Serpentes see Suborder Serpentes Linnaeus, 1758 Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923 Amerophidia Vidal, Delmas & Hedges, 2007 1 Family Aniliidae Stejneger, 1907 [monotypic] - cylinder snakes 2 Family Tropidophiidae Brongersma, 1951