 Hornibrook et al. 1989, Fig. 23.24a-b: 1.3 mm |
Reference: Hornibrook, Brazier & Strong 1989, p.91, Fig. 23:24a-b.
Synonymy: 1862, Discorbina dimidiata, in Carpenter, Introduction to the Study of Foraminifera. London, Ray. Soc., p. 201; fig. 32b;
1957, Discorbis dimidiatus, Vella, N.Z. Geol. Surv. paleont. bull. 28: 35, pl. 8, fig. 166, 172-174;
1967, Hedley, Hurdle & Burdett, N.Z. Dept. Sci. Industr. Res. bull. 180: 33-36, pl. 1, fig. 4, pl. 10, fig. 1-3, text-fig. 28-43 (Lamellodiscorbis).
Description: Large, strongly convex, evolute and smooth dorsally; early chambers compressed and often covered by clear secondary deposits, later chambers coarsely perforate; ventral side attaching, variable, usually flattish with prominent apertural plates, overlapping and tending to fuse together, with sutural prolongations; deep sutural clefts communicate with the umbilicus.
Distribution: A few records from the Wanganui Series. Seldom found fossil. Taranaki Series? Wanganui Series to Recent. Abundant on rocky coasts attached to algae in New Zealand and southern and Southeast Australia.
Comment: Variable in shape and degree of inflation.
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.
This publication is © copyright in 2018 by GNS Science and is licenced for re-use under a Creative Commons Attribution 4.0 International Licence. Please note that this licence does not apply to any included logos, emblems or trade marks.