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 Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
             Order Tricladida Lang, 1884
               Suborder Paludicola Hallez, 1892 see [unranked] Paludicola Hallez, 1892
                 1 Family Planariidae Stimpson, 1857
                 2 Family Dugesiidae Ball, 1974
                 3 Family Dendrocoelidae Hallez, 1892