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 Semaeostomeae - flag-mouth jellies
               Family Ulmariidae Haeckel, 1879 see Family Ulmaridae Haeckel, 1879
                 Genus Stygiomedusa Russell, 1959