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
         Phylum Cnidaria Hatschek, 1888 - cnidarians
           Medusozoa Petersen, 1979 see Subphylum Medusozoa Petersen, 1979
             Class Scyphozoa Goette, 1887 - jellyfish
               1 Order Semaeostomeae - flag-mouth jellies
               2 Order Rhizostomeae Cuvier, 1799 - root-mouth jellies
               3 Order Cubomedusae Haeckel, 1877 - box jellies see Class Cubozoa Werner, 1975
               4 Order Coronatae Vanhöffen, 1892
               5 Order Stauromedusae Haeckel, 1879 - stalked jellies