Kingdom Animalia Linnaeus, 1758 - animals Phylum Cnidaria Hatschek, 1888 - cnidarians Class Anthozoa Ehrenberg, 1831 Subclass Hexacorallia Haeckel, 1866 - sea anemones and true corals see Subclass Zoantharia de Blainville, 1830 Order Corallimorpharia Genus Amplexidiscus Dunn & Hamner, 1980 Genus Corynactis Allman, 1846 Genus Rhodactis Milne-Edwards & Haime, 1851 Genus Ricordea Duchassaing & Michelotti, 1860