Order †Parareptilia (Lawrence, 1868) see Subclass Parareptilia Olson, 1947 †Pareiasauromorpha Tsuji, Müller & Reisz 2012 Suborder †Pareiasauria Seeley, 1888 Genus †Sanchuansaurus Gao, 1989 1 †Sanchuansaurus pygmaeus Gao, 1989