Globorotalia gigantea

Classification: pf_neogene -> Globorotalidae -> Globorotalia -> hirsuta lineage -> Globorotalia gigantea
Sister taxa: G. evoluta, G. gigantea, G. praemargaritae, G. primitiva, G. hirsuta, G. theyeri, G. margaritae, G. juanai, G. cibaoensis, G. scitula, G. challengeri, G. praescitula,


Citation: Globorotalia gigantea Blow, 1969
Rank: species
Basionym: Globorotalia scitula gigantea

Catalog entries: Globorotalia scitula gigantea;

Type images:

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.


Diagnostic characters: Large, medium to low trochospiral, equatorial periphery slightly lobulate with keel-like rim

Aperture: : Interiomarginal umbilical-extraumbilical low slit bordered by a pronounced lip [Aze 2011, based on D. R. M. Stewart unpublished data]

Wall type: Non-spinose; Smooth [Aze 2011]

Biogeography and Palaeobiology

Isotope paleobiology: Aze et al. 2011 ecogroup 4 - Open ocean sub-thermocline. Based on very light ∂13C and very heavy ∂18O. Sources cited by Aze et al. 2011 (appendix S3): this study

Most likely ancestor: Globorotalia scitula - at confidence level 3 (out of 5). Data source: Aze et al. 2011, appendix 5.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within PT1a subzone (0.61-1.88Ma, top in Ionian stage). Data source: Aze et al. 2011
First occurrence (base): within PT1a subzone (0.61-1.88Ma, base in Gelasian stage). Data source: Aze et al. 2011

Plot of occurrence data:


Aze, T.; Ezard, T.H.G.; Purvis, A.; Coxall, H.K.; Stewart, D.R.M.; Wade, B.S. & Pearson, P.N.P., (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews, 86: 900-927.

Blow, W.H., (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In: Bronnimann, P. and Renz, H.H. (Editors), Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967, Leiden, Netherlands, pp. 380-381.


Globorotalia gigantea compiled by the pforams@mikrotax project team viewed: 20-1-2018

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