Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
   Suborder †Theropoda Marsh, 1881 see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
     Infraorder †Coelurosauria Huene, 1914 see Division Coelurosauria Huene, 1914
       Family †Ornithomimidae Marsh, 1890
         Genus †Dromiceiomimus Russell, 1972 see Genus Ornithomimus Marsh, 1890
         Genus †Elaphrosaurus Janensch, 1920
         Genus †Gallimimus Osmólska, Roniewicz & Barsbold, 1972
         Genus †Ornithomimus Marsh, 1890
         Genus †Struthiomimus Osborn, 1917