Most of the working checklist below of mollusc species is based on Pollock (1998), which reported them as occurring between Cape Cod and Newfoundland.
Please send corrections and updates to info@vfthomas.com. Photographs are welcome. Thank you.
| Class | Order | Family | Genus | Specific Epithet | authority | common name | Sources (full citations given after this table) |
| Polyplacophora | ? | Lepidopleuridae | Hanleya | mendicaria | (Mighels & Adams) | ? | Procter (1933, p. 177.) |
| Polyplacophora | ? | Ischnochitonidae | Stenosemus | albus | (L.) | northern white chiton | Procter (1933, p. 178., as Trachydermon albus) |
| Polyplacophora | ? | Ischnochitonidae | Tonicella | marmorea | (Fabricius) | mottled red chiton | Procter (1933, p. 178.) |
| Polyplacophora | ? | Ischnochitonidae | Tonicella | rubra | (L.) | northern red chiton | Procter (1933, p. 178., as Trachydermon ruber) |
| Gastropoda | ? | Amnicolidae | Paludestrina | minuta | (Totten) | ? | Procter (1933, p. 201.) |
| Gastropoda | ? | Philinidae | Philine | lima | (Brown) | ? | Procter (1933, p. 210.) |
| Gastropoda | ? | Rissoidae | Cingula | arenaria | Mighels & Adams | ? | Procter (1933, p. 201.) |
| Gastropoda | ? | Rissoidae | Cingula | areolata | (Stimpson) | ? | Procter (1933, p. 201.) |
| Gastropoda | ? | Rissoidae | Cingula | carinata | Mighels & Adams | ? | Procter (1933, p. 201.) |
| Gastropoda | ? | Rissoidae | Cingula | castanea | (Moller) | ? | Procter (1933, p. 201.) |
| Gastropoda | ? | Rissoidae | Onora | aculeus | (Gould) | ? | Procter (1933, p. 202.) |
| Gastropoda | ? | Scaphandridae | Diaphana | debilis | (Gould) | ? | Procter (1933, p. 209.) |
| Gastropoda | ? | Scaphandridae | Cylichna | alba | (Brown) | ? | Procter (1933, p. 210.) |
| Gastropoda | ? | Tornatinidae | Retusa | pertenus | (Mighels) | ? | Procter (1933, p. 209.) |
| Gastropoda | ? | Tornatinidae | Retusa | gouldii | (Couthouy) | ? | Procter (1933, p. 209.) |
| Gastropoda | ? | Turritidae | Bela | bicarinata var. violacea) | (Mighels & Adams) | ? | Procter (1933, p. 208.) |
| Gastropoda | ? | Turritidae | Bela | blaneyi | Bush | ? | Procter (1933, p. 209.) |
| Gastropoda | ? | Turritidae | Bela | cancellata | (Mighels & Adams) | ? | Procter (1933, p. 208.) |
| Gastropoda | ? | Turritidae | Bela | decussata | (Couthouy) | ? | Procter (1933, p. 208.) |
| Gastropoda | ? | Turritidae | Bela | exarata | (MÖller) | ? | Procter (1933, p. 209.) |
| Gastropoda | ? | Turritidae | Bela | harpularia | (Couthouy) | ? | Procter (1933, p. 208.) |
| Gastropoda | ? | Turritidae | Bela | incisula | Verrill | ? | Procter (1933, p. 208.) |
| Gastropoda | ? | Turritidae | Bela | nobilis | (MÖller) | ? | Procter (1933, p. 208.) |
| Gastropoda | ? | Turritidae | Bela | harpularia | (Couthouy) | ? | Procter (1933, p. 208.) |
| Gastropoda | Archaeogastropoda | Calliostomatidae | Calliostoma | bairdii | A. E. Verrill & S. Smith | Baird topsnail | Pollock (1998, p. 130.) |
| Gastropoda | Archaeogastropoda | Calliostomatidae | Calliostoma | occidentale | (Mighels & C. B. Adams) | boreal topsnail | Procter (1933, p. 197.) |
| Gastropoda | Archaeogastropoda | Fissurellidae | Puncturella | noachina | (L.) | diluvian puncturella | Procter (1933, p. 195., as Puncturella princeps) |
| Gastropoda | Archaeogastropoda | Trochidae | Lischkeia | ottoi | (Philippi) | otto spiny topsnail | Pollock (1998, p. 130.) |
