Osteichthyes - Synapsida - Sphenacodontidae
Full reference: E. D. Cope. 1878. Descriptions of extinct Batrachia and Reptilia from the Permian formations of Texas. Proceedings of the American Philosophical Society 17:505-530
Parent taxon: Sphenacodontinae according to D. S. Berman 1977
Sister taxa: Macromerion, Neosaurus, Sphenacodon
Subtaxa: Dimetrodon angelensis, Dimetrodon booneorum, Dimetrodon dollovianus, Dimetrodon gigas, Dimetrodon gigashomogenes, Dimetrodon grandis, Dimetrodon incisivus, Dimetrodon kempae, Dimetrodon limbatus, Dimetrodon loomisi, Dimetrodon macrospondylus, Dimetrodon maximus, Dimetrodon milleri, Dimetrodon natalis, Dimetrodon obtusidens, Dimetrodon occidentalis, Dimetrodon platycentrus, Dimetrodon rectiformis, Dimetrodon semiradicatus, Dimetrodon teutonis
Ecology: