruguiere, 1792
- Buccinum cyaneum patulum G. O. Sars, 1878
- Buccinum cyaneum perdix Morch, 1868
- Buccinum pemphigus major Dall, 1919
- Buccinum pemphigus orotundum Dall, 1907
- Buccinum pemphigus pemphigus Dall, 1907
- Buccinum strigillatum fucanum Dall, 1907
- Buccinum strigillatum strigillatum Dall, 1891
- Bulla striata striata Bruguiere, 1792
- Bulla striata umbilicata Roding, 1798
- Bursa californica californica (Hinds, 1843)
- Bursa californica sonorana S. S. Berry, 1960
- Bursa corrugata corrugata
- Bursa corrugata ponderosa (Reeve, 1844)
- Bursa granularis cubaniana (d'Orbigny, 1842)
- Bursa granularis granularis Roding, 1798
- Bursa ranelloides ranelloides
- Bursa ranelloides tenuisculpta (Dautzenberg and H. Fischer, 1906)
- Bursa rhodostoma rhodostoma
- Bursa rhodostoma thomae (d'Orbigny, 1842)
- Bursa tenuisculpta natalensis Coelho and Matthews, 1970
- Bursa tenuisculpta tenuisculpta (Dautzenberg and Fischer, 1906)
- Bursatella kachii kachii
- Bursatella kachii pleii
- Bursatella leachii leachi Blainville, 1817
- Bursatella leachii pleii Rang, 1828
- Busycon carica carica (Gmelin, 1791)
- Busycon carica eliceans (Montfort, 1810)
- Busycon perversum perversum (Linnaeus, 1758)
- Cadulus tolmiei newcombei Pilsbry and Sharp, 1898
- Cadulus tolmiei tolmiei (Dall, 1897)
- Caecum crebricinctum barkleyense Bartsch, 1920
- Caecum crebricinctum catalinense Bartsch, 1920
- Caecum crebricinctum crebricinctum (Carpenter, 1864)
- Caecum crebricinctum oregonense Bartsch, 1920
- Caecum crebricinctum pedroense Bartsch, 1920
- Calliostoma bairdi subumbilicatum Dall
- Calliostoma bairdii bairdii A. E. Verrill and S. Smith, 1880
- Calliostoma bairdii hendersoni Dall, 1927
- Calliostoma bairdii oregon Clench and Turner, 1960
- Calliostoma bairdii psyche Dall, 1927
- Calliostoma bairdii rosewateri Clench and Turner, 1960
- Calliostoma jujubinum jujubinum (Gmelin, 1791)
- Calliostoma jujubinum tampaense (Conrad, 1846)
- Calliostoma zizyphinum lyonsii (Leach, 1850)
- Calliostoma zizyphinum zizyphinum (Linnaeus, 1758)
- Cancellaria reticulata reticulata (Linnaeus, 1767)
- Casmaria ponderosa atlantica Clench, 1944
- Casmaria ponderosa ponderosa
- Cassis madagascariensis spinella Clench, 1944
- Cerion chrysalis chrysalis
- Cerion chrysalis fastigatum Maynard, 1896
- Cerion sculptum marielinum Torre, 1927
- Cerion sculptum sculptum
- Cerithidea californica albonodosa Gould and Carpenter, 1857
- Cerithidea californica californica Swainson, 1840
- Cerithidea californica mazatlanica Carpenter, 1856
- Cerithidea costata beattyi Bequaert, 1942
- Cerithidea costata costata (E. M. da Costa, 1778)
- Cerithidea costata turrita Stearns, 1873
- Cerithidea pliculosa pliculosa (Menke, 1829)
- Cerithidea pliculosa veracruzensis Bequaert, 1942
- Cerithiopsis metaxae metaxae Della Chiaje, 1829
- Cerithiopsis metaxae taeniolata Dall, 1889
- Cerithiopsis stejnegeri dina Bartsch, 1911
- Cerithiopsis stejnegeri stejnegeri Dall, 1884
- Cerithiopsis tubercularis floridana Dall, 1892
- Cerithiopsis tuberculatus floridana Dall, 1892
- Cerithiopsis tuberculatus tuberculatus Montagu, 1803
- Cerithium eburneum algicola C. B. Adams, 1845
- Cerithium eburneum eburneum Bruguiere, 1792
- Cerithium litteratum litteratum (Born, 1778)
- Cerithium litteratum semiferruginea Lamarck, 1822
- Cerithium lutosum biminiense Pilsbry and McGinty, 1949
- Cerithium lutosum lutosum Menke, 1828
- Chama sinuosa firma Pilsbry and Mcginty, 1938
- Chama sinuosa sinuosa Broderip, 1835
- Charonia tritonis tritonis Linnaeus, 1758
- Charonia tritonis variegata (Lamarck, 1816)
- Chicoreus florifer florifer
- Chione cancellata cancellata (Linnaeus, 1767)
- Chione cancellata mazycki Dall, 1902
- Chiroteuthis picteti picteti Joubin, 1894
- Chiroteuthis picteti somaliensis Salcedo-Vargas, 1996