| Gastropoda | Archaeogastropoda | Trochidae | Lischkeia | regularis | ? | spiny topsnail | Pollock (1998, p. 130.) |
| Gastropoda | Archaeogastropoda | Trochidae | Margarites | cinerea | (Couthouy) | ? | Procter (1933, p. 196.) |
| Gastropoda | Archaeogastropoda | Trochidae | Margarites | costalis | (Gould) | boreal rosy margarite | Pollock (1998, p. 130.) |
| Gastropoda | Archaeogastropoda | Trochidae | Margarites | groenlandicus | (Gmelin) | Greenland margarite | Procter (1933, p. 196., as Margarites groenlandica) |
| Gastropoda | Archaeogastropoda | Trochidae | Margarites | helicinus | (Phipps) | spiral margarite | Procter (1933, p. 196., as Margarites helicina) |
| Gastropoda | Archaeogastropoda | Trochidae | Margarites | olivacea | (Brown) | ? | Procter (1933, p. 196.) |
| Gastropoda | Archaeogastropoda | Trochidae | Molleria | costulata | (MÖller) | ? | Procter (1933, p. 196.) |
| Gastropoda | Archaeogastropoda | Trochidae | Solariella | obscura | (Couthouy) | obscure solarelle | Procter (1933, p. 196.) |
| Gastropoda | Archaeopulmonata | Ellobiidae | Leucophytia | bidentata | ? | eastern melampus, salt marsh pulmonate | Pollock (1998, p. 125.) |
| Gastropoda | Archaeopulmonata | Ellobiidae | Phytia | myosotis | Say | mouse melampus | Pollock (1998, p. 125.) |
| Gastropoda | Cephalaspidea | Cylichnidae | Scaphander | punctostriatus | (Mighels & C. B. Adams) | giant canoe-bubble | Pollock (1998, p. 117.) |
| Gastropoda | Cephalaspidea | Cylichnidae | Acteocina | canaliculata | (Say) | channeled barrel-bubble | Pollock (1998, p. 116.) |
| Gastropoda | Gymnosomata | Clionidae | Clione | limacina | (Phipps) | naked sea butterfly | Pollock (1998, p. 132.) |
| Gastropoda | Heterostropha | Mathildidae | Turritellopsis | acicula | (Stimpson) | needle turretsnail | Procter (1933, p. 203.) |
| Gastropoda | Heterostropha | Pyramidellidae | Cremula | eburnea | (Stimpson) | ? | Procter (1933, p. 197.) |
| Gastropoda | Heterostropha | Pyramidellidae | Couthouyella | striatula | (Couthouy) | ? | Procter (1933, p. 197.) |
| Gastropoda | Heterostropha | Pyramidellidae | Odostomia | modesta | (Stimpson) | ? | Pollock (1998, p. 129.) |
| Gastropoda | Heterostropha | Pyramidellidae | Pyramidella | spp. | ? | ? | Pollock (1998, p. 129.) |
| Gastropoda | Heterostropha | Pyramidellidae | Turbonilla | spp. | ? | ? | Pollock (1998, p. 129.) |
| Gastropoda | Neogastropoda | Buccinidae | Buccinum | scalariforme | Moller | ladder whelk | Pollock (1998, p. 118.) |
| Gastropoda | Neogastropoda | Buccinidae | Buccinum | totteni | Stimpson | thin whelk | Pollock (1998, p. 118.) |
| Gastropoda | Neogastropoda | Buccinidae | Buccinum | undatum | L. | waved whelk | Procter (1933, p. 206.) |
| Gastropoda | Neogastropoda | Buccinidae | Colus | pubescens | (A. E. Verrill) | hairy whelk | Pollock (1998, p. 118.) |
| Gastropoda | Neogastropoda | Buccinidae | Colus | pygmaeus | (Gould) | pygmy whelk | Procter (1933, p. 207.) |
| Gastropoda | Neogastropoda | Buccinidae | Colus | stimpsoni | (Mørch) | Stimpson whelk | Procter (1933, p. 207.) |
| Gastropoda | Neogastropoda | Buccinidae | Colus | terraenovae | Bouchet & Warren | ventricose whelk | Pollock (1998, p. 118., as Colus ventricosus) |
| Gastropoda | Neogastropoda | Buccinidae | Neptunea | decemcostata | (Say) | ? | Procter (1933, p. 206.) |
| Gastropoda | Neogastropoda | Buccinidae | Neptunea | despecta | (L.) | disreputable whelk | Pollock (1998, p. 118.) |
