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 Subfamily Xantusiinae [monotypic] Genus Xantusia Baird, 1858