| image = Dimetrodon8DB.jpg | image_width = 235px | image_caption = Restoration of Dimetrodon grandis | regnum = Animalia | phylum = Chordata | superclassis = Tetrapoda | classis = Synapsida | ordo = Pelycosauria | subordo = Eupelycosauria | familia = Sphenacodontidae | genus = Dimetrodon | genus_authority = Cope, 1878 | subdivision_ranks = Species | subdivision = D. angelensis Olson, 1962 D. booneorum Romer, 1937 D. dollovianus Cope, 1888 D. fritillus Cope, 1878 D. gigas Sternberg, 1942… (More on Dimetrodon)