living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
  Status: extant
     Kingdom Animalia Linnaeus, 1758 - animals
    Status: extant
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
      Status: extant
         Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
        Status: extant
           Class Trematoda Rudolphi, 1808 - flukes see Infraclass Trematoda Rudolphi, 1808
          Status: extant
             Subclass Digenea Carus, 1863
            Status: extant
               Order Opisthorchiida
              Status: extant
                 Suborder Opisthorchiata La Rue, 1957
                Status: extant
                   Superfamily Opisthorchioidea Looss, 1899
                  Status: extant
                     Family Tetracladiidae
                    Status: extant
                       Genus Tetracladium Kulachkova, 1954
                      Status: extant