Lepidosauria Haeckel 1866 [Gauthier, Estes & de Queiroz 1988], nom. cl. inval. see Class Lepidosauria Haeckel, 1866
Count: [*] 2o;57f;12g
   Order Squamata Oppel, 1811
  Count: [*] 57f;12g [2 Mar 2017]
     Bifurcata Vidal & Hedges, 2005
    Count: [*] 56f;12g [2 Mar 2017]
       Unidentata Vidal & Hedges, 2005
      Count: [*] 49f;12g [2 Mar 2017]
         Episquamata Vidal & Hedges, 2005
        Count: [*] 45f;12g [2 Mar 2017]
           Toxicofera Vidal & Hedges, 2005
          Count: [*] 36f;9g [2 Mar 2017]
             Serpentes see Suborder Serpentes Linnaeus, 1758
            Count: [*] 25f;9g [2 Mar 2017]
               Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923
              Count: [*] 22f;9g [2 Mar 2017]
                 Afrophidia Vidal, Delmas & Hedges, 2007
                Count: [*] 20f;6g [2 Mar 2017]
                   Boas Gray, 1825 - pythons and boas
                  Count: [*] 3g
                     1 Genus Calabaria Gray, 1858
                    Count: -
                     2 Malagasy Boinae Gray, 1825 - boas see Family Boidae Gray, 1825
                    Count: -
                     3.1 "Boinae" Gray, 1825 - boas see Family Boidae Gray, 1825
                    Count: -
                     3.2 Old World erycinae Bonaparte, 1831 - sand boas see Family Erycidae Bonaparte, 1831
                    Count: -
                     3.3.1 New World erycinae Bonaparte, 1831 - sand boas see Family Erycidae Bonaparte, 1831
                    Count: -
                     3.3.2 Subfamily Ungaliophiinae McDowell, 1987
                    Count: [*] 2g [2 Mar 2017]