†suborder Seymouriamorpha Watson 1917 (tetrapod)
Osteichthyes - Seymouriamorpha
Alternative spelling: Seymouria
Parent taxon: Batrachosauria according to J. A. Gauthier et al. 1988
See also Carroll 1988, Carroll et al. 1972, Efremov 1946, Gauthier et al. 1989, Haubold 1971, Huene 1954, Kuhn 1946, Lewis and Vaughn 1965, Martens et al. 2005, Olson 1947, Roxo 1937 and Thurmond and Jones 1981
Sister taxon: Cotylosauria
Subtaxa: Adenoderma Chronisuchidae Discosauriscidae Kotlassidae Kotlassioidea Leptorophida Promelanerpeton Sauravidae Seymourioidea Waggonerida
Ecology: