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
       Tetanurae Gauthier 1986
         Orionides Carrano, Benson & Sampson 2012
           Avetheropoda Paul 1988 [Padian et al. 1999]
             Coelurosauria Huene 1914 [Gauthier 1986]
               Maniraptoriformes Holtz 1995 [Holtz 1996]
                 †Ornithomimosauria Barsbold 1976 [Osmólska 1997]
                   †Ornithomimidae Marsh 1890 [Sereno 1998] see Family Ornithomimidae Marsh, 1890
                     1 Genus †Sinornithomimus Kobayashi & Lü, 2003
                     2.1 Genus †Gallimimus Osmólska, Roniewicz & Barsbold, 1972
                     2.2.1 Genus †Ornithomimus Marsh, 1890
                     2.2.2 Genus †Struthiomimus Osborn, 1917