Invalid subtaxa: Anaschima Branson 1905 [nomen dubium], Anaschisma Branson 1905 [nomen dubium], Anaschisma brachygnatha Branson 1905 [nomen dubium], Anaschisma browni Branson 1905 [nomen dubium], Dictyocephalus Leidy 1856 [nomen dubium], Eupelor Cope 1868 [nomen dubium], Eupelor durus Cope 1866 [nomen dubium], Mastodonsaurus durus Cope 1866 [nomen dubium], Metoposaurus browni Branson 1905 [nomen dubium], Metoposaurus durus Cope 1866 [nomen dubium], Metoposaurus fraasi Lucas 1904 [nomen dubium], Metoposaurus hoffmani Dutuit 1978 [nomen dubium], Metoposaurus jonesi Case 1920 [nomen dubium]
Full reference: D. M. S. Watson. 1919. The Structure, Evolution and Origin of the Amphibia. The "Orders" Rachitomi and Stereospondyli. Philosophical Transactions of the Royal Society of London, Series B 209:1-73
Parent taxon: Trematosauroidea according to R. R. Schoch 2013
Sister taxa: Almasauridae, Callistomordax, Lyrocephaliscidae, Peltostega, Platystegidae, Thoosuchus, Trematosauridae, Wetlugasauridae
Subtaxa: Apachesaurus, Bogdania, Dutuitosaurus, Koskinonodon, Metoposaurus
Type: Metoposaurus
Ecology: amphibious carnivore