Cibicidoides

• Main Author: Mamo, Briony L.
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Antarctic; Pacific; New Zealand; Hatta; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.6067864; https://zenodo.org/record/6067864

Cibicidoides sp. cf. C . basilanensis McCulloch 1977 (Fig. 20:10–14) Description. Test biconvex, spiral side more strongly convex than umbilical side. Aperture slit-like, located at base of apertural face of final chamber, extending onto spiral side of test. Spiral side pitted with numerous coarse, widely spaced perforations located between raised sutures. Umbilical side has a roughened test wall with an opalescent sheen. Final one to three sutures depressed and distinct with occasional, small perforations randomly scattered across test wall. Periphery with a thick, rounded keel (Fig. 20:10–14). Remarks. The available specimens from the CG have a similar test shape and ornament to Cibicidoides basilanensis McCulloch 1977 (Haig 1997; Parker 2009), but are all incomplete (Fig. 19:20; Fig. 20:1–4) resulting in the tentative taxonomic assignment. It should be noted that several other species names have been used to describe similar specimens. Similar specimens have also been described under the name Cibicidoides sp. cf. C . subhaidingeri (Parr 1950) by Hatta & Ujiié (1992a) but Parker (2009) considered these synonymous with C . basilanensis . The main differences between C . basilanensis and other similar species lie in the concavity of the spiral side of the test, the nature of the perforate ornament and definition of the sutures on both sides of the test. For instance, specimens identified as Cibicidoides bradyi (Trauth 1918) by Debenay (2012) from New Caledonia appear similar but CG specimens are more conical on the spiral side and more convex on the umbilical side. Furthermore the sutures are depressed instead of flush and the spiral side perforations more abundant. The original collections of C . basilanensis were from the Philippines (McCulloch 1977). Hatta & Ujiié’s (1992a) material came from waters between Ishigaki and Iriomote Islands, southern Ryukyu Island Arc and Parker (2009) and Haig’s (1997) published specimens came from Ningaloo Reef and Exmouth Gulf, Western Australia, respectively. Distribution within study area. Cibicidoides sp. cf. C. basilanensis was found in all sampled reefs of the CG. Abundance was lower on Heron Reef flat and Heron Lagoon (one to five specimens per site) and was highest at Site 43 in One Tree Lagoon 1 with 17 specimens collected. : Published as part of Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, pp. 1-123 in Zootaxa 4215 (1) on page 86, DOI: 10.11646/zootaxa.4215.1.1, http://zenodo.org/record/272923 : {"references": ["McCulloch, I. (1977) Qualitative Observations on Recent Foraminiferal Tests with Emphasis on the Eastern Pacific, Parts I- III. University of Southern California, Los Angeles, 1078 pp.", "Haig, D. W. (1997) Foraminifera from Exmouth Gulf, Western Australia. Journal of the Royal Society of Western Australia, 80, 263 - 280.", "Parker, J. H. (2009) Taxonomy of Foraminifera from Ningaloo Reef, Western Australia. Association of Australasian Palaeontologists, Canberra, 810 pp.", "Parr, W. J. (1950) Foraminifera: British and New Zealand Antarctic Research Expedition, 1929 - 1931. Reports - Ser. B (Zoology & Botany), 5, 233 - 292.", "Hatta, A. & Ujiie, H. (1992 a) Benthic Foraminifera from coral seas between Ishigaki and Iriomote Islands, Southern Ryukyu Island Arc, Northwestern Pacific, Part II: Systematic Descriptions of Rotaliina. Bulletin of the College of Science, University of the Ryukyus, 54, 163 - 287.", "Trauth, F. (1918) Das Eozanvorkommen bei Radstadt im Ponau und seins Beziehungen zu den gleichal-terigen Ablagerungen bei Kirchberg am Weschel und Wimpassing am Leithagebirge. Denkschriften der Kai-serlichen Akademie der Wissenschaften Wien, Mathematische-Naturwissenschaftliche Classe, 95, 171 - 278.", "Debenay, J. P. (2012) A Guide to 1,000 Foraminifera from Southwestern Pacific New Caledonia. IRD Editions, Publications Scientifiques du Museum, Marseille, 378 pp."]}