Squamata Oppel 1811 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval. see Order Squamata Oppel, 1811 Episquamata Vidal & Hedges, 2005 Toxicofera Vidal & Hedges, 2005 Anguimorpha Fürbringer, 1900 see Suborder Anguimorpha Fürbringer, 1900 Family Xenosauridae Cope, 1866 [monotypic] Genus Xenosaurus Peters, 1861