vertebrates Cuvier, 1812 - vertebrates
Status: extant
   Cohort Amniota Haeckel, 1866 see Clade Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988]
  Status: extant
     Class "Reptilia" Linnaeus, 1758 - reptiles
    Status: extant
       Subclass Sauropsida Huxley, 1864
      Status: extant
         Superorder Archosauria Cope, 1869 - archosaurs see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
        Status: extant
           Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
          Status: fossil
             Suborder †Theropoda Marsh, 1881 see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
            Status: fossil
               Infraorder †Carnosauria Huene, 1920 see Division Carnosauria Huene, 1920
              Status: fossil
                 Family †Megalosauridae Fitzinger, 1843
                Status: fossil