California: Pleistocene and Pliocene

Screen 21: Cardioidea, Mactroidea

Clinocardium meekianum (65 mm), colno 391 Pliocene, Rio Dell Formation	Clinocardium meekianum (80 mm), colno 38919 Pliocene, Purisma Formation

Clinocardium meekianum (82 mm), colno 38983 Pliocene, Purisma Formation	Mactra nasuta (22 mm), colno 43750 Pleistocene, Palos Verdes Sands

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Dentaliida	Patelloidea	Fissurelloidea	Cirroidea	Cerithioidea	Littorinoidea	Janthinoidea	Buccinoidea
Columbelloidea	Conoidea	Volutoidea	Muricoidea	Naticoidea	Calyptraeoidea	Tonnoidea	Ellobioidea
Nuculoidea	Nuculanoidea	Arcoidea	Limopsoidea	Mytiloidea	Ostreoidea	Pecinoidea	Lucinoidea
Carditoidea	Crassatelloidea	Cardioidea	Mactroidea	Telinoidea	Donacoidea	Veneroidea	Myoidea	Pholadoidea

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