Lepidosauria Haeckel 1866 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval. see Class Lepidosauria Haeckel, 1866
   Order Squamata Oppel, 1811
     Bifurcata Vidal & Hedges, 2005
       Unidentata Vidal & Hedges, 2005
         Episquamata Vidal & Hedges, 2005
           Toxicofera Vidal & Hedges, 2005
             Anguimorpha Fürbringer, 1900 see Suborder Anguimorpha Fürbringer, 1900
               Neoanguimorpha Vidal & Hedges, 2009
                 1 Superfamily Xenosauroidea Cope, 1866 [monotypic]
                 2 Superfamily Helodermatoidea Gray, 1837 [monotypic]
                 3 Superfamily Anguioidea Gray, 1825 see Superfamily Anguoidea Gray, 1825