[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryota Whittaker & Margulis, 1978 see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Bilateria Hatschek, 1888 - bilaterians
         Infrakingdom Protostomia Grobben, 1908
           Superphylum Spiralia Schleip, 1929
             Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
               Subphylum Rhabditophora Ehlers, 1985
                 Class Neoophora
                   Subclass Neodermata
                     Infraclass Trematoda Rudolphi, 1808
                       1 Order Aspidogastrida Dollfus, 1958
                       2 Order Diplostomida Olson, Cribb, Tkach, Bray & Littlewood, 2003
                       3 Order Plagiorchiida La Rue, 1957
                       4 Order Stichocotylida Gibson & Chinabut, 1984