Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   Opisthokonta Cavalier-Smith, 1987 - opisthokonts see Clade Opisthokonta Cavalier-Smith 1987, nom. cl. inval.
     Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
       Eumetazoa Bütschli, 1910 - eumetazoans
         Triploblastica see [unranked] Bilateria Hatschek, 1888
           Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
             Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
               Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans
                 Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929
                   Trochozoa Beklemischev, 1944 - trochozoans
                     Phylum Mollusca Linnaeus, 1758 - molluscs
                       Eumollusca
                         Class Polyplacophora Blainville, 1816 - chitons
                           Order Neoloricata Bergenhayn, 1955 see Subclass Neoloricata Bergenhayn, 1955
                             Suborder Ischnochitonina Bergenhayn, 1930 see Suborder Chitonina Thiele, 1909
                               1 Genus Chaetopleura Shuttleworth, 1853
                               2 Genus Chiton Linnaeus, 1758
                               3 Genus Katharina Gray, 1847
                               4 Genus Lepidochitona Gray, 1821
                               5 Genus Mopalia Gray, 1847
                               6 Genus Nuttallina Dall, 1871
                               7 Genus Placiphorella Dall, 1879