Classification of Williamson and Brusatte 2013
†Wortmania otariidens Cope 1885
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Invalid names: Robertschochia sullivani Lucas and Williamson 1993 [synonym]
Unr. †Taeniodonta Cope 1876 [taeniodont]
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Unr. †Conoryctidae Wortman 1896
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G. †Conoryctella Gazin 1939
G. †Conoryctes Cope 1881
G. †Huerfanodon Schoch and Lucas 1981
G. †Onychodectes Cope 1888
Unr. †Stylinodontidae Marsh 1875
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G. †Ectoganus Cope 1874
G. †Psittacotherium Cope 1882
G. †Stylinodon Marsh 1874
G. †Wortmania Hay 1899
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Invalid names: Robertschochia Lucas 2011 [synonym], Schochia Lucas and Williamson 1993 [synonym]