Girdle around shell valves with up to 20 tufts of bristles on either side
Step 482
Girdle without tufts of bristles (may have spines, however)
Step 483
10 possible taxa remaining show scientific names show common names
506 taxa excluded
show scientific names
show common names
- Abra alba
- Abra longicallus
- Abra nitida
- Abra prismatica
- Abra tenuis
- Acanthocardia echinata
- Acanthocardia tuberculata
- Acanthodoris pilosa
- Aclis minor
- Aclis walleri
- Acmaea virginea
- Acteon tornatilis
- Adalaria proxima
- Aegires punctilucens
- Aeolidia papillosa
- Aeolidiella glauca
- Aequipecten opercularis
- Akera bullata
- Alderia modesta
- Aldisa zetlandica
- Alloteuthis media
- Alloteuthis subulata
- Alvania abyssicola
- Alvania beani
- Alvania cimicoides
- Alvania jeffreysi
- Alvania lactea
- Alvania punctura
- Alvania subsoluta
- Amauropsis islandica
- Ammonicera rota
- Anatoma crispata
- Ancula gibbosa
- Anomia ephippium
- Ansates pellucida
- Aplysia punctata
- Aporrhais pespelecani
- Aporrhais serresianus
- Arca nodulosa
- Arca tetragona
- Archidoris pseudoargus
- Arcopagia balaustina
- Arcopagia crassa
- Arctica islandica
- Armina loveni
- Asperspina brambelli
- Assiminea grayana
- Astarte borealis
- Astarte elliptica
- Astarte montagui
- Astarte sulcata
- Atrina pectinata
- Auriculinella erosa
- Bankia fimbriatula
- Barleeia unifasciata
- Barnea candida
- Barnea parva
- Bathyarca pectunculoides
- Bela brachystoma
- Bela nebula
- Beringius turtoni
- Berthella plumula
- Bittium reticulatum
- Brachioteuthis riisei
- Buccinum humphreysianum
- Buccinum hydrophanum
- Buccinum undatum
- Cadlina laevis
- Cadulus subfusiformis
- Caecum clarkii
- Caecum glabrum
- Caecum trachea
- Calliopaea bellula
- Calliostoma occidentale
- Calliostoma zizyphinum
- Calyptraea chinensis
- Capulus ungaricus
- Cardiomya costellata
- Cerastoderma edule
- Cerastoderma lamarcki
- Cerithiella metula
- Cerithiopsis tubercularis
- Chaetoderma nitidulum
- Chamelea striatula
- Charonia lampas
- Cheirodonta pallescens
- Chlamys sulcata
- Chlamys varia
- Chrysallida indistincta
- Chrysallida interstincta
- Chrysallida nivosa
- Chrysallida pellucida
- Chrysallida sarsi
- Cima minima
- Cingula trifasciata
- Circulus striatus
- Clausinella fasciata
- Clelandella miliaris
- Cochlodesma praetenue
- Colpodaspis pusillus
- Colus gracilis
- Colus islandicus
- Colus jeffreysianus
- Comarmondia gracilis
- Corambe obscura
- Corbula gibba
- Coryphella browni
- Coryphella gracilis
- Coryphella lineata
- Coryphella pedata
- Coryphella pellucida
- Coryphella verrucosa
- Crassadoma pusio
- Crassostrea gigas
- Crassostrea virginica
- Crenella decussata
- Crepidula fornicata
- Crisilla semistriata
- Cuspidaria cuspidata
- Cuspidaria obesa
- Cuspidaria rostrata
- Cuthona amoena
- Cuthona caerulea
- Cuthona concinna
- Cuthona foliata
- Cuthona gymnota
- Cuthona nana
- Cuthona pustulata
- Cuthona rubescens
- Cuthona viridis
- Cylichna cylindracea
- Dendronotus frondosus
- Dentalium entalis
- Dentalium vulgare
- Devonia perrieri
- Diaphana minuta
- Dikoleps pusilla
- Diodora graeca
- Diplodonta rotundata
- Donax vittatus
- Dosinia exoleta
- Dosinia lupina
- Doto coronata
- Doto cuspidata
- Doto dunnei
- Doto fragilis
- Doto millbayana
- Doto pinnatifida
- Doto tuberculata
- Ebala nitidissima
- Eledone cirrhosa
- Elysia viridis
- Emarginula crassa
- Emarginula fissura
- Emarginula rosea
- Embletonia pulchra
- Ensis americanus
- Ensis arcuatus
- Ensis ensis
- Ensis minor
- Ensis siliqua