| Gastropoda | Neogastropoda | Buccinidae | Neptunea | lyrata ssp. ? | (Gmelin) | wrinkle whelk | Pollock (1998, p. 118.) |
| Gastropoda | Neogastropoda | Buccinidae | Volutopsius | norwegicus | (Gmelin) | Norway whelk | Pollock (1998, p. 118., as Volutopsius norvegicus) |
| Gastropoda | Neogastropoda | Cancellariidae | Admete | couthouyi | (Jay) | northern admete | Procter (1933, p. 207.) |
| Gastropoda | Neogastropoda | Columbellidae | Columbella | dissimilis | Stimpson | ? | Procter (1933, p. 205.) |
| Gastropoda | Neogastropoda | Columbellidae | Astyris | lunata | (Say) | lunar dovesnail | Pollock (1998, p. 121.) |
| Gastropoda | Neogastropoda | Columbellidae | Astyris | rosacea | (Gould) | rosy northern dovesnail | Procter (1933, p. 205., as Columbella rosacea) |
| Gastropoda | Neogastropoda | Conidae | Pyrgocythara | plicosa | (C. B. Adams) | plicate mangelia | Pollock (1998, p. 131.) |
| Gastropoda | Neogastropoda | Muricidae | Boreotrophon | clathratus | (L.) | clathrate trophon | Pollock (1998, p. 126.) |
| Gastropoda | Neogastropoda | Muricidae | Boreotrophon | craticulatum | ? | latticed trophon | Pollock (1998, p. 126.) |
| Gastropoda | Neogastropoda | Muricidae | Boreotrophon | truncatus | (Strom) | bobtail trophon | Procter (1933, p. 204., as Trophon truncatus) |
| Gastropoda | Neogastropoda | Muricidae | Nucella | lapillus | (L.) | Atlantic dogwinkle | Procter (1933, p. 205., as Thais lapillus); Champlainer (TFV) |
| Gastropoda | Neogastropoda | Nassariidae | Nassarius | obsoletus | (Say) | eastern mudsnail | Pollock (1998, p. 127., as Ilyanassa obsoleta) |
| Gastropoda | Neogastropoda | Nassariidae | Nassarius | trivittatus | (Say) | threeline mudsnail | Procter (1933, p. 205., as Alectrion trivittata) |
| Gastropoda | Neogastropoda | Volutomitridae | Volutomitra | groenlandica | (Moller) | false Greenland miter | Pollock (1998, p. 132.) |
| Gastropoda | Neotaenioglossa | Aporrhaididae | Aporrhais | occidentalis | Beck | American pelicanfoot | Procter (1933, p. 204.) |
| Gastropoda | Neotaenioglossa | Calyptraeidae | Crepidula | convexa | Say | convex slippersnail | Procter (1933, p. 200., as Crepidula glauca) |
| Gastropoda | Neotaenioglossa | Calyptraeidae | Crepidula | fornicata | (L.) | common Atlantic slippersnail | Procter (1933, p. 200.); Champlainer (TFV) |
| Gastropoda | Neotaenioglosa | Calyptraeidae | Crepidula | plana | Say | eastern white slippersnail | Pollock (1998, p. 119.) |
| Gastropoda | Neotaenioglossa | Calyptraeidae | Crucibulum | striatum | Say | striate cup-and-saucer | Procter (1933, p. 200.) |
| Gastropoda | Neotaenioglossa | Cerithiidae | Bittium | alternatum | (Say) | alternate bittium | Pollock (1998, p. 120.) |
| Gastropoda | Neotaenioglossa | Epitoniidae | Acirsa | borealis | (Lyell) | chalky wentletrap | Pollock (1998, p. 122., as Acirsa borealis and Acirsa costulata) |
| Gastropoda | Neotaenioglossa | Epitoniidae | Boreoscala | greenlandica | (G. Perry) | Greenland wentletrap | Pollock (1998, p. 122.) |
| Gastropoda | Neotaenioglossa | Epitoniidae | Epitonium | greenlandicum | (Perry) | ? | Procter (1933, p. 198.) |
| Gastropoda | Neotaenioglossa | Hydrobiidae | Hydrobia | totteni | Morrison | minute hydrobia | Pollock (1998, p. 123.) |
| Gastropoda | Neotaenioglossa | Lamellariidae | Lamellaria | perspicua | (L.) | transparent lamellaria | Pollock (1998, p. 123.) |
