Classification of Yin and Yochelson 1983
G. †Delphinulopsis Laube 1868
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†Delphinulopsis binodosa Münster 1841
†Delphinulopsis laubei Kittl 1892
G. †Eucycloscala Cossmann 1895
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†Eucycloscala binodosa Münster 1841
†Eucycloscala obliquicostata Yin and Yochelson 1983
†Eucycloscala spinulosa Klipstein 1843
Fm. Neritidae Rafinesque 1815
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Fm. Turbinidae Rafinesque 1815
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Subg. †Naticopsis (Marmolatella) Kittl 1894
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†Naticopsis (Marmolatella) applanata Kittl 1894
†Naticopsis (Marmolatella) plana Koken 1898
Subg. †Naticopsis (Naticopsis) M'Coy 1844
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†Naticopsis (Naticopsis) signata Koken 1900