Catalog entries: Globigerina druryi
Type images:Distinguishing features:
Parent taxon (Globoturborotalita): Trochospiral test with a single, large, open umbilical aperture. Cancellate wall. 4-4½ chambers in final whorl
This taxon: Small, compact test, with coarse-pitted surface, and small, rimmed, aperture
Morphology:
Wall type:
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Equally biconvex | aperture: | Umbilical |
sp chamber shape: | Globular | coiling axis: | Moderate | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | None |
spiral sutures: | Weakly depressed | umb depth: | Deep | wall texture: | Cancellate | shell porosity: | Macroperforate: >2.5µm |
umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 4-0 | N.B. These characters are used for advanced search. N/A - not applicable |
[SCOR WG138] The small, compact test, coarse- pitted surface, and small rimmed aperture serve to distinguish this species from others of the subgenus Zeaglobigerina. Gg. (Zg.) druryi evolved from Gg. (Zg.) woodi during the Early Miocene Zone N7 and developed into Gg. (Zg.) nepenthes by further elongation of the final chamber. [Kennett & Srinivasan 1983]
Geographic distribution
Isotope paleobiology
Phylogenetic relations
Most likely ancestor: Globoturborotalita woodi - at confidence level 2 (out of 5). Data source: Kennett & Srinivasan (1983), however, Aze et al. suggest origin from Globigerina eamesi .
Likely descendants: Globoturborotalita nepenthes;
plot with descendants
Geological Range:
Last occurrence (top): within N15 zone (9.83-10.46Ma, top in Tortonian stage). Data source: Kennett & Srinivasan 1983
First occurrence (base): within N7 zone (16.38-17.54Ma, base in Burdigalian stage). Data source: Kennett & Srinivasan 1983
Plot of occurrence data:
Primary source for this page: Kennett & Srinivasan 1983, p.46
Akers, W. H. (1955). Some planktonic foraminifera of the American Gulf Coast and suggested correlations with the Caribbean Tertiary. Journal of Paleontology. 29(4): 647-664. gs Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. 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 Spezzaferri, S. et al. (2015). Fossil and genetic evidence for the polyphyletic nature of the planktonic foraminifera "Globigerinoides", and description of the new genus Trilobatus. PLoS One. 1-20. gs References:
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Globoturborotalita druryi compiled by the pforams@mikrotax project team viewed: 8-12-2023
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