Catalog entries: Globigerinoides kennetti
Type images:Distinguishing features:
Parent taxon (Globigerinoides): Supplementary apertures, with ruber/sacculifer-type spinose wall texture
This taxon: Like Gs. bolli but only 3 to 3½ chambers in final whorl (vs. 4), less-embracing chambers, and more subquadrate outline
Morphology:
Wall type:
Character matrix
test outline: | Ovate | chamber arrangement: | Trochospiral | edge view: | Equally biconvex | aperture: | Umbilical |
sp chamber shape: | Globular | coiling axis: | Low-moderate | periphery: | N/A | aperture border: | N/A |
umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | Sutural |
spiral sutures: | Strongly depressed | umb depth: | Deep | wall texture: | Cancellate | shell porosity: | Macroperforate: >2.5µm |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 3-3.5 | N.B. These characters are used for advanced search. N/A - not applicable |
[SCOR WG138] Close morphological similarities between Gs. kennetti and Gs. bollii suggest that they are closely related. [Kennett & Srinivasan 1983]
Similar species
Geographic distribution
Isotope paleobiology
Phylogenetic relations
Most likely ancestor: Globigerinoides bollii - at confidence level 2 (out of 5). Data source: Kennett & Srinivasan, fig. 9, p.70; Aze et al. 2011.
Geological Range:
Notes: Zone N16 to Zone
N18 (Late Miocene).
Last occurrence (top): within N18 zone (5.20-5.72Ma, top in Zanclean stage). Data source: Kennett & Srinivasan 1983
First occurrence (base): within N16 zone (8.58-9.83Ma, base in Tortonian stage). Data source: Kennett & Srinivasan 1983
Plot of occurrence data:
Primary source for this page: Kennett & Srinivasan 1983, p.72
Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs Keller, G. (1985). Depth stratification of planktonic foraminifers in the Miocene Ocean. In, Kennett, J. P. (ed.) The Miocene Ocean: Paleoceanography and Biogeography. GSA Memoir . 163: 1-337. gs Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gsReferences:
Globigerinoides kennetti compiled by the pforams@mikrotax project team viewed: 11-10-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=104154 Go to Archive.is to create a permanent copy of this page - citation notes |