Ophidia Brongniart, 1800
Count: [f†f] 39f; †9f [6 Oct 2016]
   Serpentes see Suborder Serpentes Linnaeus, 1758
  Count: [f†f] 39f; †6f [6 Oct 2016]
     Alethinophidia Nopcsa, 1923 see Infraorder Alethinophidia Nopcsa, 1923
    Count: [f†f] 34f; †4f [6 Oct 2016]
       Henophidia Hoffstetter, 1939 see Parvorder Henophidia Hoffstetter, 1939
      Count: [f] 10f [7 Oct 2016]
         Bolyerioidea Hoffstetter, 1946
        Count: [f] 3f [7 Oct 2016]
           1 Family Tropidophiidae Brongersma, 1951
          Count: -
           2 Family Bolyeriidae Hoffstetter, 1946
          Count: -
           3 Family Xenophidiidae Wallach & Günther, 1998 [monotypic]
          Count: -