Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801 Class Reptilia Linnaeus, 1758 - reptiles Subclass †Synapsida Osborn, 1903 - synapsids see Class Synapsida Osborn, 1903 Order †Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905 Suborder †Dicynodontia Owen, 1859 see [unranked] Dicynodontia Owen, 1859