- Chiroteuthis veranyi lacertosa Verrill, 1881 in 1880-1881
- Chiroteuthis veranyi veranyi (Férussac, 1834)
- Chlamys circularis aequisculata (Carpenter, 1864)
- Chlamys circularis circularis (Sowerby, 1835)
- Chlamys hastata hastata (Sowerby, 1842)
- Chlamys hastata hericia (Gould, 1850)
- Chlamys hastata pugetensis Oldroyd, 1920
- Chlamys islandica costellatus Verrill and Bush, 1897
- Chlamys islandica insculptus (Verrill, 1897)
- Chlamys islandica islandica (Müller, 1776)
- Chlamys varia nivea (Macgillivray, 1825)
- Chlamys varia varia
- Cingula robusta robusta
- Cipangopaludina chinensis chinensis (Gray, 1834)
- Cipangopaludina chinensis malleata (Reeve, 1863)
- Clio pyramidata antarctica Dall, 1908
- Clio pyramidata convexa (Boas, 1886)
- Clio pyramidata excisa Van Der Spoel, 1963
- Clio pyramidata lanceolata Lesueur, 1813
- Clio pyramidata martensi Pfeffer, 1880
- Clio pyramidata pyramidata Linnaeus, 1767
- Clio pyramidata sulcata (Pfeffer, 1879)
- Codakia orbiculata filiata Dall, 1901
- Codakia orbiculata orbiculata (Montagu, 1808)
- Collisella limatula limatula
- Collisella limatula moerchii Dall
- Colus gracilis frielei (Harmer, 1914)
- Colus gracilis glabra (Verkruzen, 1876)
- Colus gracilis gracilis
- Colus jeffreysianus jeffreysianus
- Colus jeffreysianus marshalli (Iredale, 1918)
- Colus profundicola dispar Verrill, 1884
- Colus profundicola profundicola (Verrill and Smith, 1884)
- Conus diadema diadema Sowerby, 1910
- Conus diadema pemphigus Dall, 1910
- Conus floridanus burryae Clench, 1942
- Conus floridanus floridanus Gabb, 1868
- Conus jaspideus jaspideus Gmelin, 1791
- Conus jaspideus pygmaeus Reeve, 1844
- Conus jaspideus verrucosus Hwass, 1792
- Conus mazei macgintyi Pilsbry, 1955
- Conus princeps apogrammatus Dall, 1910
- Conus princeps lineolata Valenciennes, 1832
- Conus princeps princeps
- Conus sponsalis nux Broderip, 1833
- Conus sponsalis sponsalis
- Conus spurius atlanticus Clench, 1942
- Conus spurius aureofasciatus Rehder and Abbott, 1951
- Conus spurius spurius Gmelin, 1791
- Conus villepinii fosteri Clench and Aguayo, 1942
- Conus villepinii villepinii P. Fischer and Bernardi, 1857
- Crassostrea gigas gigas (Thunberg, 1793)
- Crassostrea gigas kumamoto
- Crassostrea gigas laperousii Schrenck
- Creseis virgula conica (Eschscholtz, 1829)
- Cyathodonta undulata peruviana Olsson, 1961
- Cyathodonta undulata undulata Conrad, 1849
- Cyclocardia spurca beebei Hertlein, 1958
- Cyclocardia spurca spurca Sowerby, 1833
- Cyclocardia ventricosa montereyensis (A. E. Smith and M. Gordan, 1948)
- Cyclocardia ventricosa redondoensis (J. Q. Burch, 1948)
- Cyclocardia ventricosa ventricosa (Gould, 1850)
- Cylichna occulta densistriata (Leche, 1878)
- Cymatium amictum amictum
- Cymatium amictum tremperi Dall, 1907
- Cymatium corrugatum amictum (Reeve, 1844)
- Cymatium corrugatum corrugatum
- Cymatium corrugatum krebsii (Morch, 1877)
- Cymatium moritinctum caribbaeum Clench and Turner, 1957
- Cymatium moritinctum moritinctum (Reeve, 1844)
- Cymatium rubeculum occidentale (Morch, 1877)
- Cymatium rubeculum rebeculum (Linnaeus, 1758)
- Cymatium testudinarium rehderi A. H. Verrill, 1950
- Cymatium testudinarium testudinarium Adams and Reeve, 1848
- Cymatoica orientalis hendersoni Rehder, 1939
- Cymatoica orientalis orientalis (Dall, 1890)
- Cyphoma mcgintyi mcgintyi Pilsbry, 1939
- Cyphoma mcgintyi robustior F. M. Bayer, 1941
- Cypraea mus bicornis Sowerby, 1870
- Cypraea mus tuberculata Gray, 1828
- Cypraea spurca spurca Linnaeus, 1758
- Cypraea zebra dissimilis Schilder, 1924
- Cypraea zebra vallei Juame and Borro, 1946
- Cypraea zebra zebra Linnaeus, 1758
- Dacrydium elegantulum hendersoni Salas and Gofas, 1997
- Delectopecten vitreus abyssorum (M. Sars, 1868)
- Delectopecten vitreus vitreus (Gmelin, 1791)
