 Hornibrook et al. 1989, Fig. 23.11a-b (Holotype): 0.55 mm |
Reference: Hornibrook, Brazier & Strong 1989, p.89, Fig. 23:11a-b (Holotype).
Synonymy: 1961, N.Z. Geol. Surv. paleont. bull. 34: 163, pl. 25, fig. 478, 479, 483 (Cibicidoides).
Description: Distinguished by the strongly planoconvex or biconvex tightly coiled test with a coarsely perforate domed uncoiled dorsal side; flatter ventrally with markedly sinuous radial sutures, often with a small umbo; aperture extends only for a very short distance backwards along the periphery.
Comparison: Cibicides temperatus Vella and topotypes of the closely similar C. brevoralis Carter (Janjukian, Oligocene, Southeast Australia) both differ in having a distinctly longer extension of the aperture along the periphery.
Distribution: Bortonian to Waipipian.
Comment: Last appearance is adopted as the most useful benthic foraminiferal datum for the top of Waipipian.
Cite this publication as: "Strong CP, Raine JI, Terezow M. 2018. Key
species of New Zealand fossil foraminifera: descriptions from "Manual of New
Zealand Permian to Pleistocene Foraminiferal Biostratigraphy" by Hornibrook,
Brazier and Strong, 1989. Lower Hutt (NZ): GNS Science. (GNS Science
miscellaneous series; 123)."
ISSN 1172-2886, ISBN 978-1-98-853088-8,
DOI 10.21420/G2M63W.
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