Serpentes see Suborder Serpentes Linnaeus, 1758
   Scolecophidia Duméril & Bibron, 1844 [paraphyletic] see Infraorder Scolecophidia Duméril & Bibron, 1844
     1 Family Anomalepididae Taylor, 1939
     2.1.1 Family Leptotyphlopidae Stejneger, 1891 - slender blind snakes
     2.1.2.1 Family Gerrhopilidae Vidal, Wynn, Donnellan & Hedges, 2010 [monotypic]
     2.1.2.2.1 Family Xenotyphlopidae Vidal, Vences, Branch & Hedges, 2010 [monotypic]
     2.1.2.2.2 Family Typhlopidae Merrem, 1820 - blind snakes