- Delonovolva aequalis aequalis Sowerby, 1832
- Delonovolva aequalis vidleri (Sowerby, 1881)
- Diaphorodoris luteocincta alba
- Diaphorodoris luteocincta luteocincta (M. Sars, 1870)
- Diplodonta orbella orbella (Gould, 1851)
- Diplodonta rotundata eddystonia (Marshall, 1895)
- Diplodonta rotundata rotundata
- Distorsio constricta constricta Broderip
- Distorsio constricta mcgintyi Emerson and Puffer, 1953
- Donax roemeri protracta Conrad, 1849
- Elimia comalensis comalensis (Pilsbry, 1890)
- Elimia comalensis frontinalis (Pilsbry and Ferriss, 1906)
- Elimia lecontiana excellens (Goodrich, 1935)
- Elimia lecontiana georgiana (Lea, 1862)
- Elimia lecontiana infuscata (Lea, 1862)
- Elimia lecontiana lecontiana (Lea, 1841)
- Elimia lecontiana luteocella (Lea, 1868)
- Elimia lecontiana stearnsiana (Call, 1886)
- Elimia perstriata clathrata (Lea, 1868)
- Elimia perstriata crispa (Lea, 1862)
- Elimia perstriata perstriata (Lea, 1852)
- Elimia potosiensis crandalli (Pilsbry, 1890)
- Elimia potosiensis ozarkensis (Call, 1886)
- Elimia potosiensis plebeius (Anthony, 1850)
- Elimia potosiensis potosiensis (Lea, 1841)
- Enoploteuthis leptura leptura (Leach, 1817)
- Enoploteuthis leptura magnoceani Nesis, 1982
- Ervilia concentrica concentrica (Holmes, 1860)
- Ervilia concentrica rostratula Rehder, 1943
- Eulithidium affine affine (C. B. Adams, 1850)
- Eulithidium affine cruentum (Robertson, 1958)
- Fasciolaria lilium branhamae Rehder and Abbott, 1951
- Fasciolaria lilium hunteria (G. Perry, 1811)
- Fasciolaria lilium lilium G. Fischer, 1807
- Fasciolaria lilium tortugana Hollister, 1957
- Fissurella nodosa crusoe Farfante, 1943
- Fissurella volcano crucifera Dall, 1919
- Fissurella volcano volcano Reeve, 1849
- Fusinus alcimus alcimus (Dall, 1889)
- Fusinus alcimus rushi (Dall, 1889)
- Gaza superba cabana Clench and Aguayo, 1940
- Gaza superba superba Clench and Aguayo, 1940
- Geukensia demissa demissa (Dillwyn, 1817)
- Graneledone verrucosa media (Joubin, 1918)
- Graneledone verrucosa verrucosa (Verrill, 1881)
- Haliotis corrugata corrugata W. Wood, 1828
- Haliotis corrugata oweni Talmadge, 1966
- Haliotis cracherodii californiensis Swainson, 1822
- Haliotis cracherodii cracherodii Leach, 1814
- Haliotis dalli dalli Henderson, 1915
- Haliotis dalli roberti McLean, 1970
- Haliotis discus discus Reeve, 1846
- Haliotis discus hannai Ino, 1953
- Haliotis diversicolor diversicolor Reeve, 1846
- Haliotis diversicolor squamata Reeve, 1846
- Haliotis fulgens fulgens Philippi, 1845
- Haliotis fulgens guadalupensis Talmadge, 1964
- Haliotis fulgens turveri Bartsch, 1942
- Haliotis jacnensis jacnensis Reeve, 1846
- Haliotis jacnensis kershawi Owen in Geiger and Owen, 2012
- Haliotis kamtschatkana assimilis Dall, 1878
- Haliotis kamtschatkana kamtschatkana Jonas, 1845
- Haliotis ovina ovina J.H. Gmelin, 1791
- Haliotis ovina volcanius Patamakanthin & Eng, 2002
- Haliotis pourtalesii aurantium Simone, 1998
- Haliotis pourtalesii pourtalesii Dall, 1881
- Haliotis rubra conicopora Péron, 1816
- Haliotis rubra rubra Leach, 1814
- Haliotis rugosa pustulata Reeve, 1846
- Haliotis rugosa rodriguensis Owen, 2013
- Haliotis rugosa rugosa Lamarck, 1822
- Haliotis scalaris emmae Reeve, 1846
- Haliotis scalaris scalaris (Leach, 1814)
- Haliotis tuberculata coccinea Reeve, 1846
- Haliotis tuberculata fernandesi Owen & Afonso in Geiger and Owen, 2012
- Haliotis tuberculata tuberculata Linnaeus, 1758
- Haliotis virginea crispata A. Gould, 1847
- Haliotis virginea huttoni Filhol, 1880
- Haliotis virginea morioria Powell, 1938
- Haliotis virginea stewartae Jones & Owen, 2004
- Haliotis virginea virginea J.H. Gmelin, 1791
- Heliacus bisulcatus bisulcatus (d'Orbigny, 1842)
- Heliacus bisulcatus mazatlanicus Pilsbry and Lowe, 1932
