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 †Ankylosauria Osborn 1923 see Infraorder Ankylosauria Osborn, 1923 1 †Ankylosauridae Brown 1908 see Family Ankylosauridae Brown, 1908 2 †Nodosauridae Marsh 1890 see Family Nodosauridae Marsh, 1890