Classification of Meek and Hayden 1858

G. †Pleurotomaria Defrance 1826
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†Pleurotomaria humerosa Meek and Hayden 1858
†Pleurotomaria subturbinata Meek and Hayden 1858
G. †Allorisma King 1844
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†Allorisma altirostrata Meek and Hayden 1858
†Allorisma leavenworthensis Meek and Hayden 1858
†Allorisma subcuneata Meek and Hayden 1858
G. †Discina Lamarck
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†Discina manhattanensis Meek and Hayden 1858
G. †Orthisina
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†Orthisina crassa Meek and Hayden 1858
Subg. †Axinus (Schizodus) King 1844
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†Axinus (Schizodus) ovatus Meek and Hayden 1858