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 Hydrozoa Owen, 1843
             Order Hydroida Johnston, 1836 - hydroids see Order Anthoathecatae
               Suborder Limnomedusae Kramp, 1938 see Order Limnomedusae Kramp, 1938
                 Family Olindiidae Haeckel, 1879
                   1 Genus Monobrachium Mereschkowsky, 1877
                   2 Genus Microhydrula Valkanov, 1965
                   3 Genus Craspedacusta Lankester, 1880
                   4 Genus Rhaptapagis Bouillon & Deroux, 1967
                   5 Genus Olindias Müller, 1861