Classification of Secord 1998
G. †Parectypodus Jepsen 1930
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†Parectypodus sylviae Rigby, Jr. 1980
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Invalid names: Parectypodus pattersoni Sloan 1987 [synonym]
†Periptychus carinidens Cope 1881
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Invalid names: Catathlaeus rhabdodon Cope 1881 [synonym]
†Thryptacodon demari Gazin 1956
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Invalid names: Thryptacodon belli Gazin 1956 [synonym]