Catalog entries: Globigerina umbilicata
Type images:Distinguishing features:
Parent taxon (Globigerina): Low trochospirally enrolled, globose test; 3-5, globular chambers in final whorl. Aperture interiomarginal, umbilical, a high arch bordered by a thin rim-like lip or thick imperforate lip. Wall spinose; spines supported by spine collars which coalesce to form ridges.
This taxon: 5-6 chambers in final whorl; often with kummerform final chamber. Umbilicus very large, deep. Aperture large, umbilical, with thin lip.
Aperture: Umbilical large opening with a thin lip [Aze 2011, based on Kennett & Srinivasan 1983]
Diagnostic characters:
Morphology:
Wall type:
Character matrix
| test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Equally biconvex | aperture: | Umbilical |
| sp chamber shape: | Globular | coiling axis: | Low-moderate | periphery: | N/A | aperture border: | Thin lip |
| umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | None |
| spiral sutures: | Moderately depressed | umb depth: | Deep | wall texture: | Cancellate | shell porosity: | Macroperforate: >2.5µm |
| umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 5-6 | N.B. These characters are used for advanced search. N/A - not applicable | |||
[SCOR WG138]
Geographic distribution
Isotope paleobiology
Most likely ancestor: Globigerina bulloides - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 8.
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 & Srinivasan 1983, p.38
Aze, T., et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs Lam, A. & Leckie, R. M. (2020a). Late Neogene and Quaternary diversity and taxonomy of subtropical to temperate planktic foraminifera across the Kuroshio Current Extension, northwest Pacific Ocean. Micropaleontology. 66(3): 177-268. gs Orr, W. N. & Zaitzeff, J. B. (1971). A new planktonic foraminiferal species from the California Pliocene. Journal of Foraminiferal Research. 1(1): 17-19. gsReferences:

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Globigerina umbilicata compiled by the pforams@mikrotax project team viewed: 16-11-2025
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