| Gastropoda | Neotaenioglossa | Littorinidae | Lacuna | vincta [var. vincta?] | (Montagu) | northern lacuna | Procter (1933, p. 203.) |
| Gastropoda | Neotaenioglossa | Littorinidae | Lacuna | vincta var. fusca | (Montagu) / (Gould) | northern lacuna | Procter (1933, p. 203.) |
| Gastropoda | Neotaenioglossa | Littorinidae | Littorina | littorea | (L.) | common periwinkle | Procter (1933, p. 202.); Champlainer (TFV) |
| Gastropoda | Neotaenioglossa | Littorinidae | Littorina | obtusata | (L.) | yellow periwinkle, smooth periwinkle | Procter (1933, p. 202., as Littorina obtusata palliata); Champlainer (TFV) |
| Gastropoda | Neotaenioglossa | Littorinidae | Littorina | rudis [var. rudis?] | (Donovan) | ? | Procter (1933, p. 202.) |
| Gastropoda | Neotaenioglossa | Littorinidae | Littorina | rudis var. tenebrosa | (Donovan) / (Montagu) | ? | Procter (1933, p. 202.) |
| Gastropoda | Neotaenioglossa | Littorinidae | Littorina | saxatilis | (Olivi) | rough periwinkle | Pollock (1998, p. 124.) |
| Gastropoda | Neotaenioglossa | Naticidae | Amauropsis | islandica | (Gmelin) | Iceland moonsnail | Procter (1933, p. 199.) |
| Gastropoda | Neotaenioglossa | Naticidae | Bulbus | smithii | (Brown) | ? | Pollock (1998, p. 128.) |
| Gastropoda | Neotaenioglossa | Naticidae | Cryptonatica | affinis | (Gmelin) | Arctic moonsnail | Procter (1933, p. 198., as Natica clausa) |
| Gastropoda | Neotaenioglossa | Naticidae | Polinices | groenlandica | (MÖller) | ? | Procter (1933, p. 199.) |
| Gastropoda | Neotaenioglossa | Naticidae | Euspira | heros | (Say) | northern moonsnail | Procter (1933, p. 198., as Polinices heros) |
| Gastropoda | Neotaenioglossa | Naticidae | Euspira | immaculata | (Totten) | northern moonsnail | Procter (1933, p. 199., as Polinices immaculata) |
| Gastropoda | Neotaenioglossa | Naticidae | Euspira | triseriata | (Say) | spotted moonsnail | Pollock (1998, p. 128.) |
| Gastropoda | Neotaenioglossa | Skeneopsidae | Skeneopsis | planorbis | (Fabricius) | flat skenea, orbsnail | Procter (1933, p. 202., as Skenea planorbis) |
| Gastropoda | Neotaenioglossa | Trichotropidae | Trichotropis | borealis | Broderip & G. B. Sowerby I | boreal hairysnail | Procter (1933, p. 203.) |
| Gastropoda | Neotaenioglossa | Turritellidae | Tachyrhynchus | erosus | (Couthouy) | eroded turretsnail | Procter (1933, p. 203., as Turritella erosa) |
| Gastropoda | Neotaenioglossa | Velutinidae | Velutina | undata | (T. Brown) | wavy lamellaria | Procter (1933, p. 199.) |
| Gastropoda | Neotaenioglossa | Velutinidae | Velutina | velutina | (Muller) | smooth lamellaria | Procter (1933, p. 199., as Velutina laevigata) |
| Gastropoda | Nudibranchia | Aeolidiidae | Aeolidia | papillosa | (L.) | shag-rug aeolis, maned nudibranch | Procter (1933, p. 210.) |
| Gastropoda | Nudibranchia | Chromodorididae | Cadlina | leavis | (L.) | white Atlantic cadlina | Pollock (1998, p. 140.) |
| Gastropoda | Nudibranchia | Coryphellidae | Coryphella | rufibranchialis [var. rufibranchialis?] | (Stimpson) | ? | Procter (1933, p. 211.) |
| Gastropoda | Nudibranchia | Coryphellidae | Coryphella | rufibranchialis var. mananensis | (Stimpson) | ? | Procter (1933, p. 211.) |
| Gastropoda | Nudibranchia | Dendronotidae | Dendronotus | frondosus | (Ascanius) | frond-aeolis | Procter (1933, p. 212.) |
| Gastropoda | Nudibranchia | Dendronotidae | Dendronotus | robustus | A. E. Verrill | robust frond-aeolis | Pollock (1998, p. 134.) |
