Amniota - Synapsida

Parent taxon: Eupelycosauria according to R. R. Reisz 1986

Sister taxa: Edaphosauridae, Sphenacodontia, Varanopidae

Subtaxa: Archaeothyris, Clepsydrops, Echinerpeton, Ophiacodon, Varanosaurus

View classification

Ecology: