living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Cnidaria Hatschek, 1888 - cnidarians
           Class Scyphozoa Goette, 1887 - jellyfish
             Order Rhizostomeae Cuvier, 1799 - root-mouth jellies
               Family Cepheidae Agassiz, 1862
                 1 Genus Cephea Péron & Lesueur, 1810
                 2 Genus Cotylorhiza L. Agassiz, 1862
                 3 Genus Netrostoma L.S. Schultze, 1898
                 4 Genus Polyrhiza L. Agassiz, 1862