Ophidia Brongniart, 1800
   Serpentes see Suborder Serpentes Linnaeus, 1758
     Scolecophidia Duméril & Bibron, 1844 see Infraorder Scolecophidia Duméril & Bibron, 1844
       1 Family Anomalepididae Taylor, 1939
       2 Family Gerrhopilidae Vidal, Wynn, Donnellan & Hedges, 2010 [monotypic]
       3 Family Leptotyphlopidae Stejneger, 1891 - slender blind snakes
       4 Family Typhlopidae Merrem, 1820 - blind snakes
       5 Family Xenotyphlopidae Vidal, Vences, Branch & Hedges, 2010 [monotypic]