†unranked clade Seymouriamorphoidea (tetrapod)
Parent taxon: Anthracosauria according to R. L. Carroll et al. 1972
Sister taxa: Diplomeri, Embolomera, Eoherpetontidae, Gephyrostegida, Gephyrostegoidea, Lanthanosuchidae, Limnoscelidae, Mauchchunkiidae, Nycteroleteridae, Proterogyrinidae, Schizomeri, Seymouriamorpha, Solenodonsauridae, Tokosauridae, Tseajaiidae, Seymourida, Lanthanosuchida, Chroniosuchida, Nycteroleterida
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Seymouriamorphoidea in the database