- Heliacus infundibuliformis perrieri (Rochebrune, 1881)
- Histioteuthis celetaria celetaria (Voss, 1960)
- Histioteuthis celetaria pacifica (Voss, 1962)
- Histioteuthis corona berryi Voss, 1969
- Histioteuthis corona cerasina Nesis, 1971
- Histioteuthis corona corona (Voss and Voss, 1962)
- Histioteuthis corona inermis (Taki, 1964)
- Humboldtiana hoegiana hoegiana
- Humboldtiana hoegiana praesidii Pilsbry, 1939
- Hyalina styria minor Dall, 1927
- Hyalina styria styria Dall, 1889
- Ischnochiton striolatus funiculatus
- Ischnochiton striolatus striolatus
- Juga acutifilosa acutifilosa (Stearns, 1890)
- Juga acutifilosa siskiyouensis (Pilsbry, 1899)
- Lacuna crassior crassior (Montagu, 1803)
- Lacuna crassior glacialis (Moller, 1842)
- Latirus carinifer macgintyi Pilsbry, 1939
- Ledella pustulosa marshalli Allen and Hannah, 1989
- Ledella pustulosa pustulosa (Jeffreys, 1876)
- Lepeta alba alba (Dall, 1869)
- Lepeta alba instabilis (Dall, 1869)
- Lepidochitona dentiens dentiens (Gould, 1846)
- Lepidochitona lowei lowei (Pilsbry, 1918)
- Limacina helicina acuta Van Der Spoel, 1967
- Limacina helicina helicina Phipps, 1774
- Limacina helicina pacifica Dall, 1871
- Lioplax pilsbryi choctawhatchensis Vanatta, 1935
- Lioplax pilsbryi pilsbryi Walker, 1905
- Lithophaga plumula plumula Hanley, 1844
- Littorina angulifera aberrans Philippi, 1846
- Littorina angulifera angulifera (Lamarck, 1822)
- Littorina mespillum mespillum (Muhlfield, 1824)
- Littorina mespillum minima (Wood, 1828)
- Littorina nebulosa nebulosa (Lamarck, 1822)
- Littorina nebulosa tessellata Philippi, 1847
- Littorina obtusata aestuarii Jeffreys, 1865
- Littorina obtusata arctica Moller, 1842
- Littorina obtusata obtusata (Linnaeus, 1758)
- Littorina obtusata palliata Say, 1822
- Littorina saxatilis groenlandica Menke, 1830
- Littorina saxatilis rudis (Maton, 1796)
- Littorina saxatilis saxatilis (Olivi, 1792)
- Littorina saxatilis tenebrosa (Montagu, 1803)
- Littorina scutulata pullata Carpenter, 1864
- Littorina scutulata scutulata Gould, 1849
- Loligo vulgaris reynaudi D'Orbigny, 1839-1841 in Férussac and D'Orbigny, 1834-1848
- Loligo vulgaris vulgaris Lamarck, 1798
- Lottia alveus alveus (Conrad, 1831)
- Lottia alveus parallela (Dall, 1914)
- Lucapina suffusa suffusa (Reeve, 1850)
- Lucapina suffusa tobagoensis Perez-farfante
- Lucapinella limatula hassleri Farfante, 1943
- Lucina nuttalli centrifuga Dall, 1901
- Lucina nuttalli nuttalli (Conrad, 1791)
- Lunatia fringilla fringilla (Dall, 1881)
- Lunatia fringilla perla (Dall, 1889)
- Lyonsia hyalina floridana Conrad, 1849
- Macoma moesta alaskana
- Macoma moesta moesta (Deshayes, 1855)
- Mactromeris polynyma alaskana
- Mactromeris polynyma polynyma (Stimpson, 1860)
- Mangelia acloneta acloneta (Dall, 1889)
- Mangelia acloneta cestrota (Dall, 1889)
- Mangelia quadrata diminuta C. B. Adams, 1850
- Mangelia quadrata eritima Bush, 1885
- Mangelia quadrata quadrata (Reeve, 1845)
- Margarites costalis baxteri J. H. McLean, 1995
- Margarites costalis costalis (Gould, 1841)
- Margarites striatus laevior (Jeffreys, 1865)
- Margarites striatus striatus (Leach, 1819)
- Melanella micrans borealis Bartsch, 1917
- Melanella micrans micrans (Carpenter, 1864)
- Melongena corona corona (Gmelin, 1791)
- Melongena corona johnstonei Clench and Turner, 1956
- Mercenaria mercenaria texana (Dall, 1902)
- Microgaza rotella inornata Quinn, 1979
- Microgaza rotella rotella Dall, 1881
- Microvoluta blakeana blakeana (Dall, 1889)
- Microvoluta blakeana laevior (Dall, 1889)
- Mitra swainsonii antillensis Dall, 1889
- Mitra swainsonii swainsonii Broderip, 1836
- Mitrella amphisella amphisella (Dall, 1881)
- Mitrella amphisella rushi (Dall, 1889)
- Mitrella guttata baileyi Bartsch and Rehder, 1939
- Mitrella guttata guttata Sowerby, 1832
