 Hornibrook et al. 1989, Fig. 29.8: 0.44 mm |
Reference: Hornibrook, Brazier & Strong 1989, p.131, Fig. 29:8.
Synonymy: 1965, Bol. infr. Asoc. Venez. Geol. Miner. Petrol. 8(5): 139, pl. 1, fig. 16- 18;
1978, Jour. Foram. Res. 8(2).: 138, pl. 1, fig. 1-9;
1982, Hornibrook, N.Z. jl. geol. geophys. 25: 93, fig. 6dd;
1983, Globorotalia (Hirsutella) margaritae, Kennett & Srinivasan, Neogene Planktonic Foraminifera, pp. 136, 137, pl. 32, fig. 4-6, text-fig. 15.
Description: Distinguished by the small depressed strongly trochospiral form distinctly convex on the spiral side, gently concave on the umbilical side. Five chambers in the final whorl, strongly recurved on the spiral side,bften with a thin keel. Surfaces densely porous and pustulose on early chambers. Aperture a low, lipped slit.
Distribution: Opoitian to lower Waipipian?.
Comment: Widely used as an index species for Lower Pliocene in tropical and subtropical waters. Rare in 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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