- Epilepton clarkiae
- Epitonium clathratulum
- Epitonium clathrus
- Epitonium trevelyanum
- Epitonium turtonis
- Erato voluta
- Eubranchus cingulatus
- Eubranchus doriae
- Eubranchus exiguus
- Eubranchus farrani
- Eubranchus pallidus
- Eubranchus tricolor
- Eubranchus vittatus
- Eulima bilineata
- Eulima glabra
- Eulimella acicula
- Eulimella scillae
- Eulimella ventricosa
- Euspira catena
- Euspira fusca
- Euspira montagui
- Euspira pallida
- Euspira pulchella
- Facelina bostoniensis
- Facelina coronata
- Falcidens crossotus
- Favorinus blianus
- Favorinus branchialis
- Galiteuthis armata
- Gari costulata
- Gari depressa
- Gari fervensis
- Gari tellinella
- Geitodoris planata
- Gibbula cineraria
- Gibbula magus
- Gibbula pennanti
- Gibbula tumida
- Gibbula umbilicalis
- Glycymeris glycymeris
- Gonatus fabricii
- Goniodoris castanea
- Goniodoris nodosa
- Goodallia triangularis
- Gouldia minima
- Graphis albida
- Haliella stenostoma
- Haliotis tuberculata
- Hemilepton nitidum
- Hermaea bifida
- Hero formosa
- Heteranomia squamula
- Hiatella arctica
- Hyala vitrea
- Hyalopecten similis
- Hydrobia neglecta
- Hydrobia ulvae
- Idas simpsoni
- Illex coindetii
- Iothia fulva
- Irus irus
- Janolus cristatus
- Janolus hyalinus
- Jorunna tomentosa
- Jujubinus exasperatus
- Jujubinus montagui
- Jujubinus striatus
- Kellia suborbicularis
- Lacuna crassior
- Lacuna pallidula
- Lacuna parva
- Lacuna vincta
- Laevicardium crassum
- Lamellaria latens
- Lamellaria perspicua
- Lasaea rubra
- Lepeta caeca
- Lepton squamosum
- Limacia clavigera
- Limapontia capitata
- Limapontia depressa
- Limapontia senestra
- Limaria hians
- Limatula gwyni
- Limatula subauriculata
- Limea loscombi
- Liomesus ovum
- Littorina arcana
- Littorina fabalis
- Littorina littorea
- Littorina neglecta
- Littorina nigrolineata
- Littorina obtusata
- Littorina saxatilis
- Loligo forbesi
- Loligo vulgaris
- Lomanotus genei
- Lomanotus marmoratus
- Loripes lacteus
- Lucinella divaricata
- Lucinoma borealis
- Lutraria angustior
- Lutraria lutraria
- Lyonsia norwegica
- Macoma balthica
- Macoma calcarea
- Mactra stultorum
- Mangelia attenuata
- Mangelia coarctata
- Mangelia smithii
- Manzonia crassa
- Margarites groenlandicus
- Margarites helicinus
- Marshallora adversa
- Melanella alba
- Melanella lubrica
- Melanella monterosatoi
- Melaraphe neritoides
- Mercenaria mercenaria
- Mercuria confusa
- Microhedyle lactea
- Modiolarca subpicta
- Modiolula phaseolina
- Modiolus barbatus
- Modiolus modiolus
- Montacuta substriata
- Montacuta tenella
- Musculus costulatus
- Musculus discors
- Musculus niger
- Mya arenaria
- Mya truncata
- Myrtea spinifera
- Mysella bidentata
- Mysella dawsoni
- Mysella tumidula
- Mysia undata
- Mytilus edulis
- Mytilus galloprovincialis
- Nassarius incrassatus
- Nassarius nitidus
- Nassarius pygmaeus
- Nassarius reticulatus
- Nematomenia banyulensis
- Neomenia carinata
- Neptunea antiqua
- Neptunea contraria
- Noemiamea dolioliformis
- Nototeredo norvegica
- Nucella lapillus
- Nucula hanleyi
- Nucula nitidosa
- Nucula nucleus
- Nucula sulcata
- Nuculana minuta
- Nuculana pernula
- Nuculoma tenuis
- Obtusella intersecta
- Ocenebra erinacea
- Octopus vulgaris
- Odostomia acuta
- Odostomia carrozzai
- Odostomia conoidea
- Odostomia conspicua
- Odostomia eulimoides
- Odostomia lukisii
- Odostomia plicata
- Odostomia scalaris
- Odostomia turrita
- Odostomia unidentata
- Oenopota rufa
- Oenopota trevelliana
- Oenopota turricula
- Okenia leachii
- Okenia quadricornis
- Omalogyra atomus
