Opinions from R. L. Carroll et al. 1998
- 'Acherontiscidae belongs to Lepospondyli'
- 'Acherontiscus belongs to Acherontiscidae'
- 'Acherontiscus caledoniae belongs to Acherontiscus'
- 'Adelogyrinidae belongs to Adelospondyli'
- 'Adelogyrinus belongs to Adelogyrinidae'
- 'Adelogyrinus simorhynchus belongs to Adelogyrinus'
- 'Adelospondyli belongs to Lepospondyli'
- 'Adelospondylus belongs to Adelogyrinidae'
- 'Adelospondylus watsoni belongs to Adelospondylus'
- 'Aistopoda was reranked as a order and belongs to Lepospondyli'
- 'Aornerpeton belongs to Phlegethontiidae'
- 'Arizonerpeton belongs to Nectridea'
- 'Arizonerpeton wellsi belongs to Arizonerpeton'
- 'Asaphestera belongs to Tuditanidae'
- 'Batrachiderpeton belongs to Diplocaulidae'
- 'Batrachocephalus crassidens belongs to Batrachocephalus'
- 'Batropetes belongs to Brachystelechidae'
- 'Boii belongs to Tuditanidae'
- 'Brachydectes belongs to Cocytinidae'
- 'Brachydectes elongatus belongs to Brachydectes'
- 'Brachystelechidae belongs to Microbrachomorpha'
- 'Cardiocephalus belongs to Gymnarthridae'
- 'Cardiocephalus peabodyi belongs to Cardiocephalus'
- 'Cardiocephalus sternbergi belongs to Cardiocephalus'
- 'Carrolla belongs to Brachystelechidae'
- 'Carrolla craddocki belongs to Carrolla'
- 'Cocytinidae belongs to Lysorophia'
- 'Coloraderpeton belongs to Ophiderpetontidae'
- 'Coloraderpeton brilli belongs to Coloraderpeton' according to Vaughn 1969
- 'Coloraderpeton brilli belongs to Coloraderpeton'
- 'Crinodon belongs to Tuditanidae'
- 'Crossotelos belongs to Sauropleurinae'
- 'Crossotelos annulatus belongs to Crossotelos'
- 'Ctenerpeton belongs to Urocordylinae'
- 'Ctenerpeton alveolatum is a subjective synonym of Sauropleura remex'
- 'Cymatorhiza belongs to Microsauria'
- 'Cymatorhiza kittsi belongs to Cymatorhiza'
- 'Diceratosaurus belongs to Diplocaulidae'
- 'Diceratosaurus robustus is a subjective synonym of Erpetosaurus radiatus'
- 'Diplocaulidae belongs to Nectridea'
- 'Diplocaulus belongs to Diplocaulidae'
- 'Diplocaulus brevirostris belongs to Diplocaulus'
- 'Diplocaulus copei is a nomen vanum'
- 'Diplocaulus magnicornis belongs to Diplocaulus'
- 'Diplocaulus minimus belongs to Diplocaulus'
- 'Diplocaulus parvus belongs to Diplocaulus' according to Olson 1972
- 'Diplocaulus parvus belongs to Diplocaulus'
- 'Diplocaulus recurvatus belongs to Diplocaulus'
- 'Diplocaulus salamandroides belongs to Diplocaulus'
- 'Diploceraspis belongs to Diplocaulidae'
- 'Diploceraspis burkei belongs to Diploceraspis'
- 'Diploceraspis conemaughensis belongs to Diploceraspis' according to Romer 1952
- 'Diploceraspis conemaughensis is a subjective synonym of Diploceraspis burkei'
- 'Dolichopareias belongs to Adelogyrinidae'
- 'Dolichopareias disjectus belongs to Dolichopareias'
- 'Dolichosoma belongs to Phlegethontiidae'
- 'Dolichosoma emersoni belongs to Dolichosoma' according to Huxley and Wright 1867
- 'Dolichosoma emersoni belongs to Dolichosoma'
- 'Dolichosoma longissimum is recombined as Phlegethontia longissima'
- 'Elfridia belongs to Gymnarthridae'
- 'Elfridia bulbidens belongs to Elfridia'
- 'Eumicrerpeton parvum belongs to Eumicrerpeton' according to Milner 1982
- 'Euryodus belongs to Gymnarthridae'
- 'Euryodus bonneri belongs to Euryodus' according to Schultze and Foreman 1981
