Classification of Oliver 1952

G. †Platyceras Conrad 1840
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†Platyceras rarispinum Hall 1859
G. Levenia Gray 1847
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†Levenia lenticularis Vanuxem 1842
G. †Elytha Conrad
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†Elytha fimbriatus Conrad 1842
G. †Platystoma Conrad 1842
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†Platystoma lineata Conrad 1842
†Platystoma turbinata Hall 1861
†Platystoma unisulcata Conrad 1842