PBDB

Opinions from A. S. Romer and L. I. Price 1940

'Anningia belongs to Varanopsidae'
'Anningia megalops belongs to Anningia'
'Archaeobelus is a subjective synonym of Clepsydrops'
'Archaeobelus vellicatus is a subjective synonym of Clepsydrops collettii'
'Captorhinus illinoisensis is a subjective synonym of Clepsydrops vinslovii'
'Clepsydrops belongs to Ophiacodontidae'
'Clepsydrops collettii belongs to Clepsydrops'
'Clepsydrops leptocephalus is a subjective synonym of Ophiacodon retroversus'
'Clepsydrops limbatus is recombined as Dimetrodon limbatus'
'Clepsydrops macrospondylus is recombined as Dimetrodon macrospondylus'
'Clepsydrops natalis is recombined as Dimetrodon natalis'
'Clepsydrops pedunculatus is a subjective synonym of Clepsydrops collettii'
'Clepsydrops vinslovii belongs to Clepsydrops'
'Datheosaurus is a subjective synonym of Haptodus'
'Datheosaurus macrourus is recombined as Haptodus macrourus'
'Dimetrodon cruciger is recombined as Edaphosaurus cruciger'
'Dimetrodon navajovicus is recombined as Ophiacodon navajovicus'
'Edaphosauria belongs to Pelycosauria'
'Edaphosaurus belongs to Edaphosauridae'
'Eothyrididae belongs to Ophiacodontia'
'Eumatthevia is a subjective synonym of Mycterosaurus'
'Eumatthevia bolli is a subjective synonym of Mycterosaurus longiceps'
'Haptodontinae belongs to Sphenacodontidae'
'Haptodus belongs to Haptodontinae'
'Mycterosaurus belongs to Nitosauridae'
'Mycterosaurus longiceps belongs to Mycterosaurus'
'Naosaurus credneri is recombined as Edaphosaurus credneri'
'Naosaurus mirabilis is recombined as Edaphosaurus mirabilis'
'Naosaurus raymondi is recombined as Edaphosaurus raymondi'
'Nitosauridae belongs to Edaphosauria'
'Ophiacodon belongs to Ophiacodontidae'
'Ophiacodon major belongs to Ophiacodon'
'Ophiacodon mirus belongs to Ophiacodon'
'Ophiacodontia belongs to Pelycosauria'
'Palaeohatteria is a subjective synonym of Haptodus'
'Palaeohatteria longicaudata belongs to Palaeohatteria' according to Credner 1888
'Palaeohatteria longicaudata is recombined as Haptodus longicaudatus'
'Pantelosaurus is a subjective synonym of Haptodus'
'Pantelosaurus saxonicus belongs to Pantelosaurus' according to v. Huene 1925
'Pantelosaurus saxonicus is recombined as Haptodus saxonicus'
'Pelycosauria belongs to Synapsida'
'Poecilospondylus is a subjective synonym of Varanosaurus'
'Poecilospondylus francisi is a subjective synonym of Varanosaurus acutirostris'
'Poliosauridae is an invalid subgroup of Ophiacodontia'
'Poliosaurus is a subjective synonym of Ophiacodon'
'Secodontosaurinae belongs to Sphenacodontidae'
'Sphenacodontia belongs to Pelycosauria'
'Tetraceratops belongs to Eothyrididae'
'Tetraceratops insignis belongs to Tetraceratops'
'Theropleura is a subjective synonym of Ophiacodon'
'Theropleura grandis is recombined as Dimetrodon grandis'
'Theropleura retroversa is recombined as Ophiacodon retroversus'
'Theropleura triangulata is a subjective synonym of Ophiacodon retroversus'
'Theropleura uniformis is recombined as Ophiacodon uniformis'
'Therosaurus watsoni is a subjective synonym of Ophiacodon retroversus'
'Trichasaurus belongs to Edaphosauria'
'Trispondylus texensis is recombined as Trichasaurus texensis'
'Varanopsidae belongs to Sphenacodontia'
'Varanosaurus belongs to Ophiacodontidae'
'Varanosaurus acutirostris belongs to Varanosaurus'
'Varanosaurus brevirostris is recombined as Varanoops brevirostris' according to Williston 1914
'Winfieldia is a subjective synonym of Ophiacodon'
'Winfieldia hilli is recombined as Ophiacodon hilli'