| Gastropoda | Nudibranchia | Dotoidae | Doto | coronata | (Gmelin) | crown doto | Procter (1933, p. 211.) |
| Gastropoda | Nudibranchia | Eubranchidae | Eubranchus | exiguus | (Alder & Hancock) | (dwarf) balloon aeolis | Pollock (1998, p. 137.) |
| Gastropoda | Nudibranchia | Eubranchidae | Eubranchus | pallidus | (Alder & Hancock) | club-gilled nudibranch | Pollock (1998, p. 137.) |
| Gastropoda | Nudibranchia | Facelinidae | Cratena | pilata | (Gould) | striped nudibranch | Pollock (1998, p. 135.) |
| Gastropoda | Nudibranchia | Facelinidae | Facelina | bostonensis | (Couthouy) | Boston facelina | Pollock (1998, p. 136.) |
| Gastropoda | Nudibranchia | Flabellinidae | Flabellina | gracilis | (Alder & Hancock) | ? | Pollock (1998, p. 136.) |
| Gastropoda | Nudibranchia | Flabellinidae | Flabellina | pellucida | (Alder & Hancock) | pellucid aeolis | Pollock (1998, p. 137.) |
| Gastropoda | Nudibranchia | Flabellinidae | Flabellina | salmonacea | (Couthouy) | salmon aeolis | Pollock (1998, p. 137.) |
| Gastropoda | Nudibranchia | Flabellinidae | Flabellina | verrucosa | (M. Sars) | red-finger aeolis | Pollock (1998, p. 137.) |
| Gastropoda | Nudibranchia | Goniodorididae | Ancula | gibbosa | (Risso) | Atlantic ancula | Pollock (1998, p. 139.) |
| Gastropoda | Nudibranchia | Goniodorididae | Lamellidoris | aspera | (Alder & Hancock) | ? | Procter (1933, p. 212.) |
| Gastropoda | Nudibranchia | Onchidorididae | Acanthodoris | pilosa | (Abildgaard) | hairy spiny doris | Pollock (1998, p. 140.) |
| Gastropoda | Nudibranchia | Onchidorididae | Adalaria | proxima | (Alder & Hancock) | (yellow) false doris | Pollock (1998, p. 140.) |
| Gastropoda | Nudibranchia | Onchidorididae | Onchidoris | bilamellata | (L.) | barnacle-eating onchidoris | Procter (1933, p. 212., as Lamellidoris bilamellata) |
| Gastropoda | Nudibranchia | Onchidorididae | Onchidoris | muricata | (Muller) | fuzzy onchidoris | Pollock (1998, p. 140.) |
| Gastropoda | Nudibranchia | Polyceridae | Polycera | dubia | (M. Sars) | ridged sea slug | Pollock (1998, p. 139.) |
| Gastropoda | Nudibranchia | Tergipedidae | Catriona | gymnota | (Couthouy) | orange-tip cuthona | Pollock (1998, p. 136.) |
| Gastropoda | Nudibranchia | Tergipedidae | Cuthona | concinna | (Alder & Hancock) | ? | Pollock (1998, p. 136.) |
| Gastropoda | Nudibranchia | Tergipedidae | Tenellia | fuscata | (Gould) | ? | Pollock (1998, p. 138) |
| Gastropoda | Nudibranchia | Tergipedidae | Tergipes | tergipes | (Forskal) | ? | Pollock (1998, p. 137.) |
| Gastropoda | Aspidobranchia | Lepetidae | Lepeta | caeca | (Müller) | ? | Procter (1933, p. 195.) |
| Gastropoda | Patellogastropoda | Lottiidae | Acmaea | alveus | (Conrad) | ? | Procter (1933, p. 195.) |
| Gastropoda | Patellogastropoda | Lottiidae | Tectura | testudinalis | (Muller) | tortoiseshell limpet, plant limpet | Procter (1933, p. 195., as Acmaea testudinalis); Champlainer (TFV) |
| Gastropoda | Sarcoglossa | Elysiidae | Elysia | chlorotica | Gould | emerald elysia | Pollock (1998, p. 135.) |
| Gastropoda | Sarcoglossa | Stiligeridae | Ercolania | nigra [?] | ? | dusky stiliger | Pollock (1998, p. 138.) |
| Gastropoda | Scaphopoda | Dentaliidae | Antalis | entale var. occidentale | (Stimpson) | occidental tuskshell | Procter (1933, p. 194., as Dentalium occidentale) |
| Gastropoda | Scaphopoda | Dentaliidae | Antalis | entale var. stimpsoni | Henderson | Stimpson tuskshell | Pollock (1998, p. 133.) |
