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
           1 †Ceratosaurus nasicornis Marsh, 1884