 Hornibrook et al. 1989, Fig. 22.22: 0.37 mm |
Reference: Hornibrook, Brazier & Strong 1989, p.85, Fig. 22:22.
Synonymy: 1940, Trans. Roy. Soc. N.Z. 69(4): 460, pl. 66, fig. 166-171 (Anomalina).
Description: Distinguished by the smooth, strongly inflated trochospiral test with a domed dorsal surface and a distinct umbilicus on the ventral side.
Comparison: Resembles Rotaliatina but lacks true apertural plates.
Distribution: Lillburnian, rare, Waiauan to Recent.
Comment: Probably derived from A. pinguiglabra (Finlay) in the upper Southland Series. Vella separated a flat-topped form from Cook Strait as a southern subspecies frigindex (1957, N.Z. Geol. Surv. paleont. bull. 28: 37, pl. 9, fig. 183, 184).
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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