Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Class Reptilia Linnaeus, 1758 - reptiles
       Subclass Lepidosauria Duméril & Bibron, 1839
         Order Squamata Oppel, 1811
           Suborder Sauria McCartney, 1802 - lizards see Clade Sauria Macartney 1802 [Gauthier & de Queiroz 2020]
             Family Agamidae Spix, 1825 - agamas
             Family †Aigialosauridae Kramberger, 1892 - aigialosaurs
             Family Anguidae Gray, 1825 - glass lizards and alligator lizards
             Family Anniellidae Cope, 1864 - American legless lizards
             Family †Ardeosauridae Camp, 1923
             Family †Bavarisauridae Kuhn, 1961
             Family †Broilisauridae Hoffstetter, 1955
             Family †Carusiidae Borsuk-Bialynicka, 1987
             Family Chamaeleontidae see Family Chamaeleonidae Rafinesque, 1815
             Family †Changjiangidae Hou, 1976
             Family Cordylidae Fitzinger, 1826 - spinytail lizards
             Family Dibamidae Boulenger, 1884 - blind lizards
             Family †Dolichosauridae Gervais, 1852 - dolichosaurs
             Family †Euposauridae Camp, 1923
             Family †Fulengidae Carroll & Galton, 1977
             Family Gekkonidae Oppel, 1811 - geckoes
             Family Helodermatidae Gray, 1837 - Gila monsters
             Family Iguanidae Oppel, 1811 - iguanas
             Family †Kuehneosauridae Romer, 1966
             Family Lacertidae Oppel, 1811 - wall lizards
             Family Lanthanotidae Steindachner, 1877 - earless monitors
             Family †Macrocephalosauridae Sulimski, 1975
             Family †Mosasauridae Gervais, 1853 - mosasaurs
             Family †Necrosauridae Hoffstetter, 1943
             Family †Paramacellodidae Estes, 1983
             Family †Parasaniwidae Estes, 1964
             Family Pygopodidae Gray, 1845 - Australasian legless lizards
             Family Scincidae Oppel, 1811 - skinks
             Family Teiidae Gray, 1827 - whiptails and tegus
             Family Varanidae Gray, 1827 - monitor lizards
             Family Xantusiidae Baird, 1859 - night lizards
             Family Xenosauridae Cope, 1866