Superfamily Tropidophioidea Brongersma, 1951
   Family Xenophidiidae Wallach & Günther, 1998 [monotypic]
     Genus Xenophidionᵀ Günther & Manthey, 1995
       1 Xenophidion acanthognathusᵀ Günther & Manthey, 1995
       2 Xenophidion schaeferi Günther & Manthey, 1995