Globigerina angiporoides Hornibrook 1965 from: Quilty, P.G.. (1976): Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34 . |
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Species Globigerina angiporoides Hornibrook 1965 |
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Discussion / Comments: |
Jenkins (1985):
G. angiporoides differs from G. linaperta in having spherical chambers, with the final one resembling a bulla with a very low arched aperture. G. minima Jenkins, which is regarded as the ancestral form of G. angiporoides, is smaller in size and has a smoother wall surface.
G. angiporoides ranges in New Zealand from the Late Eocene to Early Oligocene and is common; its ancestor G. minima Jenkins which is smaller and has a smoother wall, ranges from Middle to Late Eocene. G. angiporoides was recorded at DSDP Leg 29 Sites 277, 278, 281 and 282 (Jenkins,
1975) and by Tournarkine (1978) from Leg 40 Site 360, all from the Late Eocene to Early Oligocene, but only in the Early Oligocene at Site 362A of Leg 40. In South Australia, G. angiporoides appears to have a similar stratigraphic range (Lindsay, 1969).
Van Eijden & Smit (1991):
Remarks. Typical specimens are rare and many are intermediate with G. linaperta Finlay, 1939a. The species is most common at Sites 756 and 757. |
Systematics: |
32 Familia Globigerinidae
Genus Globigerina
Species Globigerina angiporoides
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Synonym list: |
Jenkins (1985):
Van Eijden & Smit (1991):
Quilty (1976):
1965 Globigerina angiporoides Hornibrook. - Hornibrook : p.145 figs. 3a-d (= G. angipora Stache, 1865, p. 287, pi. 24, fig. 36)
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Was used in synonym list of: |
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References: |
Hornibrook,N.B. (1965): Globigerina angiporoides n. sp. from the Upper Eocene and Lower Oligocene of New Zealand and the status of Globigerina angipora Stache 1865 . N.Z. J. Geol. Geophys. Vol. 8 p. 834-83
Quilty,P.G.. (1976): Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34
Jenkins,D.G. (1985): Southern mid-latitude Paleocene to Holocene planktic foraminifera. In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 263-282
Van Eijden,A.J.M. and Smit,J. (1991): Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
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