Classification of Cifelli et al. 1995

G. †Propalaeosinopa Simpson 1927
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Propalaeosinopa diluculi Simpson 1935
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Invalid names: Bessoecetor thomsoni Simpson 1936 [synonym]
G. †Desmatoclaenus Gazin 1941
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G. †Loxolophus Cope 1885
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Loxolophus pentacus Cope 1888
Invalid names: Protogonodon Scott 1892 [synonym]
Anisonchus athelas Van Valen 1978
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Invalid names: Anisonchus eowynae Van Valen 1978 [synonym]
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Invalid names: Desmatoclaenus paracreodus Gazin 1941 [synonym]
Ectoconus ditrigonus Cope 1882
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Invalid names: Ectoconus majusculus Matthew 1937 [synonym]