Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Platy-helminthes see Phylum Platyhelminthes Gegenbaur, 1859
           Class Trematoda Rudolphi, 1808 - flukes see Infraclass Trematoda Rudolphi, 1808
             Subclass Digena see Subclass Digenea Carus, 1863
               1 Family Fasciolidae Railliet, 1895
               2 Family Dicrocoeliidae Odhner, 1910
               3 Family Opisthorchidae see Family Opisthorchiidae Lühe, 1901
               4 Family Echinostomatidae Looss, 1902
               5 Family Heterophyidae Odhner, 1914
               6 Family Troglotrematidae Odhner, 1914
               7 Family Schistosomidae see Family Schistosomatidae Looss, 1899
               8 Family Brachylaemidae Joyeux & Foley, 1930 see Family Brachylaimidae Joyeux & Foley, 1930