JAPAN: Pleistocene, see for formation below pictures.

Screen 23: Nuculanoidea, Arcoidea

Yoldia notabilis Arca boucardi
Yoldia notabilis (28 mm), colno 37539
Omma Formation
Arca boucardi (48 mm), colno 35545
Omma Formation
Arca boucardi Barbatia bicolor
Arca boucardi (45 mm), colno 36581
Semata Formation
Barbatia bicolor (44 mm), colno 36601
Semata Formation
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Chitonina Dentaliida Patelloidea Fissurelloidea Trochoidea Cirroidea Cerithioidea Xenophoroidea
Buccinoidea Columbelloidea Conoidea Mitroidea Volutoidea Muricoidea Naticoidea Calyptraeoidea
Tonnoidea Architectonicoidea Pyramidelloidea Acteonoidea Nuculoidea Nuculanoidea Arcoidea Limopsoidea
Mytiloidea Limopsoidea Ostreoidea Pectinoidea Anomioidea Lucinoidea Galeommatoidea Carditoidea
Cardioidea Mactroidea Solenoidea Tellinoidea Glossoidea Corbiculoidea Veneroidea Myoidea
Hiatelloidea Pandoroidea Cuspidariina