Hinge on inside of shell with numerous alternating teeth and sockets
Step 323
Hinge on inside of shell with clearly differing cardinal teeth (ct) and lateral teeth (lt), or without teeth
Step 338
170 possible taxa remaining show common names
- Abra alba
- Abra longicallus
- Abra nitida
- Abra prismatica
- Abra tenuis
- Acanthocardia echinata
- Acanthocardia tuberculata
- Aequipecten opercularis
- Anomia ephippium
- Arca nodulosa
- Arca tetragona
- Arcopagia balaustina
- Arcopagia crassa
- Arctica islandica
- Astarte borealis
- Astarte elliptica
- Astarte montagui
- Astarte sulcata
- Atrina pectinata
- Bankia fimbriatula
- Barnea candida
- Barnea parva
- Bathyarca pectunculoides
- Cardiomya costellata
- Cerastoderma edule
- Cerastoderma lamarcki
- Chamelea striatula
- Chlamys sulcata
- Chlamys varia
- Clausinella fasciata
- Cochlodesma praetenue
- Corbula gibba
- Crassadoma pusio
- Crassostrea gigas
- Crassostrea virginica
- Crenella decussata
- Cuspidaria cuspidata
- Cuspidaria obesa
- Cuspidaria rostrata
- Devonia perrieri
- Diplodonta rotundata
- Donax vittatus
- Dosinia exoleta
- Dosinia lupina
- Ensis americanus
- Ensis arcuatus
- Ensis ensis
- Ensis minor
- Ensis siliqua
- Epilepton clarkiae
- Gari costulata
- Gari depressa
- Gari fervensis
- Gari tellinella
- Glycymeris glycymeris
- Goodallia triangularis
- Gouldia minima
- Hemilepton nitidum
- Heteranomia squamula
- Hiatella arctica
- Hyalopecten similis
- Idas simpsoni
- Irus irus
- Kellia suborbicularis
- Laevicardium crassum
- Lasaea rubra
- Lepton squamosum
- Limaria hians
- Limatula gwyni
- Limatula subauriculata
- Limea loscombi
- Loripes lacteus
- Lucinella divaricata
- Lucinoma borealis
- Lutraria angustior
- Lutraria lutraria
- Lyonsia norwegica
- Macoma balthica
- Macoma calcarea
- Mactra stultorum
- Mercenaria mercenaria
- 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
- Nototeredo norvegica
- Nucula hanleyi
- Nucula nitidosa
- Nucula nucleus
- Nucula sulcata
- Nuculana minuta
- Nuculana pernula
- Nuculoma tenuis
- Ostrea edulis
- Palliolum furtivum
- Palliolum striatum
- Palliolum tigerinum
- Pandora albida
- Pandora pinna
- Panomya arctica
- Paphia aurea
- Paphia rhomboides
- Parvicardium exiguum
- Parvicardium minimum
- Parvicardium ovale
- Parvicardium scabrum
- Pecten maximus
- Petricola pholadiformis
- Pharus legumen
- Phaseolus guilonardi
- Phaxas pellucidus
- Pholas dactylus
- Pododesmus patelliformis
- Pododesmus squama
- Pseudamussium septemradiatum
- Psiloteredo megotara
- Saxicavella jeffreysi
- Scrobicularia plana
- Solecurtus chamasolen
- Solecurtus scopula
- Solen marginatus
- Sphenia binghami
- Spisula elliptica
- Spisula solida
- Spisula subtruncata
- Striarca lactea
- Tapes decussata
- Tapes philippinarum
- Tellimya ferruginosa
- Tellina donacina
- Tellina fabula
- Tellina pygmaea
- Tellina tenuis
- Teredo navalis
- Teredora malleolus
- Thracia convexa
- Thracia distorta
- Thracia papyracea
- Thracia villosiuscula
- Thyasira croulinensis
- Thyasira equalis
- Thyasira ferruginea
- Thyasira flexuosa
- Thyasira gouldi
- Thyasira sarsi
- Timoclea ovata
- Turtonia minuta
- Venerupis saxatilis
- Venerupis senegalensis
- Venus casina
- Venus verrucosa
- Xylophaga dorsalis
- Xylophaga praestans
- Yoldiella lucida
- Yoldiella philippiana
- Zirfaea crispata
Decision path