Squamata Oppel 1811 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval. see Order Squamata Oppel, 1811
   Episquamata Vidal & Hedges, 2005
     Toxicofera Vidal & Hedges, 2005
       Serpentes see Suborder Serpentes Linnaeus, 1758
         Family Tropidophiidae Brongersma, 1951
           1 Genus Trachyboa Peters, 1860
           2 Genus Tropidophis Bibron, 1840