- 'Euryodus bonneri belongs to Euryodus'
- 'Euryodus dalyae belongs to Euryodus'
- 'Euryodus primus belongs to Euryodus'
- 'Goniorhynchidae belongs to Tuditanomorpha'
- 'Goniorhynchus stovalli is recombined as Rhynchonkos stovalli'
- 'Gymnarthridae belongs to Tuditanomorpha'
- 'Hapsidopareion belongs to Hapsidopareiontidae'
- 'Hapsidopareion lepton belongs to Hapsidopareion'
- 'Hapsidopareiontidae belongs to Tuditanomorpha'
- 'Hylerpeton belongs to Gymnarthridae'
- 'Hylerpeton intermedium is recombined as Asaphestera intermedia'
- 'Hylonomus geinitzi is recombined as Saxonerpeton geinitzi'
- 'Hylonomus multidens belongs to Hylonomus' according to Dawson 1882
- 'Hylonomus multidens belongs to Hylonomus'
- 'Hyloplesion belongs to Hyloplesiontidae'
- 'Hyloplesion fritschi is recombined as Batropetes fritschia'
- 'Hyloplesiontidae belongs to Microbrachomorpha'
- 'Inusitatodon smithi belongs to Inusitatodon' according to Brink and Kitching 1953
- 'Ceraterpeton is a misspelling of Keraterpeton'
- 'Keraterpeton belongs to Diplocaulidae'
- 'Keraterpeton galvani belongs to Keraterpeton'
- 'Keraterpeton longtoni belongs to Keraterpeton'
- 'Keraterpetontidae is a subjective synonym of Diplocaulidae'
- 'Leiocephalikon belongs to Gymnarthridae'
- 'Lepterpeton belongs to Sauropleurinae'
- 'Lepterpeton dobbsii belongs to Lepterpeton'
- 'Lethiscidae belongs to Aistopoda'
- 'Lethiscus belongs to Lethiscidae'
- 'Lethiscus stocki belongs to Lethiscus'
- 'Llistrofus belongs to Hapsidopareiontidae'
- 'Llistrofus pricei belongs to Llistrofus'
- 'Lysorophia belongs to Lepospondyli'
- 'Lysorophus belongs to Lysorophia'
- 'Lysorophus dunkardensis belongs to Lysorophus' according to Romer 1952
- 'Lysorophus dunkardensis belongs to Lysorophus'
- 'Lysorophus tricarinatus belongs to Lysorophus'
- 'Micraroter belongs to Ostodolepidae'
- 'Micraroter erythrogeios belongs to Micraroter'
- 'Microbrachidae belongs to Microbrachomorpha'
- 'Microbrachis belongs to Microbrachidae'
- 'Microbrachis pelikani belongs to Microbrachis'
- 'Microbrachomorpha belongs to Microsauria'
- 'Microsauria belongs to Lepospondyli'
- 'Molgophis belongs to Lysorophia'
- 'Molgophis macrurus belongs to Molgophis' according to Cope 1868
- 'Molgophis macrurus belongs to Molgophis'
- 'Montcellia belongs to Sauropleurinae'
- 'Nectridea was reranked as a order and belongs to Lepospondyli'
- 'Novascoticus belongs to Microsauria'
- 'Odonterpeton belongs to Odonterpetontidae'
- 'Odonterpeton triangulare belongs to Odonterpeton'
- 'Odonterpetontidae belongs to Microbrachomorpha'
- 'Oestocephalus belongs to Ophiderpetontidae'
- 'Oestocephalus amphiuminum belongs to Oestocephalus'
- 'Ophiderpeton belongs to Ophiderpetontidae'
- 'Ophiderpeton brownriggi belongs to Ophiderpeton'
- 'Ophiderpeton granulosum belongs to Ophiderpeton' according to Fritsch 1880
- 'Ophiderpeton granulosum belongs to Ophiderpeton'
- 'Ophiderpeton kirktonense belongs to Ophiderpeton'
- 'Ophiderpeton nanum belongs to Ophiderpeton' according to Hancock and Atthey 1868
- 'Ophiderpeton nanum belongs to Ophiderpeton'
- 'Ophiderpeton swisshelmense belongs to Ophiderpeton'
- 'Ophiderpeton vicinum belongs to Ophiderpeton' according to Fritsch 1880
- 'Ophiderpeton vicinum belongs to Ophiderpeton'
