vertebrates Cuvier, 1812 - vertebrates
   Cohort Amniota Haeckel, 1866 see Clade Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988]
     Class "Reptilia" Linnaeus, 1758 - reptiles
       Subclass Sauropsida Huxley, 1864
         1 Superorder Lepidosauria Haeckel, 1866 see Superorder Lepidosauriformes Gauthier, Estes & de Queiroz, 1988
         2 Superorder Archosauria Cope, 1869 - archosaurs see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
         3 Superorder †Euryapsida Colbert, 1945