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 Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
             Superorder Neoophora see Class Neoophora
               Order Seriata
                 Suborder Tricladida Lang, 1884 see Order Tricladida Lang, 1884
                   Paludicola Hallez, 1892
                     1 Genus Crenobia Kenk, 1930
                     2 Genus Polycelis Ehrenberg, 1831
                     3 Genus Bdellocephala Man, [1874]
                     4 Genus Dendrocoelum Örsted, 1844
                     5 Genus Planaria Müller, 1776
                     6 Genus Fonticola Komárek, 1926
                     7 Genus Dugesia Girard, 1850