- Ommastrephes bartramii
- Onchidoris depressa
- Onchidoris fusca
- Onchidoris inconspicua
- Onchidoris luteocincta
- Onchidoris muricata
- Onchidoris pusilla
- Onchidoris sparsa
- Ondina diaphana
- Ondina divisa
- Onoba aculea
- Onoba semicostata
- Osilinus lineatus
- Ostrea edulis
- Otina ovata
- Ovatella denticulata
- Ovatella myosotis
- Palliolum furtivum
- Palliolum striatum
- Palliolum tigerinum
- Pandora albida
- Pandora pinna
- Panomya arctica
- Paphia aurea
- Paphia rhomboides
- Parvicardium exiguum
- Parvicardium minimum
- Parvicardium ovale
- Parvicardium scabrum
- Patella intermedia
- Patella ulyssiponensis
- Patella vulgata
- Pecten maximus
- Pelseneeria minor
- Petricola pholadiformis
- Pharus legumen
- Phaseolus guilonardi
- Phaxas pellucidus
- Philine angulata
- Philine aperta
- Philine catena
- Philine pruinosa
- Philine punctata
- Philine quadrata
- Philine scabra
- Philinoglossa helgolandica
- Pholas dactylus
- Placida dendritica
- Pleurobranchus membranaceus
- Pododesmus patelliformis
- Pododesmus squama
- Polycera dubia
- Polycera faeroensis
- Polycera notha
- Polycera quadrilineata
- Potamopyrgus antipodarum
- Propilidium exiguum
- Pseudamussium septemradiatum
- Psiloteredo megotara
- Puncturella noachina
- Pusillina inconspicua
- Pusillina sarsii
- Raphitoma leufroyi
- Raphitoma linearis
- Raphitoma purpurea
- Retusa obtusa
- Retusa truncatula
- Retusa umbilicata
- Rhopalomenia aglaopheniae
- Rissoa lilacina
- Rissoa membranacea
- Rissoa parva
- Rissoa porifera
- Rissoella diaphana
- Rissoella globularis
- Rissoella opalina
- Rossia macrosoma
- Rossia palpebrosa
- Rostanga rubra
- Roxania utricula
- Runcina coronata
- Saxicavella jeffreysi
- Scaphander lignarius
- Scrobicularia plana
- Scutopus ventrolineatus
- Semisalsa stagnorum
- Sepia elegans
- Sepia officinalis
- Sepiella japonica
- Sepietta neglecta
- Sepietta oweniana
- Sepiola atlantica
- Sepiola aurantiaca
- Simnia patula
- Skenea serpuloides
- Skeneopsis planorbis
- Solecurtus chamasolen
- Solecurtus scopula
- Solen marginatus
- Sphenia binghami
- Spisula elliptica
- Spisula solida
- Spisula subtruncata
- Striarca lactea
- Tapes decussata
- Tapes philippinarum
- Tectura testudinalis
- Tellimya ferruginosa
- Tellina donacina
- Tellina fabula
- Tellina pygmaea
- Tellina tenuis
- Tenellia adspersa
- Teredo navalis
- Teredora malleolus
- Teretia teres
- Tergipes tergipes
- Teuthowenia megalops
- Thecacera pennigera
- Theodoxus fluviatilis
- Thracia convexa
- Thracia distorta
- Thracia papyracea
- Thracia villosiuscula
- Thyasira croulinensis
- Thyasira equalis
- Thyasira ferruginea
- Thyasira flexuosa
- Thyasira gouldi
- Thyasira sarsi
- Timoclea ovata
- Todarodes sagittatus
- Todaropsis eblanae
- Tornus subcarinatus
- Trichotropis borealis
- Tricolia picta
- Tritonia hombergi
- Tritonia lineata
- Tritonia plebeia
- Trivia arctica
- Trivia monacha
- Trophon barvicensis
- Trophon clathratus
- Trophon muricatus
- Trophon truncatus
- Troschelia berniciensis
- Turbonilla crenata
- Turbonilla jeffreysii
- Turbonilla lactea
- Turbonilla rufescens
- Turritella communis
- Turtonia minuta
- Typhlomangelia nivalis
- Urosalpinx cinerea
- Velutina plicatilis
- Velutina velutina
- Venerupis saxatilis
- Venerupis senegalensis
- Ventrosia ventrosa
- Venus casina
- Venus verrucosa
- Vitreolina philippi
- Volutopsius norwegicus
- Volvulella acuminata
- Xylophaga dorsalis
- Xylophaga praestans
- Yoldiella lucida
- Yoldiella philippiana
- Zirfaea crispata
Decision path