FRANCE: Eocene, Lutetian, Screen 73, Gastropoda
Borsonia incerta Borsonia minor
Borsonia incerta (13 mm) Borsonia minor (15 mm)
Borsonia nodulosa Borsonia obesula
Borsonia nodulosa (16 mm) Borsonia obesula (13 mm)
Sepioidea Dentaliida Gadilimorha Patelloidea Fissurelloidea Trochoidea Cirroidea Neritoidea Stromboidea Rissooidea
Cerithioidea Vermetoidea Littorinoidea Vanikoroidea Xenophoroidea Ptenoglossa Janthinoidea Eulimoidea Buccinoidea Columbelloidea
Conoidea Mitroidea Volutoidea Muricoidea Naticoidea Cypraeoidea Calyptraeoidea Tonnoidea Ficoidea Rissoelloidea
Architectonicoidea Pyramidelloidea Acteonoidea Bulloidea Aplysioidea Spiratelloidea Elloboidea Lymnaeoidea Planorbioidea
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