Opinions from J. A. Clack and A. R. Milner 2015
- 'Acanthostega belongs to Acanthostegidae'
- 'Megalocephalus enchodus is a subjective synonym of Megalocephalus lineolatus'
- 'Antlerpeton belongs to Tetrapoda'
- 'Baphetes belongs to Baphetinae'
- 'Baphetes latirostris is an objective synonym of Baphetes kirkbyi'
- 'Baphetes minor is a nomen dubium'
- 'Baphetidae belongs to Baphetoidea'
- 'Baphetinae belongs to Baphetidae' according to E. D. Cope 1975
- 'Baphetoidea belongs to Tetrapoda'
- 'Caerorhachidae belongs to Tetrapoda'
- 'Caerorhachis belongs to Caerorhachidae'
- 'Casineria belongs to Tetrapoda'
- 'Colosteidae belongs to Tetrapoda'
- 'Colosteus belongs to Colosteidae'
- 'Colosteus crassiscutatus is a subjective synonym of Colosteus scutellatus'
- 'Crassigyrinidae belongs to Tetrapoda'
- 'Crassigyrinus belongs to Crassigyrinidae'
- 'Deltaherpeton belongs to Colosteidae'
- 'Dendrerpeton rugosum belongs to Dendrerpeton' according to Huxley 1867
- 'Densignathus belongs to Tetrapodomorpha'
- 'Doragnathus belongs to Tetrapoda'
- 'Eldeceeon belongs to Tetrapoda'
- 'Elginerpeton belongs to Elginerpetontidae'
- 'Elginerpetontidae belongs to Tetrapodomorpha'
- 'Eucritta belongs to Baphetoidea'
- 'Greererpeton belongs to Colosteidae'
- 'Hylonomus wildi belongs to Hylonomus' according to Woodward 1891
- 'Hylonomus wildi is recombined as Eugyrinus wildi'
- 'Hynerpeton belongs to Tetrapodomorpha'
- 'Ichthyerpeton belongs to Colosteidae'
- 'Ichthyerpeton bradleyae is a nomen dubium'
- 'Ichthyostega belongs to Ichthyostegidae'
- 'Ichthyostega wimani is an objective synonym of Ichthyostega eigili'
- 'Ichthyostegidae belongs to Tetrapodomorpha'
- 'Jakubsonia belongs to Tetrapodomorpha'
- 'Kirktonecta belongs to Tetrapoda'
- 'Kyrinion belongs to Loxommatinae'
- 'Kyrinion martilli belongs to Kyrinion' according to J. A. Clack 2003
- 'Loxomma belongs to Loxommatinae'
- 'Loxomma acutirhinus belongs to Loxomma' according to Watson 1929
- 'Loxomma allmanni belongs to Loxomma' according to T. H. Huxley 1862
- 'Loxomma rankini belongs to Loxomma' according to Beaumont 1977
- 'Loxommatinae belongs to Loxommatidae'
- 'Macrerpeton deani is an objective synonym of Colosteus crassiscutatus'
- 'Macromerium scoticum is an objective synonym of Crassigyrinus scoticus'
- 'Megalocephalus belongs to Loxommatinae'
- 'Megalocephalus macromma is a subjective synonym of Octagomphus woodi'
- 'Metaxygnathus belongs to Tetrapodomorpha'
- 'Obruchevichthys belongs to Elginerpetontidae'
- 'Occidens belongs to Whatcheeriidae'
- 'Ossinodus belongs to Whatcheeriidae'
- 'Otocratia modesta is an objective synonym of Pholidogaster pisciformis'
- 'Pederpes belongs to Whatcheeriidae'
- 'Pholidogaster belongs to Colosteidae'
- 'Pholidogasteridae is an objective synonym of Colosteidae'
- 'Pygopterus scutellatus is recombined as Colosteus scutellatus'
- 'Sauropleura longidentata is an objective synonym of Colosteus crassiscutatus'
- 'Sigournea belongs to Tetrapoda'
- 'Silvanerpeton belongs to Tetrapoda'
- 'Sinostega belongs to Tetrapodomorpha'
- 'Spathicephalidae belongs to Baphetoidea'
- 'Spathicephalus belongs to Spathicephalidae'
- 'Tulerpetidae belongs to Tetrapodomorpha'
- 'Tulerpeton belongs to Tulerpetidae' according to Lebedev and Coates 1995
- 'Ventastega belongs to Tetrapodomorpha'
- 'Westlothiana belongs to Tetrapoda'
- 'Whatcheeria belongs to Whatcheeriidae'
- 'Whatcheeriidae belongs to Tetrapoda'
- 'Ymeria belongs to Ichthyostegidae'