†suborder Edaphosauria Romer and Price 1940 (pelycosaur)
Full reference: A. S. Romer and L. I. Price. 1940. Review of the Pelycosauria. Geological Society of America Special Paper 28:1-538
Parent taxon: Pelycosauria according to T. S. Kemp 1982
Sister taxa: Bathygnathus, Caseamorpha, Caseasauria, Clepsydropidae, Luperosaurus, Milosaurus, Nitosaurus, Ophiacodontia, Protoclepsydrops, Scoliomus, Thalattosauria, Trichasaurus, Xyrospondylus
Subtaxa: Galeopsidae, Nitosauridae
Ecology: