living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
           Class Trematoda Rudolphi, 1808 - flukes see Infraclass Trematoda Rudolphi, 1808
             Subclass Digenea Carus, 1863
               Order Plagiorchiida La Rue, 1957
                 Suborder Allocreadiata
                   Superfamily Lepocreadioidea Odhner, 1905
                     1 Family Lepocreadiidae Nicoll, 1934
                     2 Family Homalometridae H.R. Mehra, 1962
                     3 Family Deropristiidae H.R. Mehra, 1962
                     4 Family Pleorchiidae
                     5 Family Maseniidae (Chatterji, 1933) Gupta, 1953
                     6 Family Gorgocephalidae Manter, 1966