Cranosina coronata

Cranosina coronata (Hincks, 1881) (Fig. 4A, B) Membranipora coronata Hincks, 1881, p. 147, pl. 10, fig. 1. Setosellina coronata: Harmer 1926, p. 265, pl. 16, figs 2 ��� 4. Cranosina coronata: Tilbrook 2006, p. 25, pl. 2e; Taylor & Tan 2015, p. 12, fig. 6; Dick & Grischenko 2017, p. 63, fig. 6e, f. For other synonyms and records, see Harmer (1926) and Tilbrook (2006). Material examined. VNMN-0215 (CT-5), on SEM stub; VNMN-0216, four colony fragments. Measurements. AzL, 0.49���0.65 (0.573 �� 0.048); AzW, 0.32���0.50 (0.409 �� 0.047); OpL, 0.19���0.48 (0.391 �� 0.071); OpW, 0.15���0.27 (0.212 �� 0.033); AvRL, 0.08���0.22 (0.178 �� 0.036); AvRW, 0.09���0.18 (0.122 �� 0.028) (n = 15, 1). Description. Colony unilaminar, encrusting, sheet-like. Zooids distinct, delineated by deep groove; often widest at, or proximal to, middle. Cryptocyst extensive, comprising wide, rounded mural rim, granulated on sides and top, with coarse ridges perpendicular to opesia on inside of mural rim; mural rim smooth laterally and distally in opercular region. Opesia extensive, often irregular in outline. Avicularium distal to each zooid, distal end of rostrum forming semi-cylindrical channel to house setose mandible, directed laterally or slightly distolaterally. Spines lacking. Ooecia lacking; zooids use internal sac for brooding. Distribution. This species is broadly distributed in the Indo-West Pacific region, occurring from East Africa and the Red Sea to Indonesia, the Great Barrier Reef, New Guinea, Singapore, Malaysia, Vanuatu, the Solomon Islands, Vietnam, the Philippines, and Japan (Chimonides & Cook 1994; Tilbrook et al. 2001; Tilbrook 2006; Taylor & Tan 2015; Dick & Grischenko 2017; this study).
Published as part of Dick, Matthew H., Ngai, Nguyen Danh & Doan, Hung Dinh, 2020, Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam, pp. 201-252 in Zootaxa 4747 (2) on page 209, DOI: 10.11646/zootaxa.4747.2.1, http://zenodo.org/record/3694740
{"references":["Hincks, T. (1881) Contributions towards a general history of the marine Polyzoa. IV. Foreign Membraniporina (second series). Annals and Magazine of Natural History, Series 5, 7, 147 - 156, pls. 8 - 10. https: // doi. org / 10.1080 / 00222938109459489","Harmer, S. F. (1926) The Polyzoa of the Siboga Expedition, part 2, Cheilostomata Anasca. Siboga Expedition Reports, 28 b, v-vii + 183 - 501, pls. 13 - 34.","Tilbrook, K. J. (2006) Cheilostomatous Bryozoa of the Solomon Islands. Santa Barbara Museum of Natural History, Santa Barbara, 386 pp.","Taylor, P. D. & Tan, S. - H. A. (2015) Cheilostome Bryozoa from Penang and Langkawi, Malaysia. European Journal of Taxonomy, 149, 1 - 34. https: // doi. org / 10.5852 / ejt. 2015.149","Dick, M. H. & Grischenko, A. V. (2017) Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan. Journal of Natural History, 51, 141 - 266. https: // doi. org / 10.1080 / 00222933.2016.1253797","Chimonides, P. J. & Cook, P. L. (1994) Notes on the genus Cranosina (Bryozoa, Cheilostomida). Zoologica Scripta, 23, 43 - 49. https: // doi. org / 10.1111 / j. 1463 - 6409.1994. tb 00372. x","Tilbrook, K. J., Hayward, P. J. & Gordon, D. P. (2001) Cheilostomatous Bryozoa from Vanuatu. Zoological Journal of the Linnean Society, 131, 35 - 109. https: // doi. org / 10.1111 / j. 1096 - 3642.2001. tb 01309. x"]}