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
         Superphylum Articulata Cuvier see Supraphylum Articulata Cuvier
           Phylum Arthropoda Siebold, 1848 - arthropods
             Subphylum †Trilobita (Walch, 1771)
               Order †Ptychopariida Swinnerton, 1915
                 Genus †Asaphus Brongniart, 1822
                 Genus †Illaenus Dalman, 1827
                 Genus †Olenus Dalman, 1826