- Modiolus modiolus modiolus (Linnaeus, 1758)
- Modiolus modiolus squamosus Beauperthuy, 1967
- Murex recurvirostris recurvirostris Broderip, 1833
- Murex recurvirostris sallasi Rehder and Abbott, 1951
- Murex recurvirostris woodringi Clench and Farfante, 1945
- Nassarius mendicus mendicus (Gould, 1849)
- Nautilus pompilius pompilius Linnaeus, 1758
- Nautilus pompilius suluensis Habe and Okutani, 1988
- Neilonela pusio pusio (Philippi, 1844)
- Neilonela pusio salicensis (Seguenza, 1877)
- Neosimnia avena avena (G. B. Sowerby II, 1832)
- Neosimnia avena ruthturnerae Cate, 1973
- Neosimnia spelta capitia Cate, 1973
- Neosimnia spelta spelta
- Neptunea communis borealis (Philippi, 1850)
- Neptunea communis clarki Meek, 1923
- Neptunea communis communis (Middendorff, 1849)
- Neptunea communis elongata Loyning, 1932
- Neptunea insularis convexa Golikov, 1963
- Neptunea insularis insularis (Dall, 1895)
- Neptunea lyrata decemcostata (Say, 1826)
- Neptunea lyrata lyrata (Gmelin, 1791)
- Neptunea lyrata turnerae Clarke, 1956
- Neptunea vinosa umbonata (Dall, 1919)
- Neptunea vinosa vinosa (Dall, 1919)
- Octopus fangsiao etchuanus (Sasaki, 1929)
- Octopus fangsiao fangsiao D'Orbigny, 1839-1841 in Férussac and D'Orbigny, 1834-1848
- Octopus minor minor (Sasaki, 1920)
- Octopus minor pardalis (Sasaki, 1929)
- Octopus minor typicus (Sasaki, 1929)
- Odostomia aepynota aepynota Dall and Bartsch, 1909
- Odostomia aepynota planicosta Baker, Hanna, and Strong, 1928
- Odostomia conoidea acutidens Dall, 1844
- Odostomia conoidea conoidea (Brocchi, 1814)
- Odostomia satura gouldi Carpenter, 1865
- Odostomia satura satura Carpenter, 1865
- Oenopota tenuiliratus cymatus (Dall, 1919)
- Oenopota tenuiliratus tenuiliratus
- Oliva bifasciata sunderlandi Petuch, 1987
- Oliva reticularis nivosa Marrat, 1870
- Oliva reticularis reticularis Lamarck, 1810
- Opalia pumilio morchiana (Dall, 1889)
- Opalia pumilio pumilio (Morch, 1874)
- Orobophana baldwini baldwini Ancey, 1904
- Orobophana baldwini lihueensis Neal, 1934
- Orobophana stokesii praemagma Neal, 1934
- Orobophana stokesii stokesii Neal, 1934
- Orobophana uberta beta Pilsbry and Cooke, 1908
- Orobophana uberta borealis Neal, 1934
- Orobophana uberta bryani Neal, 1934
- Orobophana uberta exanima Neal, 1934
- Orobophana uberta hibrida Neal, 1934
- Orobophana uberta lymaniana Pilsbry and Cooke, 1908
- Orobophana uberta magdalenae Ancey, 1890
- Orobophana uberta makuaensis Neal, 1934
- Orobophana uberta nuuanuensis Pilsbry and Cooke, 1908
- Orobophana uberta percitrea Neal, 1934
- Orobophana uberta subtenuis Neal, 1934
- Orobophana uberta uberta Gould, 1847
- Orobophana uberta wilderi Neal, 1934
- Orthalicus reses nesodryas Pilsbry, 1946
- Orthalicus reses reses (Say, 1830)
- Ovatella myosotis myosotis (Draparnaud, 1801)
- Ovatella myosotis ringens (Turton, 1819)
- Oxyloma haydeni haydeni (W. G. Binney, 1858)
- Oxyloma haydeni kanabensis
- Patera clarki clarki (I. Lea, 1858)
- Patera clarki nantahala Clench, 1933
- Petaloconchus erectus erectus (Dall, 1888)
- Petaloconchus erectus mcgintyi Olsson and Harbisson, 1953
- Petaloconchus varians floridana Olsson and Harbison, 1953
- Petaloconchus varians nigricans (Dall, 1884)
- Petaloconchus varians varians (d'Orbigny, 1841)
- Physella gyrina aurea (Lea, 1838)
- Physella gyrina gyrina (Say, 1821)
- Planorbella trivolvis intertextum (Sowerby, 1878)
- Planorbella trivolvis trivolvis (Say, 1817)
- Planorbula armigera armigera (Say, 1821)
- Planorbula armigera wheatleyi (Lea, 1858)
- Pleuropoma kauaiensis kauaiensis Pilsbry and Cooke, 1908
- Pleuropoma kauaiensis orientalis Neal, 1934
- Pleuropoma laciniosa alpha Pilsbry and Cooke, 1908
- Pleuropoma laciniosa bronniana Philippi, 1847
- Pleuropoma laciniosa canyonensis Neal, 1934
- Pleuropoma laciniosa delta Pilsbry and Cooke, 1908
