Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
   Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
     Eubilateria Ax, 1987 see Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
       Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans
         1 Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
         2 [Phylum] Nemertea Schultze, 1851 - ribbon worms