Opinions from G. F. Gunnell 1998
- 'Acarictis belongs to Hyaenodontidae'
- 'Aelurotherium is a subjective synonym of Patriofelis'
- 'Aelurotherium bicuspis is a subjective synonym of Patriofelis ferox'
- 'Ambloctonus belongs to Oxyaenidae'
- 'Ambloctonus hyaenoides is a subjective synonym of Ambloctonus sinosus'
- 'Ambloctonus priscus belongs to Ambloctonus'
- 'Ambloctonus priscus belongs to Ambloctonus' according to Gunnell and Gingerich 1991
- 'Apataelurus belongs to Oxyaenidae'
- 'Creodonta was reranked as a order and belongs to Eutheria'
- 'Dipsalidictides is a subjective synonym of Dipsalidictis'
- 'Dipsalidictides is a subjective synonym of Dipsalidictis' according to Gunnell and Gingerich 1991
- 'Dipsalidictis belongs to Oxyaenidae'
- 'Dipsalidictis amplus is a subjective synonym of Dipsalidictis transiens'
- 'Dipsalidictis amplus is a subjective synonym of Dipsalidictis transiens' according to Gunnell and Gingerich 1991
- 'Dipsalidictis platypus belongs to Dipsalidictis'
- 'Dipsalodon belongs to Oxyaenidae'
- 'Entomodon comptus is recombined as Thinocyon comptus'
- 'Galecyon belongs to Hyaenodontidae'
- 'Galethylax belongs to Oxyaenidae'
- 'Gazinocyon belongs to Hyaenodontidae'
- 'Hemipsalodon belongs to Hyaenodontidae'
- 'Hemipsalodon cooki is a subjective synonym of Hemipsalodon grandis'
- 'Hemipsalodon grandis belongs to Hemipsalodon'
- 'Hyaenodon cruentus is a subjective synonym of Hyaenodon horridus'
- 'Hyaenodon exiguus is a subjective synonym of Hyaenodon venturae'
- 'Hyaenodon horridus belongs to Hyaenodon'
- 'Hyaenodon leptocephalus is a subjective synonym of Hyaenodon crucians'
- 'Hyaenodon minutus is a subjective synonym of Hyaenodon crucians'
- 'Hyaenodon paucidens is a subjective synonym of Hyaenodon crucians'
- 'Ischnognathus belongs to Hyaenodontidae'
- 'Ischnognathus savagei belongs to Ischnognathus'
- 'Limnocyon belongs to Limnocyonidae'
- 'Limnocyon agilis is recombined as Tritemnodon agilis'
- 'Limnocyon douglassi is a subjective synonym of Limnocyon potens'
- 'Limnocyon medius is recombined as Thinocyon medius'
- 'Limnocyon protenus is recombined as Didymictis protenus'
- 'Limnocyon riparius is a subjective synonym of Limnocyon verus'
- 'Limnocyon verus belongs to Limnocyon'
- 'Limnocyonidae belongs to Creodonta'
- 'Limnofelis is a subjective synonym of Patriofelis'
- 'Limnofelis ferox is recombined as Patriofelis ferox'
- 'Limnofelis latidens is a subjective synonym of Patriofelis ferox'
- 'Machaeroides belongs to Oxyaenidae'
- 'Neohyaenodon is a subjective synonym of Hyaenodon'
- 'Oreocyon is a subjective synonym of Patriofelis'
- 'Oxyaena belongs to Oxyaenidae'
- 'Oxyaena aequidens is recombined as Dipsalidictis aequidens'
- 'Oxyaena aequidens is recombined as Dipsalidictis aequidens' according to Gunnell and Gingerich 1991
- 'Oxyaena huerfanensis is a subjective synonym of Oxyaena lupina'
- 'Oxyaena lichna is recombined as Tytthaena lichna'
- 'Oxyaena lichna is recombined as Tytthaena lichna' according to Gunnell and Gingerich 1991
- 'Oxyaena lupina belongs to Oxyaena'
- 'Oxyaena lupina is a subjective synonym of Oxyaena forcipata' according to Gunnell and Gingerich 1991
- 'Oxyaena lupina is a subjective synonym of Oxyaena forcipata' according to Guthrie 1967
- 'Oxyaena lupina belongs to Oxyaena' according to Cope 1874
- 'Oxyaena morsitans is a subjective synonym of Oxyaena lupina'