- Pleuropoma laciniosa ferruginea Neal, 1934
- Pleuropoma laciniosa gamma Pilsbry and Cooke, 1908
- Pleuropoma laciniosa globuloidea Neal, 1934
- Pleuropoma laciniosa honokowaiensis Neal, 1934
- Pleuropoma laciniosa kaaensis Neal, 1934
- Pleuropoma laciniosa kickieensis Neal, 1934
- Pleuropoma laciniosa kohoolawensis Neal, 1934
- Pleuropoma laciniosa konaensis Neal, 1934
- Pleuropoma laciniosa kulaensis Neal, 1934
- Pleuropoma laciniosa laciniosa Mighels, 1845
- Pleuropoma laciniosa laula Neal, 1934
- Pleuropoma laciniosa matutina Neal, 1934
- Pleuropoma laciniosa molokaiensis Neal, 1934
- Pleuropoma laciniosa moomomiensis Neal, 1934
- Pleuropoma laciniosa perparva Neal, 1934
- Pleuropoma laciniosa piliformis Neal, 1934
- Pleuropoma laciniosa praeparva Neal, 1934
- Pleuropoma laciniosa pusilla Neal, 1934
- Pleuropoma laciniosa sandwichiensis Souleyet, 1852
- Pleuropoma laciniosa signata Neal, 1934
- Pleuropoma laciniosa spaldingi Neal, 1934
- Pleuropoma oahuensis gemina Neal, 1934
- Pleuropoma oahuensis oahuensis Pilsbry and Cooke, 1908
- Pleuropoma rotelloidea knudseni Pilsbry and Cooke, 1908
- Pleuropoma rotelloidea makalii Neal, 1934
- Pleuropoma rotelloidea mauiensis Neal, 1934
- Pleuropoma rotelloidea rotelloidea Nighels, 1845
- Pleuropoma rotelloidea sola Neal, 1934
- Pleurotomella tornata malmii Dall, 1889
- Pleurotomella tornata tornata (Verrill, 1884)
- Pneumoderma violaceum pacificum Dall, 1871
- Pneumoderma violaceum violaceum (d'Orbigny, 1836)
- Polygyra plana bahamensis Vanatta, 1919
- Polygyra plana plana
- Proterato gemma pygmaea Schilder, 1933
- Prunum virginianum hartleyanum (Schwengel, 1941)
- Prunum virginianum virginianum Conrad, 1868
- Psammotreta cognata clarki (Durham, 1950)
- Psammotreta cognata cognata (Pilsbry and Vanatta, 1902)
- Pseudodon vondembuschianus tapienica (Konopleva et al., 2023)
- Pseudodon vondembuschianus thasaenica (Konopleva et al., 2023)
- Pseudodon vondembuschianus vondembuschianus (Lea, 1840)
- Pseudoliomesus ooides canaliculatus (Dall, 1874)
- Pseudoliomesus ooides ooides (Middendorff, 1848)
- Pterygioteuthis giardi giardi Fischer, 1896
- Pterygioteuthis giardi hoylei (Pfeffer, 1912)
- Retusa obtusa lajonkaireana (Basterot, 1825)
- Retusa obtusa obtusa (Montagu, 1803)
- Retusa obtusa turrita Moler, 1842
- Retusa umbilicata nitidula (Montagu, 1803)
- Retusa umbilicata umbilicata (Montagu, 1803)
- Rictaxis punctocaelatus coronadoensis Stearns, 1898
- Rictaxis punctocaelatus punctocaelatus (Carpenter, 1864)
- Rictaxis punctocaelatus vancouverensis Oldroyd, 1927
- Rissoa lilacina lilacina Recluz, 1843
- Rissoa lilacina rufilabrum Alder, 1844
- Rissoa membranacea cornea (Loven, 1846)
- Rissoa membranacea gracilis (Forbes and Hanley, 1850)
- Rissoa membranacea membranacea
- Rissoa membranacea octona (Nilsson, 1822)
- Rossia pacifica diegensis Berry, 1912
- Rossia pacifica pacifica Berry, 1911
- Scaphella dubia dubia (Broderip, 1827)
- Scaphella dubia ethelae (Pilsbry and Olsson, 1953)
- Scaphella dubia georgiana (Clench, 1946)
- Scaphella dubia neptunia Clench and Aguayo, 1940
- Scaphella dubia schmitti (Bartsch, 1931)
- Scaphella gouldiana atlantis Clench, 1946
- Scaphella gouldiana bermudezi (Clench and Aguayo, 1940)
- Scaphella gouldiana cuba Clench, 1940
- Scaphella gouldiana florida (Clench and Aguayo, 1940)
- Scaphella gouldiana gouldiana (Dall, 1887)
- Scaphella gouldiana marionae Pilsbry and Olsson, 1953
- Scaphella gouldiana robusta (Dall, 1889)
- Scaphella junonia butleri Clench, 1953
- Scaphella junonia johnstoneae Clench, 1953
- Scaphella junonia junonia (Lamarck, 1804)
- Seguenzia monocingulata monocingulata Sequenza, 1876
- Seguenzia monocingulata nitidi Verrill, 1894
- Simnia aequalis aequalis Sowerby, 1832
- Simnia aequalis vidleri (Sowerby, 1881)