| Gastropoda | Scaphopoda | Dentaliidae | Dentalium | entalis | L. | ? | Procter (1933, p. 194.) |
| Gastropoda | Thecosomata | Cavoliniidae | Cavolinia | uncinata | (Rang) | uncinate cavoline | Pollock (1998, p. 132.) |
| Gastropoda | Thecosomata | Cavoliniidae | Clio | pyramidata | L. | pyramid clio | Pollock (1998, p. 132.) |
| Gastropoda | Thecosomata | Cavoliniidae | Cuvierina | columnella | (Rang) | cigar pteropod | Pollock (1998, p. 132.) |
| Gastropoda | Thecosomata | Cavoliniidae | Diacria | trispinosa | (de Blainville) | three-spine cavoline | Pollock (1998, p. 132.) |
| Bivalvia | Myoida | Hiatellidae | Cyrtodaria | siliqua | (Spengler) | northern propellerclam | Pollock (1998, p. 154.) |
| Bivalvia | Myoida | Hiatellidae | Hiatella | arctica | (L.) | Arctic hiatella | Pollock (1998, p. 154.) |
| Bivalvia | Myoida | Hiatellidae | Panomya | norvegica | (Spengler) | Arctic roughmya | Procter (1933, p. 193., as Panomya arctica) |
| Bivalvia | Myoida | Myidae | Mya | arenaria | L. | softshell (clam) | Procter (1933, p. 193.); Champlainer (TFV) |
| Bivalvia | Myoida | Myidae | Mya | truncata | L. | truncate softshell | Procter (1933, p. 193.) |
| Bivalvia | Myoida | Pholadidae | Pholas | dactylus | L. | European piddock | Pollock (1998, p. 162.) |
| Bivalvia | Myoida | Pholadidae | Zirfaea | crispata | (L.) | Atlantic great piddock | Pollock (1998, p. 162.) |
| Bivalvia | ? | Saxicavidae | Saxicava | arctica | (L.) | ? | Procter (1933, p. 193.) |
| Bivalvia | Mytiloida | Mytilidae | Crenella | decussata | (Montagn) | ? | Procter (1933, p. 183.) |
| Bivalvia | Mytiloida | Mytilidae | Crenella | glandula | (Totten) | glandular crenella | Procter (1933, p. 183.) |
| Bivalvia | Mytiloida | Mytilidae | Geukensia | demissa | (Dillwyn) | ribbed mussel | Pollock (1998, p. 157.) |
| Bivalvia | Mytiloida | Mytilidae | Modiolus | modiolus | (L.) | northern horsemussel | Procter (1933, p. 182.); Champlainer (TFV) |
| Bivalvia | Mytiloida | Mytilidae | Musculus | corrugatus | (Stimpson) | ? | Procter (1933, p. 183.) |
| Bivalvia | Mytiloida | Mytilidae | Musculus | discors | (L.) | discordant mussel | Procter (1933, p. 183., as Musculus substriatus) |
| Bivalvia | Mytiloida | Mytilidae | Musculus | niger | (J. E. Gray) | black mussel | Procter (1933, p. 183., as Musculus nigra) |
| Bivalvia | Mytiloida | Mytilidae | Mytilus | edulis | L. | blue mussel | Procter (1933, p. 182.); Champlainer (TFV) |
| Bivalvia | Nuculoida | Nuculanidae | Nuculana | tenuisulcata | (Couthouy) | thin nutclam | Procter (1933, p. 179., as Leda tenuisulcata) |
| Bivalvia | Nuculoida | Nuculidae | Ennucula | tenuis | (Montagu) | smooth nutclam | Procter (1933, p. 179., as Nucula tenuis) |
| Bivalvia | Nuculoida | Nuculidae | Nucula | delphinodonta | Mighels & C. B. Adams | dolphintooth nutclam | Procter (1933, p. 179.) |
| Bivalvia | Nuculoida | Nuculidae | Nucula | proxima | Say | Atlantic nutclam | Procter (1933, p. 179.) |
| Bivalvia | Nuculoida | Yoldiidae | Megayoldia | thraciaeformis | (Storer) | broad yoldia | Procter (1933, p. 180., as Yoldia thraciaeformis) |
| Bivalvia | Nuculoida | Yoldiidae | Yoldia | amygdalea | Valenciennes | almond yoldia | Pollock (1998, p. 158.) |
| Bivalvia | Nuculoida | Yoldiidae | Yoldia | limatula | (Say) | file yoldia | Procter (1933, p. 180.) |
| Bivalvia | Nuculoida | Yoldiidae | Yoldia | myalis | (Couthouy) | oval yoldia | Procter (1933, p. 180.) |
