†suborder Gymnarthriformes Hay 1930 (tetrapod)
Synonym: Gymnarthria Case 1910 [replaced name]
Full reference: O. P. Hay. 1930. Second Bibliography and Catalogue of the Fossil Vertebrata of North America 390(II):1-1074
Parent taxon: Cotylosauria according to O. P. Hay 1930
See also Case 1910
Sister taxa: Amniota, Archeria, Bathyglyptus, Captorhiniformes, Captorhinomorpha, Chamasaurus, Conodectiformes, Datheosauri, Diadectiformes, Diadectomorpha, Diadectosauria, Gilmoreichnus, Labidosauria, Limnoscelia, Pantyliformes, Pantyloidea, Pareiasauriformes, Procolophonipus, Sauraviformes, Solenodonsauridae, Tomicosaurus, Trilophosauria, Varanopus
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Gymnarthriformes in the database