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
             Serpentes see Suborder Serpentes Linnaeus, 1758
               Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923
                 Afrophidia Vidal, Delmas & Hedges, 2007
                   Boas Gray, 1825 - pythons and boas
                     Subfamily Ungaliophiinae McDowell, 1987
                       1 Genus Ungaliophis Müller, 1880
                       2 Genus Exiliboa Bogert, 1968 [monotypic]