[Animalia] Linnaeus, 1758 - animals
   Phylum Cnidaria Hatschek, 1888 - cnidarians
     Hydrozoa Owen, 1843
       1 Family †Conchopeltidae
       2 [Siphonophora] Eschscholtz, 1829 - siphonophorans
       3 Genus Aglantha Haeckel, 1879
       4 Genus Lovenella Hincks, 1869
       5 Genus Obelia Péron & Lesueur, 1810
       6 Genus Phyalidium see Genus Phialidium Leuckart, 1856