- 'Ophiderpetontidae belongs to Aistopoda'
- 'Ostodolepidae belongs to Tuditanomorpha'
- 'Ostodolepis belongs to Ostodolepidae'
- 'Ostodolepis brevispinatus belongs to Ostodolepis'
- 'Palaeomolgophis belongs to Adelogyrinidae'
- 'Palaeomolgophis scoticus belongs to Palaeomolgophis'
- 'Pantylidae belongs to Tuditanomorpha'
- 'Pantylus belongs to Pantylidae'
- 'Pantylus cordatus belongs to Pantylus'
- 'Pariotichus belongs to Gymnarthridae'
- 'Pelodosotis belongs to Ostodolepidae'
- 'Pelodosotis elongatum belongs to Pelodosotis'
- 'Phlegethontia belongs to Phlegethontiidae'
- 'Phlegethontia linearis belongs to Phlegethontia'
- 'Phlegethontia mazonensis is recombined as Aornerpeton mazonensis'
- 'Phlegethontia phanerhapha belongs to Phlegethontia'
- 'Phlegethontiidae belongs to Aistopoda'
- 'Pleuroptyx belongs to Cocytinidae'
- 'Pleuroptyx clavatus belongs to Pleuroptyx' according to Cope 1875
- 'Pleuroptyx clavatus belongs to Pleuroptyx'
- 'Ptyonius belongs to Urocordylinae'
- 'Ptyonius olisthmonaias belongs to Ptyonius'
- 'Quasicaecilia belongs to Brachystelechidae'
- 'Quasicaecilia texana belongs to Quasicaecilia'
- 'Rhynchonkos belongs to Goniorhynchidae'
- 'Ricnodon belongs to Hapsidopareiontidae'
- 'Sauravus belongs to Scincosauridae'
- 'Sauravus cambrayi belongs to Sauravus' according to Thevenin 1910
- 'Sauravus cambrayi belongs to Sauravus'
- 'Sauravus costei belongs to Sauravus' according to Thevenin 1906
- 'Sauravus costei belongs to Sauravus'
- 'Sauropleura belongs to Sauropleurinae'
- 'Sauropleura bairdi belongs to Sauropleura'
- 'Sauropleura longicaudata belongs to Sauropleura' according to Langiaux et al. 1974
- 'Sauropleura longicaudata belongs to Sauropleura'
- 'Sauropleura pectinata belongs to Sauropleura'
- 'Sauropleura remex belongs to Sauropleura' according to Cope 1868
- 'Sauropleura remex is recombined as Ctenerpeton remex'
- 'Sauropleurinae belongs to Urocordylidae'
- 'Saxonerpeton belongs to Hapsidopareiontidae'
- 'Scincosauridae belongs to Nectridea'
- 'Scincosaurus belongs to Scincosauridae'
- 'Scincosaurus crassus belongs to Scincosaurus'
- 'Scincosaurus spinosus belongs to Scincosaurus' according to Civet 1982
- 'Scincosaurus spinosus belongs to Scincosaurus'
- 'Sillerpeton belongs to Phlegethontiidae'
- 'Sillerpeton permianum belongs to Sillerpeton'
- 'Sparodus belongs to Gymnarthridae'
- 'Stegotretus belongs to Gymnarthridae'
- 'Stegotretus agyrus belongs to Stegotretus'
- 'Trachystegos belongs to Pantylidae'
- 'Trachystegos megalodon belongs to Trachystegos' according to Carroll 1966
- 'Trachystegos megalodon belongs to Trachystegos'
- 'Trihecaton belongs to Trihecatontidae'
- 'Trihecaton howardinus belongs to Trihecaton' according to Vaughn 1972
- 'Trihecaton howardinus belongs to Trihecaton'
- 'Trihecatontidae belongs to Tuditanomorpha'
- 'Tuditanidae belongs to Tuditanomorpha'
- 'Tuditanomorpha belongs to Microsauria'
- 'Tuditanus belongs to Tuditanidae'
- 'Tuditanus punctulatus belongs to Tuditanus'
- 'Urocordylidae belongs to Nectridea'
- 'Urocordylinae belongs to Urocordylidae'
- 'Urocordylus belongs to Urocordylinae'
- 'Urocordylus scalaris belongs to Urocordylus'
- 'Urocordylus wandesfordii belongs to Urocordylus'
- 'Utaherpeton belongs to Microsauria'
- 'Utaherpeton franklini belongs to Utaherpeton'