Synonym: Mastodonsauroidea Lydekker 1885
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: Capitosauria according to R. R. Schoch 2013
See also Carroll 1988, Damiani 2001, Haubold 1971, Haubold 1974, Kuhn 1971, Schoch 1999, Schoch 2000, Schoch and Milner 2000, Shishkin et al. 2000 and Yates and Warren 2000
Sister taxa: Benthosuchus, Calmasuchus, Edingerella, Sclerothoracidae, Tomeia, Vladlenosaurus, Warrenisuchus, Watsonisuchus, Wetlugasaurus
Subtaxa: Abiadisaurus Antarctosuchus Benthosuchidae Bogdania fragmenta Capitosauroides Cyclotosauridae Cyclotosaurus albertyni Deltacephalidae Eocyclotosaurus Eryosuchidae Eryosuchus Heylerosauridae Mastodonsauridae Mastodonsaurus Mastodonsaurus silesiacus Mentosaurus Meyerosuchus Odenwaldia Paracyclotosauridae Paracyclotosaurus Parotosaurus turfanensis Parotosuchidae Parotosuchus Promastodonsaurus Rewanobatrachus Yarengia Yarengiidae