| Bivalvia | Nuculoida | Yoldiidae | Yoldia | sapotilla | (Gould) | short yoldia | Procter (1933, p. 180.) |
| Bivalvia | Ostreoida | Anomiidae | Anomia | aculeata | (Müller) | ? | Procter (1933, p. 181.) |
| Bivalvia | Ostreoida | Anomiidae | Anomia | simplex | (D'Orbigny) | common jingle | Procter (1933, p. 182.) |
| Bivalvia | Ostreoida | Anomiidae | Anomia | squamula | L. | prickly jingle | Pollock (1998, p. 150.) |
| Bivalvia | Ostreoida | Ostreidae | Crassostrea | virginica | (Gmelin) | eastern oyster | Pollock (1998, p. 160.) |
| Bivalvia | Ostreoida | Pectinidae | Argopecten | irradians | (Lamarck) | bay scallop | Pollock (1998, p. 160.) |
| Bivalvia | Ostreoida | Pectinidae | Chlamys | islandica | Müller | Iceland scallop | Procter (1933, p. 181., as Pecten islandicus) |
| Bivalvia | Ostreoida | Pectinidae | Placopecten | magellanicus | (Gmelin) | sea scallop | Procter (1933, p. 181., as Pecten magellanicus) |
| Bivalvia | Pholadomyoida | Cuspidariidae | Cuspidaria | glacialis | (G. O. Sars) | glacial dipperclam | Pollock (1998, p. 153.) |
| Bivalvia | Pholadomyoida | Cuspidariidae | Cuspidaria | rostrata | (Spengler) | rostrate dipperclam | Pollock (1998, p. 153.) |
| Bivalvia | Pholadomyoida | Lyonsiidae | Lyonsia | arenosa | (MÖller) | sandy lyonsia | Procter (1933, p. 185.) |
| Bivalvia | Pholadomyoida | Lyonsiidae | Lyonsia | hyalina | Conrad | glassy lyonsia | Procter (1933, p. 185.) |
| Bivalvia | Pholadomyoida | Pandoridae | Pandora | gouldiana | Dall | Gould pandora | Procter (1933, p. 185.) |
| Bivalvia | Pholadomyoida | Periplomatidae | Periploma | fragilis | Totten | ? | Procter (1933, p. 184.) |
| Bivalvia | Pholadomyoida | Periplomatidae | Periploma | leanum | (Conrad) | Lea spoonclam | Pollock (1998, p. 161.) |
| Bivalvia | Pholadomyoida | Thraciidae | Thracia | conradi | Couthouy | Conrad thracia | Procter (1933, p. 184.) |
| Bivalvia | Pholadomyoida | Thraciidae | Thracia | myopsis | MÖller | ? | Procter (1933, p. 184.) |
| Bivalvia | Pholadomyoida | Thraciidae | Thracia | truncata | Mighels & Adams | ? | Procter (1933, p. 184.) |
| Bivalvia | Solemyoida | Solemyidae | Solemya | borealis | Totten | boreal awningclam | Pollock (1998, p. 163.) |
| Bivalvia | Solemyoida | Solemyidae | Solemya | velum | Say | Atlantic awningclam | Pollock (1998, p. 163.) |
| Bivalvia | Veneroida | Arcticidae | Arctica | islandica | (L.) | ocean quahog | Procter (1933, p. 185., as Cyprina islandica) |
| Bivalvia | Veneroida | Astartidae | Astarte | borealis | (Schumacher) | boreal tridonta | Procter (1933, p. 187.) |
| Bivalvia | Veneroida | Astartidae | Astarte | castanea | (Say) | smooth astarte | Procter (1933, p. 187.) |
| Bivalvia | Veneroida | Astartidae | Astarte | crenata ssp. subequilatera | (Gray) / Sowerby | lentil astarte | Procter (1933, p. 187., as Astarte subaequilatera) |
| Bivalvia | Veneroida | Astartidae | Astarte | montagui | (Dillwyn) | Montagu tridonta | Pollock (1998, p. 151., as Tridonta montagui) |
| Bivalvia | Veneroida | Astartidae | Astarte | portlandica | Mighels | ? | Procter (1933, p. 186.) |
| Bivalvia | Veneroida | Astartidae | Astarte | quadrans | Gould | ? | Procter (1933, p. 187.) |
| Bivalvia | Veneroida | Astartidae | Astarte | striata | Leach | ? | Procter (1933, p. 188.) |
| Bivalvia | Veneroida | Astartidae | Astarte | undata | Gould | wavy astarte | Procter (1933, p. 186.) |
