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 Scleractinia Bourne, 1900 Genus Acropora Oken, 1815 Acropora cervicornis (Lamarck, 1816) - staghorn coral