Xiphidiata
Xiphidiata is a suborder of Plagiorchiida, an order of parasitic flatworms.
The following superfamilies are in the suborder Xiphidiata:
- Brachycladioidea Odhner, 1905
- Gorgoderoidea Looss, 1901
- Microphalloidea Ward, 1901
- Opecoeloidea Ozaki, 1925
- Plagiorchioidea Lühe, 1901
- Troglotrematoidea Odhner, 1914