Classification of Clarke 1909

G. †Cyrtolites Conrad 1838
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†Cyrtolites expansus Hall 1860
G. †Conocardium Bronn 1835
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†Conocardium incarceratum Clarke 1907
†Conocardium inceptum Hall 1859
G. †Plectonotus Clarke 1899
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†Plectonotus derbyi Clarke 1899
G. †Euomphalus Sowerby 1814
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†Euomphalus disjunctus Hall 1859
G. †Holopea Hall 1847
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†Holopea beushauseni Clarke 1907
†Holopea enjalrani Clarke 1907
G. †Eotomaria Ulrich and Scofield 1897
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†Eotomaria hitchcocki Clarke 1907
†Eotomaria kleini Beushausen 1884
G. †Platyceras Conrad 1840
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†Platyceras hebes Clarke 1907
†Platyceras kahlebergensis Beushausen 1884
†Platyceras leboutillieri Clarke 1907
G. †Pleurotomaria Defrance 1826
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†Pleurotomaria headillus Clarke 1909
G. †Loxonema Phillips 1841
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†Loxonema funatum Roemer 1855
†Loxonema highlandense Clarke 1909
G. †Chonetes Fischer de Waldheim 1830
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†Chonetes nectus Clarke 1907
G. †Leptaenisca Beecher 1890
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†Leptaenisca concava Hall 1857
G. †Sieberella Oehlert 1887
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G. †Diaphorostoma Fischer 1885
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†Diaphorostoma pastillus Clarke 1909
G. †Tropidocyclus de Koninck 1882
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†Tropidocyclus obex Clarke 1907
G. †Coelidium Clarke and Ruedemann 1903
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†Coelidium strebloceras Clarke 1907
†Coelidium tenue Clarke 1907
G. †Melissosoa Clarke 1909
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†Melissosoa compacta Hall 1859
G. †Phragmostoma Hall 1861
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†Phragmostoma diopetes Clarke 1907
†Phragmostoma nitela Clarke 1909