Order †Ornithischia Seeley, 1887 Parvorder †Genasauria Sereno, 1986 see Clade Genasauria Sereno 1986 Nanorder †Thyreophora Nopcsa, 1915 see Suborder Thyreophora Nopcsa, 1915 1 Genus †Scutellosaurus Colbert, 1981 2 Hypoorder †Thyreophoroidea Nopcsa, 1928 see [unranked] Thyreophoroidea Nopcsa, 1928