Globigerina umbilicata

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globigerinidae -> Globigerina -> Globigerina umbilicata
Sister taxa: G. bulloides, G. bulloideus, G. falconensis, G. umbilicata, G. sp.,

Taxonomy

Citation: Globigerina umbilicata Orr & Zaitzeff 1971
Rank: species
Basionym: Globigerina umbilicata

Catalog entries: Globigerina umbilicata;

Type images:

Description


Diagnostic characters: Low trochospiral, chambers spherical to subspherical

Aperture: : Umbilical large opening with a thin lip [Aze 2011, based on Kennett & Srinivasan 1983]


Wall type: Spinose; Hispid [Aze 2011]

Test morphology: Test medium to large, low trochospiral; chambers spherical to subspherical, increasing slowly in size as added, five to six in the final whorl; sutures distinctly depressed, often with a reduced final chamber (kummerform). Surface similar to G.  bulloides. Umbilicus very large, deep. Aperture large, umbilical, with a thin lip. [Kennett & Srinivasan 1983]

Biogeography and Palaeobiology


Geographic distribution: Dominantly a temperate species. [Kennett & Srinivasan 1983]

Isotope paleobiology: Aze et al. 2011 ecogroup 1 - Open ocean mixed-layer tropical/subtropical, with symbionts. Based on very heavy ∂13C and relatively light ∂18O. Sources cited by Aze et al. 2011 (appendix S3): this study

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within N22 zone (0.00-1.93Ma, top in "Holocene" stage). Data source: Kennett & Srinivasan 1983 - LAD not well established but not an extant species.
First occurrence (base): within N21 zone (1.93-3.10Ma, base in Piacenzian stage). Data source: Kennett & Srinivasan 1983

Plot of occurrence data:

Primary source for this page: Kennett & Srinivisan 1983, p.38

References:

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.

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

Orr, W.N. & Zaitzeff, J.B., (1971). A new planktonic foraminiferal species from the California Pliocene. Journal of Foraminiferal Research, 1(1): 17-19.


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Globigerina umbilicata compiled by the pforams@mikrotax project team viewed: 23-7-2017

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Go to Archive.is to create a permanent copy of this page - citation notes



AphiaID: 923885 Nomenclatural data on WoRMS
Go to Archive.is to create a permanent copy of this page - citation notes

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