T. D. Swain, “Isozoanthus antumbrosus, a new species of zoanthid (Cnidaria: Anthozoa: Zoanthidea) symbiotic with Hydrozoa from the Caribbean, with a key to hydroid and sponge-symbiotic zoanthid species”, Zootaxa, vol. 2051, no. 1, pp. 41–48, Mar. 2009.