Globigerinoides altiaperturus

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globigerinidae -> Globigerinoides -> Globigerinoides altiaperturus
Sister taxa: G. altiaperturus, G. conglobatus, G. diminutus, G. elongatus, G. extremus, G. mitra, G. obliquus, G. parawoodi, G. ruber, G. seigliei, G. subquadratus, G. tenellus, G. white, G. sp.,

Taxonomy

Citation: Globigerinoides altiaperturus Bolli, 1957
Rank: species
Basionym: Globigerinoides triloba altiapertura

Catalog entries: Globigerinoides triloba altiapertura;

Type images:

Description


Test morphology: Test low trochospiral, chambers spherical, increasing rapidly in size as added, three in the umbilical aspect and three and a half in spiral aspect; sutures on both sides depressed and slightly curved; surface with large pores and small spine bases on the pore ridges, hispid on the final chamber. Primary aperture interiomarginal, umbilical, a high, distinct arch bordered by a rim. One supplementary sutural aperture opposite the primary aperture on the last few chambers. [Kennett & Srinivasan 1983]

Biogeography and Palaeobiology


Geographic distribution: Tropical to cool subtropical. [Kennett & Srinivasan 1983]

Phylogenetic relations: Gs. altiaperturus is distinguished by its large, arched primary aperture and almost equal-sized supplementary aperture opposite the primary one. This species gave rise to Gs. obliquus. [Kennett & Srinivasan 1983]

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within N7 zone (16.38-17.54Ma, top in Burdigalian stage). Data source: Kennett & Srinivasan 1983
First occurrence (base): in upper part of M2 zone (61% up, 20Ma, in Aquitanian stage). Data source: Wade et al. (2011), additional event; position within zone determined by linear interpolation from data in table 1 of Wade et al. (2011).

Plot of occurrence data:

Primary source for this page: Kennett & Srinivisan 1983, p.54

References:

Bolli, H.M., (1957). Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I. In: Loeblich, A.R., Jr. et al. (Editors), Studies in Foraminifera: U.S. National Museum Bulletin 215. U.S. Government Printing Office, Washington, DC, pp. 97-123.

Kennett, J.P. & Srinivasan, M.S., (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania, 1-265 pp.

Wade, B.S.; Pearson, P.N.; Berggren, W.A. & Pälike, H., (2011). Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale. Earth-Science Reviews, 104: 111-142.


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Globigerinoides altiaperturus compiled by the pforams@mikrotax project team viewed: 23-7-2017

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