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 Archoophora see Class Turbellaria Ehrenberg, 1831
               Order Polycladida Lang, 1884
                 Genus Stylochus Ehrenberg, 1831
                   Stylochus pilidium (Goette, 1881) see Stylochus pillidum (Goette, 1881) Lang, 1884