Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
               Infraclass Archosauromorpha Huene, 1946 see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
                 Superorder Archosauria Cope, 1869 - archosaurs see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
                   †Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
                     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]
                         Family †Ornithomimidae Marsh, 1890
                           01 Genus †Archaeornithomimus Russell, 1972
                           02 ?Genus †Betasuchus Huene, 1932, nom. dub.
                           03 Genus †Dromiceiomimus Russell, 1972 see Genus Ornithomimus Marsh, 1890
                           04 Genus †Coelosaurus Leidy, 1865, nom. dub.
                           05 Genus †Ornithomimus Marsh, 1890
                           06 Genus †Struthiomimus Osborn, 1917
                           07 Genus †Elaphrosaurus Janensch, 1920
                           08 Genus †Gallimimius Carroll, 1988, orth. inval. see Genus Gallimimus Osmólska, Roniewicz & Barsbold, 1972
                           09 Genus †Garudimimus Barsbold, 1981
                           10 Genus †Tugulusaurus Dong, 1973