Opinions from P. S. Spencer and M. J. Benton 2000
- 'Coelodontognathus belongs to Amniota'
- 'Coelodontognathus donensis belongs to Coelodontognathus' according to Ochev 1967
- 'Coelodontognathus donensis belongs to Coelodontognathus'
- 'Coelodontognathus ricovi belongs to Coelodontognathus' according to Ochev 1967
- 'Coelodontognathus ricovi belongs to Coelodontognathus'
- 'Contritosaurus is a subjective synonym of Phaanthosaurus'
- 'Contritosaurus convector is a subjective synonym of Phaanthosaurus simus'
- 'Contritosaurus simus is recombined as Phaanthosaurus simus'
- 'Insulophon is a subjective synonym of Orenburgia'
- 'Insulophon morachovskayae is a subjective synonym of Orenburgia concinna'
- 'Kapes belongs to Procolophoninae'
- 'Kapes amaenus belongs to Kapes'
- 'Kapes serotinus is a subjective synonym of Kapes majmesculae'
- 'Lestanshoria is a subjective synonym of Orenburgia'
- 'Lestanshoria massiva is a subjective synonym of Orenburgia concinna'
- 'Macrophon is a subjective synonym of Kapes'
- 'Macrophon komiensis is recombined as Kapes komiensis'
- 'Microphon belongs to Spondylolestinae'
- 'Microphon exiguus belongs to Microphon'
- 'Orenburgia belongs to Procolophoninae'
- 'Orenburgia bruma belongs to Orenburgia'
- 'Orenburgia concinna belongs to Orenburgia'
- 'Phaanthosaurus belongs to Spondylolestinae'
- 'Phaanthosaurus ignatjevi belongs to Phaanthosaurus'
- 'Procolophonidae belongs to Procolophonoidea'
- 'Procolophoninae belongs to Procolophonidae'
- 'Procolophonoidea was reranked as a suborder and belongs to Parareptilia'
- 'Samaria is a subjective synonym of Orenburgia'
- 'Spondylolestes belongs to Spondylolestinae'
- 'Spondylolestinae belongs to Procolophonidae'
- 'Tichvinskia belongs to Procolophoninae'
- 'Tichvinskia enigmatica is recombined as Orenburgia enigmatica'
- 'Tichvinskia jugensis is a nomen dubium'
- 'Tichvinskia majmesculae is recombined as Kapes majmesculae'
- 'Tichvinskia vjatkensis belongs to Tichvinskia'
- 'Timanophon belongs to Procolophoninae'
- 'Timanophon raridentatus belongs to Timanophon'
- 'Vitalia belongs to Amniota'
- 'Vitalia grata belongs to Vitalia'