Theropoda Marsh 1881 [Gauthier 1986] see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020] Neotheropoda Bakker 1986 [Sereno 1998] Averostra Paul 2002 †Ceratosauria Marsh 1895 [Rowe & Gauthier 1990] Genus †Ceratosaurus Marsh, 1884 †Ceratosaurus nasicornis Marsh, 1884