Taxa Count: 21

HYAENODONTIDAE

Acarictis ryani Gingerich & Deutsch, 1989

Arfia Van Valen, 1965

Arfia opisthotoma (Matthew, 1901)

Arfia shoshoniensis (Matthew & Granger, 1915)

Hyaenodon Laizer & Parieu, 1838

Hyaenodon crucians Leidy, 1853

Hyaenodon horridus (Leidy, 1853)

Hyaenodon mustelinus Scott, 1894

Prolimnocyon atavus Matthew & Granger, 1915

Prolimnocyon haematus Gingerich & Deutsch, 1989

Prolimnocyon robustus (Matthew & Granger, 1915)

Prototomus deimos Gingerich & Deutsch, 1989

Prototomus martis Gingerich & Deutsch, 1989

Prototomus phobos Gingerich & Deutsch, 1989

Prototomus robustus (Matthew & Granger, 1915)

Prototomus secundarius (Cope, 1875)

Prototomus viverrinus Cope, 1874

Prototomus vulpecula (Matthew & Granger, 1915)

Sinopa Leidy, 1871

Sinopa strenua (Cope, 1875)

Tritemnodon strenuus (Cope, 1875)