Squamata Oppel 1811 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval. see Order Squamata Oppel, 1811
   Scincoidea Oppel, 1811 see Infraorder Scincoidea Oppel, 1811
     Family Xantusiidae Baird, 1859 - night lizards
       1 Subfamily Cricosaurinae [monotypic]
       2.1 Subfamily Xantusiinae [monotypic]
       2.2 Subfamily Lepidophyminae [monotypic]