| Bivalvia | Veneroida | Cardiidae | Cerastoderma | pinnulatum | (Conrad) | northern dwarf cockle | Procter (1933, p. 190., as Cardium pinnulatum) |
| Bivalvia | Veneroida | Cardiidae | Clinocardium | ciliatum | (Fabricius) | hairy cockle | Procter (1933, p. 190., as Cardium ciliatum) |
| Bivalvia | Veneroida | Cardiidae | Serripes | groenlandicus | (Mohr) | Greenland cockle | Procter (1933, p. 191.) |
| Bivalvia | Veneroida | Carditidae | Cyclocardia | novangliae | (E. S. Morse) | ? | Procter (1933, p. 188., as Venericardia novangliae) |
| Bivalvia | Veneroida | Carditidae | Venericardia | borealis | ? | northern cyclocardia | Procter (1933, p. 188.) |
| Bivalvia | Veneroida | Lucinidae | Lucinoma | filosa | (Stimpson) | northeast lucina | Pollock (1998, p. 155.) |
| Bivalvia | Veneroida | Mactridae | Mulinia | lateralis | (Say) | dwarf surfclam | Pollock (1998, p. 155.) |
| Bivalvia | Veneroida | Mactridae | Spisula | solidissima | (Dillwyn) | Atlantic surfclam | Procter (1933, p. 192.) |
| Bivalvia | Veneroida | Mesodesmatidae | Mesodesma | arctatum | (Conrad) | Arctic wedgeclam | Pollock (1998, p. 156.) |
| Bivalvia | Veneroida | Petricolidae | Petricola | pholadiformis | (Lamarck) | false angelwing | Pollock (1998, p. 162., as Petricola pholadiformis) |
| Bivalvia | Veneroida | Pharidae | Ensis | directus | Conrad | Atlantic jackknife | Procter (1933, p. 192.) |
| Bivalvia | Veneroida | Pharidae | Siliqua | costata | Say | Atlantic razor | Pollock (1998, p. 163.) |
| Bivalvia | Veneroida | Semelidae | Cumingia | tellinoides | (Conrad) | tellin semele | Pollock (1998, p. 162.) |
| Bivalvia | Veneroida | Tellinidae | Macoma | balthica | (L.) | Baltic macoma | Procter (1933, p. 191.) |
| Bivalvia | Veneroida | Tellinidae | Macoma | calcarea | (Gmelin) | chalky macoma | Procter (1933, p. 192.) |
| Bivalvia | Veneroida | Tellinidae | Macoma | tenta | (Say) | elongate macoma | Pollock (1998, p. 164.) |
| Bivalvia | Veneroida | Tellinidae | Tellina | agilis | Stimpson | northern dwarf tellin | Pollock (1998, p. 164.) |
| Bivalvia | Veneroida | Thyasiridae | Axinopsida | orbiculata | (G. O. Sars) | orbicular axinopsid | Procter (1933, p. 189.) |
| Bivalvia | Veneroida | Thyasiridae | Thyasira | gouldii | (Philippi) | ? | Procter (1933, p. 189.) |
| Bivalvia | Veneroida | Thyasiridae | Thyasira | plana | (Verrill & Bush) | ? | Procter (1933, p. 189.) |
| Bivalvia | Veneroida | Thyasiridae | Thyasira | trisinuata | (d'Orbigny) | Atlantic cleftclam | Pollock (1998, p. 165.) |
| Bivalvia | Veneroida | Turtoniidae | Turtonia | minuta | (Fabricius) | minute turton | Procter (1933, p. 190.) |
| Bivalvia | Veneroida | Veneridae | Gemma | gemma | Deshayes | amethyst gemclam | Pollock (1998, p. 165.) |
| Bivalvia | Veneroida | Veneridae | Liocyma | fluctuosa | (Gould) | ? | Procter (1933, p. 191.) |
| Bivalvia | Veneroida | Veneridae | Mercenaria | mercenaria | (L.) | northern quahog | Procter (1933, p. 191., as Venus mercenaria) |
| Bivalvia | Veneroida | Veneridae | Pitar | morrhuanus | (Linsley) | false quahog | Pollock (1998, p. 165.) |
| Cephalopoda | Octopoda | Octopodidae | Bathypolypus | arcticus | (Prosch) | spoonarm octopus | Procter (1933, p. 213., as Polypus arcticus) |
| Cephalopoda | Sepiolida | Sepiolidae | Semirossia | tenera | (Verrill) | ? | Pollock (1998, p. 167.) |
| Cephalopoda | Teuthida | Ommastrephidae | Illex | illecebrosus | (Lesueur) | northern shortfin squid | Pollock (1998, p. 166.) |
