Opinions from C. L. Gazin 1969
- 'Aphronorus belongs to Pantolestidae'
- 'Aphronorus orieli belongs to Aphronorus'
- 'Arctocyonidae belongs to Creodonta'
- 'Chriacus belongs to Arctocyonidae'
- 'Chriacus truncatus belongs to Chriacus'
- 'Ectypodidae is a subjective synonym of Neoplagiaulacidae'
- 'Ectypodus belongs to Neoplagiaulacidae'
- 'Ectypodus grangeri is recombined as Neoplagiaulax grangeri'
- 'Ectypodus powelli belongs to Ectypodus'
- 'Haplaletes belongs to Hyopsodontidae'
- 'Hyopsodontidae belongs to Condylarthra'
- 'Hyopsodus acolytus is recombined as Promioclaenus acolytus'
- 'Leptacodon belongs to Nyctitheriidae'
- 'Leptacodon ladae belongs to Leptacodon'
- 'Lipodectes pelvidens is recombined as Chriacus pelvidens'
- 'Litaletes belongs to Hyopsodontidae'
- 'Litaletes disjunctus belongs to Litaletes'
- 'Mioclaenus lemuroides is recombined as Promioclaenus lemuroides'
- 'Mioclaenus subtrigonus is recombined as Tricentes subtrigonus'
- 'Neoplagiaulacidae belongs to Multituberculata'
- 'Neoplagiaulax belongs to Neoplagiaulacidae'
- 'Nyctitheriidae belongs to Insectivora'
- 'Pantolestidae belongs to Insectivora'
- 'Paromomyidae belongs to Primates'
- 'Plesiadapidae belongs to Primates'
- 'Pronothodectes belongs to Plesiadapidae'
- 'Pronothodectes matthewi belongs to Pronothodectes'
- 'Ptilodontidae belongs to Multituberculata'
- 'Ptilodus belongs to Ptilodontidae'
- 'Ptilodus montanus belongs to Ptilodus'
- 'Torrejonia belongs to Paromomyidae'
- 'Torrejonia wilsoni belongs to Torrejonia'
- 'Tricentes belongs to Arctocyonidae'