Cnidaria Hatschek, 1888 - cnidarians Class Hydrozoa Owen, 1843 Order Hydroida Johnston, 1836 - hydroids see Order Anthoathecatae Family Campanulariidae Hincks, 1868 Genus Thyroscyphus Allman, 1876 Thyroscyphus fruticosus (Esper, 1793) Mammen, 1965