 Hornibrook et al. 1989, Fig. 25.1a-e (Holotype): 0.65 mm |
Reference: Hornibrook, Brazier & Strong 1989, p.135, Fig. 25:1a-e (Holotype).
Synonymy: 1939, Globigerina linaperta var. turgida, Trans. Roy. Soc. N. Z. 69(1): 125;
1964, Globorotaloides turgidus, Jenkins, Contrib. Cushman Fdn, 15(3): 117, pl. 7, figs. 1a-10b; pl. 8, figs. 1c-13c.
Description: The juvenile stage is like Globorotalia with an interio-marginal primary aperture, followed by the Globigerina-like stage with an umbilical aperture. A bulla often covers the umbilical area hiding the primary aperture and opening towards the penultimate chamber.
Distribution: Teurian to Kaiatan?.
Comment: Jenkins demonstrated dimorphism between the microspheric and megalospheric forms. In the former the bulla tends to be more inflated without a lip. Large, typical populations (0.65 mm) with well developed bullae, appear in the Porangan. Fig. 25:1a-e shows two juvenile microspheric specimens and the holotype which is megalospheric.
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.