Kingdom Animalia Linnaeus, 1758 - animals Phylum Cnidaria Hatschek, 1888 - cnidarians Class Hydrozoa Owen, 1843 Order Hydroida Johnston, 1836 - hydroids see Order Anthoathecatae 1 Suborder Anthomedusae see Order Anthoathecatae 2 Suborder Leptomedusae see Order Leptothecatae