Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
               Infraclass Lepidosauromorpha Benton, 1983 see Subclass Lepidosauromorpha Benton, 1983
                 Superorder Lepidosauria Haeckel, 1866 see Superorder Lepidosauriformes Gauthier, Estes & de Queiroz, 1988
                   Order Squamata Oppel, 1811
                     Suborder Lacertilia Owen, 1842
                       Infraorder Leptoglossa see Infraorder Scincomorpha Camp, 1923
                         1 Family †Paramacellodidae Estes, 1983
                         2 Family Xantusiidae Baird, 1859 - night lizards
                         3 Family Teiidae Gray, 1827 - whiptails and tegus
                         4 Family Scincidae Oppel, 1811 - skinks
                         5 Family Lacertidae Oppel, 1811 - wall lizards
                         6 Family Cordylidae Fitzinger, 1826 - spinytail lizards
                         7 Family Dibamidae Boulenger, 1884 - blind lizards