Kingdom Animalia Linnaeus, 1758 - animals Phylum Cnidaria Hatschek, 1888 - cnidarians Class Hydrozoa Owen, 1843 Order Actinulida Swedmark & Teissier, 1959 - actinulidans see Suborder Actinulida Swedmark & Teissier, 1959 Genus Halammohydra Remane, 1927