 Hornibrook et al. 1989, Fig. 28.10a-c: 0.52 mm |
Reference: Hornibrook, Brazier & Strong 1989, p.129, Fig. 28:10a-c.
Synonymy: 1960, Micropaleontology 6(4): 358, pl. 4, fig. 3a-c;
1971, G. (Turborotalia) conica, Jenkins, N.Z. Geol. Surv. paleont. bull. 42: 113, pl. 11, fig. 270-272.
Description: Distinguished by the globose variably conical shape, with four to five strongly embracing slowly increasing chambers in the last whorl; sutures on spiral side recurved, radial on ventral side; almost no umbilicus, coarsely perforate; aperture a low arch.
Distribution: Lillburnian to Waiauan.
Comment: Similar populations are found in the Lillburnian and Waiauan of the Greymouth basin and the Great South Basin on the Campbell Plateau and G. conica is most common in the Middle Miocene of the southern Southwest Pacific area. The specimen figured here (redrawn) is the one figured by Jenkins, 1971, from populations in which adults are heavily encrusted and more globose than the types figured by him (1960). G.H. Scott (pers comm) informs the writer that he proposes to separate the form figured here as a new species, Globorotalia amuria. The more typical conical form of G. conica is also common in the Middle Miocene of New Zealand.
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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