Classification of Hyde 1953
G. †Conocardium Bronn 1835
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†Conocardium cancellatum Hyde 1953
†Conocardium pulchellum White and Whitfield 1862
G. †Bucanopsis Ulrich and Scofield 1897
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†Bucanopsis deflectus Weller 1900
†Bucanopsis perelegans White and Whitfield 1862
†Bucanopsis textilis Miller 1877
†Bucanopsis waverliensis Hyde 1953
G. †Euphemites Warthin 1930
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†Euphemites nautiloides Winchell 1862
†Euphemites subglobosus Hyde 1953
G. †Mourlonia de Koninck 1883
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†Mourlonia solida Hyde 1953
†Mourlonia stellaeformis Hyde 1953
†Mourlonia textus Hyde 1953
G. †Murchisonia d'Archiac and de Verneuil 1841
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†Murchisonia uninodocarinata Hyde 1953
G. †Platyceras Conrad 1840
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†Platyceras equilateris Hall 1859
†Platyceras herzeri Winchell 1871
†Platyceras paralium White and Whitfield 1862
Subg. †Platyceras (Orthonychia) Hall 1843
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†Platyceras (Orthonychia) infabricatus Hyde 1953
†Platyceras (Orthonychia) lodiensis Meek 1871
†Platyceras (Orthonychia) sciotoensis Hyde 1953
†Platyceras (Orthonychia) waverlyensis Hyde 1953