FRANCE: Miocene, Aquitanian, Screen 50, Mitroidea.

Merica bronni (20 mm), colno 23959	Trigonostoma acutangulum (24 mm), colno 11481
Trigonostoma burdigalense (10 mm), colno 23961	Trigonostoma pseudumbilicare (24 mm), colno 23960

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On to Bivalvia Aquitanian

On to Gastropoda Burdigalian

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Chitonica	Nautiloidea	Dentaliida	Patelloidea	Fissurelloidea	Scissurelloidea	Trochoidea	Cirroidea	Neritoidea	Stromboidea
Rissooidea	Tonnoidea	Cerithioidea	Vermetoidea	Littorinoidea	Xenophoroidea	Ptenoglossa	Buccinoidea	Columbelloidea	Conoidea
Mitroidea	Turbinelloidea	Volutoidea	Muricoidea	Naticoidea	Cypraeoidea	Lamellarioidea	Calyptraeoidea	Tonnoidea	Ficoidea
Architectonicoidea	Acteonoidea	Bulloidea	Spiratelloidea	Siphonaroidea	Planorboidea