- 'Oxyaena pardalis belongs to Oxyaena'
- 'Oxyaena pardalis belongs to Oxyaena' according to Gunnell and Gingerich 1991
- 'Oxyaena transiens is recombined as Dipsalidictis transiens'
- 'Oxyaena transiens is recombined as Dipsalidictis transiens' according to Gunnell and Gingerich 1991
- 'Oxyaena ultima is a subjective synonym of Oxyaena forcipata'
- 'Oxyaena ultima is a subjective synonym of Oxyaena forcipata' according to Gunnell and Gingerich 1991
- 'Oxyaenodon belongs to Limnocyonidae'
- 'Oxyaenodon dysclerus is a subjective synonym of Oxyaenodon dysodus'
- 'Oxyaenodon dysodus belongs to Oxyaenodon'
- 'Oxyaenodon wortmani is a nomen dubium'
- 'Paeneprolimnocyon amissadomus is a subjective synonym of Oodectes herpestoides'
- 'Paeneprolimnocyon iudei is a subjective synonym of Oodectes jepseni'
- 'Palaeonictis belongs to Oxyaenidae'
- 'Patriofelis belongs to Oxyaenidae'
- 'Patriofelis coloradensis is a subjective synonym of Patriofelis ulta'
- 'Patriofelis compressa is a subjective synonym of Patriofelis ulta'
- 'Patriofelis leidyanus is a subjective synonym of Patriofelis ferox'
- 'Prolimnocyon belongs to Limnocyonidae'
- 'Prolimnocyon elisabethae is a subjective synonym of Prolimnocyon antiquus'
- 'Prolimnocyon robustus is recombined as Prototomus robustus'
- 'Protopsalis belongs to Oxyaenidae'
- 'Protopsalis tigrinus belongs to Protopsalis'
- 'Prototomus belongs to Hyaenodontidae'
- 'Prototomus insidiosus is recombined as Apheliscus insidiosus'
- 'Prototomus jarrovii is recombined as Pelycodus jarrovii'
- 'Prototomus multicuspis is a subjective synonym of Prototomus secundarius'
- 'Prototomus secundarius belongs to Prototomus'
- 'Prototomus strenuus is recombined as Tritemnodon strenuus'
- 'Prototomus viverrinus belongs to Prototomus'
- 'Proviverra americana is a nomen dubium'
- 'Pseudopterodon is a subjective synonym of Hyaenodon'
- 'Pterodon californicus is a subjective synonym of Hyaenodon vetus'
- 'Pyrocyon belongs to Hyaenodontidae'
- 'Sarkastodon belongs to Oxyaenidae'
- 'Sinopa belongs to Hyaenodontidae'
- 'Sinopa eximia is a nomen dubium'
- 'Sinopa grangeri is a subjective synonym of Sinopa major'
- 'Sinopa minor is a subjective synonym of Sinopa rapax'
- 'Sinopa mordax is recombined as Galecyon mordax'
- 'Sinopa opisthotoma is recombined as Arfia opisthotoma'
- 'Sinopa shoshoniensis is recombined as Arfia shoshoniensis'
- 'Sinopa vulpecula is recombined as Gazinocyon vulpeculus'
- 'Stypolophus is a subjective synonym of Sinopa'
- 'Stypolophus bicuspis is recombined as Palaeictops bicuspis'
- 'Stypolophus brevicolcarabus is a subjective synonym of Tritemnodon agilis'
- 'Stypolophus hians is a subjective synonym of Tritemnodon strenuus'
- 'Stypolophus insectivorus is a nomen dubium'
- 'Stypolophus pungens is a subjective synonym of Sinopa rapax'
- 'Stypolophus whitiae is a subjective synonym of Tritemnodon strenuus'
- 'Thinocyon belongs to Limnocyonidae'
- 'Thinocyon mustelinus is a subjective synonym of Thinocyon velox'
- 'Thinocyon velox belongs to Thinocyon'
- 'Triacodon is a subjective synonym of Sinopa'
- 'Stypolophus aculeatus is a subjective synonym of Sinopa rapax'
- 'Triacodon fallax is a subjective synonym of Sinopa rapax'
- 'Triacodon grandis is a subjective synonym of Limnocyon verus'
- 'Triacodon nanus is a nomen dubium'
- 'Tytthaena belongs to Oxyaenidae'