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
                   1 Phylum Nemertea Schultze, 1851 - ribbon worms
                   2 Trochozoa Beklemischev, 1944 - trochozoans
                   3.1 ?Phylum Dicyemida van Beneden, 1876 - dicyemids see Order Dicyemida van Beneden, 1876
                   3.2 Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
                   4 Superphylum Gnathifera Ahlrichs, 1995 - gnathiferans see [unranked] Gnathifera Ahlrichs, 1995