COSTA RICA: Pliocene

Screen 100: Chamoidea, Crassatelloidea

Chama mexicana (105 mm), colno 58845 Montezuma Formation	Crassatella bowdensis costaricensis (3 mm), colno 30541 Rio Banano Formation
Crassatella reevei (53 mm), colno 30563 Rio Banano Formation	Crassatella species (8 mm), colno 30667 Rio Banano Formation

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Dentaliida	Gadilimorpha	Patelloidea	Fissurelloidea	Cirroidea	Neritoidea	Stromboidea	Rissooidea
Cerithioidea	Vermetoidea	Xenophoroidea	Janthinoidea	Eulimoidea	Buccinoidea	Columbelloidea	Conoidea
Mitroidea	Turbinelloidea	Volutoidea	Muricoidea	Naticoidea	Cypraeoidea	Lamellarioidea	Calyptraeoidea
Tonnoidea	Ficoidea	Architectonicoidea	Pyramidelloidea	Acteonoidea	Bulloidea	Pleurotomarioidea	Spiratelloidea
Nuculoidea	Nuculanoidea	Arcoidea	Limopsoidea	Mytiloidea	Pterioidea	Pinnoidea	Limoidea
Ostreoidea	Plicatelloidea	Pectinoidea	Anomioidea	Lucinoidea	Carditoidea	Chamoidea	Crassatelloidea
Cardioidea	Mactroidea	Tellinoidea	Glossoidea	Veneroidea	Myoidea	Hiatelloidea