Class Reptilia Linnaeus, 1758 - reptiles
   Subclass Lepidosauria Duméril & Bibron, 1839
     Order Squamata Oppel, 1811
       Suborder Ophidia Latreille, 1804
         Superfamily Typhlopoidea Merrem, 1820
           1 Family Typhlopidae Merrem, 1820 - blind snakes
           2 Family Leptotyphlopidae Stejneger, 1891 - slender blind snakes