- Spisula solidissima similis (Say, 1822)
- Spisula solidissima solidissima (Dillwyn, 1817)
- Splendrillia moseri brunnescens Rehder, 1943
- Splendrillia moseri moseri (Dall, 1889)
- Sterkia eyriesii eyriesii (Drouet, 1859)
- Sterkia eyriesii rhoadsi (Pilsbry, 1899)
- Stramonita haemastoma canaliculata (J. E. Gray, 1839)
- Stramonita haemastoma floridana (Conrad, 1837)
- Stramonita haemastoma haemastoma (Linnaeus, 1758)
- Taranis cirrata cirrata (Brugnone, 1862)
- Taranis cirrata tornatus Verrill, 1884
- Tarebia granifera granifera (Lamarck, 1822)
- Tarebia granifera mauiensis Brot, 1877
- Taringa aivica aivica Marcus and Marcus, 1967
- Taringa aivica timia Ev. Marcus and Er. Marcus, 1967
- Taringa telopia disa Ev. Marcus and Er. Marcus, 1967
- Taringa telopia telopia Marcus, 1955
- Teinostoma amplectans americanum Pilsbry and Olsson, 1945
- Teinostoma amplectans amplectans Carpenter, 1857
- Teinostoma supravallatum invallatum (Carpenter, 1864)
- Teinostoma supravallatum supravallatum (Carpenter, 1864)
- Tellina alternata alternata Sowerby, 1867
- Tellina alternata tayloriana Sowerby, 1867
- Tellina bodegensis bodegensis Hinds, 1845
- Tellina bodegensis santarosae Dall, 1900
- Terebra protexta limatula Dall, 1889
- Terebra protexta protexta (Conrad, 1845)
- Thyasira equalis alba Verrill and Bush, 1898
- Thyasira equalis equalis A. E. Verrill and Bush, 1898
- Thyasira flexuosa flexuosa (Montagu, 1803)
- Thyasira flexuosa sarsii Philippi, 1845
- Todarodes pacificus pacificus (Steenstrup, 1880)
- Todarodes pacificus pusillus Dunning, 1988
- Tremoctopus violaceus gracilis Souleyet, 1852
- Tremoctopus violaceus violaceus Chiaie, 1830 in 1823-1831
- Tricolia affinis affinis (C. B. Adams, 1850)
- Tricolia affinis pterocladia Robertson, 1958
- Tritonia bayeri bayeri Ev. Marcus and Er. Marcus, 1967
- Tritonia bayeri misa Ev. Marcus and Er. Marcus, 1967
- Trivia pediculus pediculus (Linnaeus, 1758)
- Trivia pediculus pullata Sowerby, 1870
- Trophon cerrosensis catalinensis Oldroyd, 1927
- Trophon cerrosensis cerrosensis Dall, 1891
- Truncatella pulchella bilabiata Pfeiffer, 1839
- Truncatella pulchella pulchella Pfeiffer, 1839
- Truncatella scalaris clathrus Lowe, 1832
- Truncatella scalaris piratica Clench and Turner, 1948
- Truncatella scalaris scalaris (Michaud, 1830)
- Turbo castanea crenulatus Gmelin, 1791
- Turbonilla bushiana abyssicola Bartsch, 1909
- Turbonilla bushiana bushiana Gordon, 1938
- Turbonilla elegantula branfordensis Bartsch, 1909
- Turbonilla elegantula elegantula A. E. Verrill, 1882
- Turbonilla gilli delmontensis Dall and Bartsch, 1907
- Turbonilla gilli gilli Dall and Bartsch, 1907
- Turbonilla incisa constricta Bush, 1899
- Turbonilla incisa incisa Bush, 1899
- Velodona togata capensis Robson, 1924
- Velodona togata togata Chun, 1915
- Venus gallina gallina
- Venus gallina striatula
- Volva volva striata (Lamarck, 1810)
- Volva volva volva
- Volvarina avena avena (Kiener, 1834)
- Volvarina avena beyerleana (Bernardi, 1883)
- Volvarina taeniolata rosa (Schwengel, 1938)
- Volvarina taeniolata taeniolata Morch, 1860
Референце
уреди- ^ а б в г Chapman, A.D. (2009). Numbers of Living Species in Australia and the World, 2nd edition. Australian Biological Resources Study, Canberra. Приступљено 12 January. 2010. ISBN 978-0-642-56860-1. (printed). ISBN 978-0-642-56861-8. (online).
- ^ Little, L.; Fowler, H.W.; Coulson, J.; Onions, C.T., ур. (1964). „Malacology”. Shorter Oxford English Dictionary. Oxford University press.
- ^ Chisholm, Hugh, ур. (1911). „Molluscoida”. Encyclopædia Britannica (на језику: енглески). 18 (11 изд.). Cambridge University Press. стр. 675.
- ^ Hogan, C. Michael (2010). „Calcium”. Ур.: Jorgensen, A.; Cleveland, C. Encyclopedia of Earth. National Council for Science and the Environment.
