Order Squamata Oppel, 1811
   Suborder Serpentes Linnaeus, 1758 - snakes
     Infraorder Alethinophidia Nopcsa, 1923
       Parvorder Henophidia Hoffstetter, 1939
         Superfamily Anilioidea Stejneger, 1907
           1 Family Aniliidae Stejneger, 1907 - cylinder snakes
           2 Family Uropeltidae Müller, 1831 - shield-tail snakes