| MAMMALIA Linnaeus, 1758 |
| EUTHERIA Huxley, 1880 |
| HYAENODONTA Van Valen, 1967 (sensuSolé, 2013) |
| HYAENODONTIDAE Leidy, 1869 |
| HYAENODONTINAE (Leidy, 1869) |
| PROPTERODONMartin, 1906 |
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