Classification of Simpson 1937

G. †Esthonyx Cope 1874
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†Esthonyx grangeri Simpson 1937
†Esthonyx latidens Simpson 1937
G. †Plesiadapis Gervais 1877
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†Plesiadapis dubius Matthew 1915
G. †Apheliscus Cope 1875
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†Apheliscus nitidus Simpson 1937
G. †Haplomylus Matthew 1915
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†Haplomylus speirianus Cope 1880
G. †Phenacodus Cope 1873
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†Phenacodus robustus Simpson 1937
†Didymictis protenus Cope 1874
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Invalid names: Didymictis curtidens Cope 1882 [synonym]
†Ectocion osbornianus Cope 1882
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Invalid names: Ectocion parvus Granger 1915 [synonym], Ectocion ralstonensis Granger 1915 [synonym], Ectocion superstes Granger 1915 [synonym]
†Esthonyx bisulcatus Cope 1874
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Invalid names: Esthonyx acer Cope 1874 [synonym], Esthonyx burmeisterii Cope 1874 [synonym]
†Phenacodus primaeous Cope 1873
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Invalid names: Phenacodus hemiconus Cope 1882 [synonym], Phenacodus intermedius Granger 1915 [synonym]