- ^ а б Giribet, G.; Okusu, A, A.; Lindgren, A.R., A. R.; Huff, S.W., S. W.; Schrödl, M, M.; Nishiguchi, M.K., M. K. (2006). „Evidence for a clade composed of molluscs with serially repeated structures: monoplacophorans are related to chitons” (Free full text). Proceedings of the National Academy of Sciences of the United States of America. 103 (20): 7723—7728. Bibcode:2006PNAS..103.7723G. PMC 1472512 . PMID 16675549. doi:10.1073/pnas.0602578103.
- ^ Hayward, PJ (1996). Handbook of the Marine Fauna of North-West Europe. Oxford University Press. стр. 484—628. ISBN 978-0-19-854055-7.
- ^ а б в Brusca, R. C. & Brusca, G. J. (2003). Invertebrates (2 изд.). Sinauer Associates. стр. 702. ISBN 978-0-87893-097-5.
- ^ а б Ruppert, pp. 284–291
- ^ Ruppert, стр. 291–292
- ^ Ruppert, стр. 292–298
- ^ Ruppert, стр. 298–300
- ^ Ruppert, стр. 300–343
- ^ Ruppert, стр. 343–367
- ^ Ruppert, стр. 367–403
- ^ Ruppert, стр. 403–407
- ^ а б в Ponder, W.F.; Lindberg, D.R., ур. (2008). Phylogeny and Evolution of the Mollusca. Berkeley: University of California Press. стр. 481. ISBN 978-0-520-25092-5.
- ^ Nicol, David (1969). „The Number of Living Species of Molluscs”. Systematic Zoology. 18 (2): 251—254. doi:10.2307/2412618.
- ^ Haszprunar, G. (2001). „Mollusca (Molluscs)”. Encyclopedia of Life Sciences. John Wiley & Sons, Ltd. doi:10.1038/npg.els.0001598.
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- ^ Ruppert, Front endpaper 1
- ^ Ponder, Winston F. & Lindberg, David R. (2004). „Phylogeny of the Molluscs”. World Congress of Malacology. Приступљено 9. 3. 2009.
- ^ Raup, David M. & Stanley, Steven M. (1978). Principles of Paleontology (2 изд.). W.H. Freeman and Co. стр. 4-5. ISBN 978-0-7167-0022-7.
- ^ Barnes, R.S.K.; Calow, P.; Olive, P.J.W.; Golding, D. W.; Spicer, J. I. (2001). The Invertebrates, A Synthesis (3 изд.). UK: Blackwell Science.
- ^ Kubodera, T.; Mori, K. (2005). „First-ever observations of a live giant squid in the wild” (PDF). Proceedings of the Royal Society B. 272 (1581): 2583—2586. PMC 1559985 . PMID 16321779. doi:10.1098/rspb.2005.3158. Архивирано из оригинала (PDF) 3. 6. 2016. г. Приступљено 22. 10. 2008.
- ^ Black, Richard (26. 4. 2008). „Colossal squid out of the freezer”. BBC News. Приступљено 1. 10. 2008.
- ^ Lydeard, C.; R. Cowie, R.; Ponder, W. F.; et al. (2004). „The global decline of nonmarine mollusks” (PDF). BioScience. 54 (4): 321—330. doi:10.1641/0006-3568(2004)054[0321:TGDONM]2.0.CO;2. Архивирано из оригинала (PDF) 31. 3. 2007. г.
Литература
уреди- Little, L.; Fowler, H.W.; Coulson, J.; Onions, C.T., ур. (1964). „Malacology”. Shorter Oxford English Dictionary. Oxford University press.
- Догељ, В, А: Зоологија бескичмењака, Научна књига, Београд, 1971.
- Крунић, М: Зоологија инвертебрата 1, Научна књига, Београд, 1977.
- Крунић, М: Зоологија инвертебрата 2, Научна књига, Београд
- Маричек, магдалена, Ћурчић, Б, Радовић, И: Специјална зоологија, Научна књига, Београд, 1986.
- Матоничкин, И, Хабдија, И, Примц - Хабдија, Б: Бескраљешњаци - биологија нижих авертебрата, Школска књига, Загреб, 1998.
- Marcon, E, Mongini, M: Све животиње света, ИРО Вук Караџић, Београд, 1986.
- Петров, И: Сакупљање, препаровање и чување инсеката у збиркама, Биолошки факултет, Београд, 2000.
- Радовић, И, Петров, Бригита: Разноврсност живота 1 - структура и функција, Биолошки факултет Београд и Stylos Нови Сад, Београд, 2001.
- Ruppert, E. E.; Fox, R. S.; Barnes, R. D. (2004). Invertebrate Zoology (7 изд.). Brooks / Cole. ISBN 978-0-03-025982-1.
Спољашње везе
уреди- Mollusc Mollusk Mollusks 1999
- Bioscolos
- Researchers complete mollusk evolutionary tree; 26 October 2011
- Hardy's Internet Guide to Marine Gastropods
- Rotterdam Natural History Museum Shell Image Gallery
- Mussel Watch Programme
- Online biomonitoring of bivalve activity, 24/7: MolluSCAN eye Архивирано на сајту Wayback Machine (13. новембар 2016)