Troglotrematoidea Rodzina Orchipedidae Mammorchipedum isostomum (Rudolphi, 1819) Orchipedum tracheicola Braun, 1901
Xiphidiata Olson, Cribb, Tkach, Bray & Littlewood, 2003 Allocreadioidea Looss, 1902 Rodzina AllocreadiidaeLooss, 1902 Allocreadium dogieli Koval, 1850 Allocreadium isoporum (Looss, 1894) Allocreadium markevitschii Koval, 1949 Bunodera luciopercae (Muller, 1776) Crepidostomus farionis (Muller, 1784) Crepidostomus metoecus (Braun, 1900) Orientocreadium pseudobagri Yamaguti, 1934 Orientocreadium siluri Dubinina et Bychowsky, 1954
Rodzina Opecoelidae Ozaki, 1925 Nicolla skrjabini (Ivanitzky, 1928) Nicolla wisniewskii (Ślusarski, 1958) Plagioporus angulatus (Dujardin, 1845) Plagioporus stefanskii Ślusarski, 1958 Sphaerostoma bramae (Muller, 1776) Sphaerostoma globiporum (Rudolphi, 1802) Sphaerostoma maius Janiszewska, 1949 Sphaerostoma salmonis Ślusarski, 1958