Catalog entries: Globorotalia ehrenbergi, Globorotalia haunsbergensis
Type images:Distinguishing features:
Parent taxon (Globanomalina): Very low trochospiral; 5-6 chambers in final whorl; chamber-shape variable.
Aperture interiomarginal, umbilical-extraumbilical, arch with narrow lip.
Wall smooth, normally perforate, pustules in some species.
This taxon: Test compressed, smooth-walled, chambers moderately increasing in size. Periphery pinched with a thickened imperforate margin (faint keel). 5-5½ chambers in final whorl.
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Compressed | aperture: | Umbilical-extraumbilical |
sp chamber shape: | Petaloid | coiling axis: | Low | periphery: | Single keel | aperture border: | Thin lip |
umb chbr shape: | Petaloid | umbilicus: | Narrow | periph margin shape: | Subangular | accessory apertures: | None |
spiral sutures: | Strongly depressed | umb depth: | Shallow | wall texture: | Smooth | shell porosity: | Finely Perforate: 1-2.5µm |
umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 5-5.5 | N.B. These characters are used for advanced search. N/A - not applicable |
Geographic distribution
Aze et al. 2011 summary: Cosmopolitan in low to middle latitudes; based on Olsson et al. (1999)
Isotope paleobiology
Aze et al. 2011 ecogroup 3 - Open ocean thermocline.
Phylogenetic relations
Blow (1979), this species is transitional to G. pseudomenardii. It evolved from G. compressa by developing a more highly developed imperforate margin and a more sharply angular axial margin. [Olsson et al. 1999]
Most likely ancestor: Globanomalina compressa - at confidence level 4 (out of 5). Data source: Olsson et al. 1999, fig 5a.
Likely descendants: Globanomalina chapmani; Globanomalina pseudomenardii;
plot with descendants
Geological Range:
Notes: Zone P2 to Zone P4. [Olsson et al. 1999]
Last occurrence (top): at top of P3 zone (100% up, 60.7Ma, in Selandian stage). Data source: Olsson et al. 1999, fig 5a
First occurrence (base): in mid part of P2 zone (50% up, 62.4Ma, in Danian stage). Data source: Olsson et al. 1999, fig 5a
Plot of occurrence data:
Primary source for this page: Olsson et al. 1999 - Atlas of Paleocene Planktonic Foraminifera, p. 42
Blow, W. H. (1979). The Cainozoic Globigerinida: A study of the morphology, taxonomy, evolutionary relationships and stratigraphical distribution of some Globigerinida (mainly Globigerinacea). E. J. Brill, Leiden. 2: 1-1413. gs Bolli, H. M. (1957d). The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 61-82. gs Cushman, J. A. & Bermudez, P. J. (1949). Some Cuban species of Globorotalia. Contributions from the Cushman Laboratory for Foraminiferal Research. 25: 26-45. gs O Gohrbandt, K. (1963). Zur Gliederung des Palaeogen im Helvetikum nordlich Salzburg nach planktonischen Foraminiferen. Mitteilungen der Geologischen Gesellschaft in Wien. 56(1): 63-. gs Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. (85): 1-252. gs Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gsReferences:
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Globanomalina ehrenbergi compiled by the pforams@mikrotax project team viewed: 7-2-2025
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