arrayname: original
Catalog entries: Globorotalia fohsi robusta
Type images:Distinguishing features:
Parent taxon (Fohsella): G. peripheroronda - lenguaensis - fohsi - robusta lineage
This taxon: Like F. lobata but nearly circular outline and more convex umbilical side.
Aperture: Interiomarginal umbilical-extraumbilical slit with an indistinct lip [Aze 2011, based on Kennett & Srinivasan 1983]
Diagnostic characters:
Morphology:
Wall type:
Character matrix
test outline: | Circular | chamber arrangement: | Trochospiral | edge view: | Inequally biconvex | aperture: | Umbilical-extraumbilical |
sp chamber shape: | Crescentic | coiling axis: | Low | periphery: | Single keel | aperture border: | Thin lip |
umb chbr shape: | Subtriangular | umbilicus: | Narrow | periph margin shape: | Subangular | accessory apertures: | None |
spiral sutures: | Raised | umb depth: | Shallow | wall texture: | Smooth | shell porosity: | Macroperforate: >2.5µm |
umbilical or test sutures: | Weakly depressed | final-whorl chambers: | 6-8 | N.B. These characters are used for advanced search. N/A - not applicable |
[SCOR WG138]
Geographic distribution
Isotope paleobiology
Phylogenetic relations
Most likely ancestor: Fohsella lobata - at confidence level 4 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 12.
Geological Range:
Last occurrence (top): within M9b subzone (11.79-13.13Ma, top in Serravallian stage). Data source: Kennett & Srinivasan 1983
First occurrence (base): at base of M9b subzone (0% up, 13.1Ma, in Serravallian stage). Data source: Wade et al. (2011), zonal marker
Plot of occurrence data:
Primary source for this page: Kennett & Srinivasan 1983, p.102
Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs Blow, W. H. & Banner, F. T. (1966). The morphology, taxonomy and biostratigraphy of Globorotalia barisanensis LeRoy, Globorotalia fohsi Cushman and Ellisor, and related taxa. Micropaleontology. 12(3): 286-302. gs Bolli, H. M. (1950a). The direction of coiling in the evolution of some Globorotaliidae. Contributions from the Cushman Foundation for Foraminiferal Research. 1(3&4): 82-89. gs Hodell, D. A. & Vayavananda, A. (1993). Middle Miocene paleoceanography of the western equatorial Pacific (DSDP Site 289) and the evolution of Globorotalia (Fohsella). Marine Micropaleontology. 22: 279-310. 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. gs Wade, B. S., Pearson, P. N., Berggren, W. A. & Pälike, H. (2011). Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale. Earth-Science Reviews. 104: 111-142. gsReferences:
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Fohsella robusta compiled by the pforams@mikrotax project team viewed: 24-3-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=104129 Go to Archive.is to create a permanent copy of this page - citation notes |
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