Serpentes see Suborder Serpentes Linnaeus, 1758
   Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923
     1 Henophidia Hoffstetter, 1939 [paraphyletic] see Parvorder Henophidia Hoffstetter, 1939
     1.n Caenophidia Hoffstetter, 1939