Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020] †Ornithischia Seeley 1887 [Padian & May 1993] see Order Ornithischia Seeley, 1887 †Genasauria Sereno 1986 †Thyreophora Nopcsa 1915 see Suborder Thyreophora Nopcsa, 1915 †Eurypoda Sereno 1986 †Stegosauria Marsh 1877 see Infraorder Stegosauria Marsh, 1877 †Stegosauridae Marsh 1880 see Family Stegosauridae Marsh, 1880 †Stegosaurinae Abel 1919 Genus †Stegosaurus Marsh, 1877