Catalog entries: Globorotalia menardii miocenica
Type images:Distinguishing features:
Parent taxon (menardii lineage): G. archeomenardii - menardii, limbata - miocenica & exilis - pertenius lineages
This taxon: Distinguished from other species of the menardii lineage by its distinctly planoconvex test and circular outline.
Aperture: Interiomarginal umbilical-extraumbilical low-arched slit with thin lip [Aze 2011, based on Kennett & Srinivasan 1983]
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: | 6-7 | N.B. These characters are used for advanced search. N/A - not applicable | |||
[SCOR WG138]
Most likely ancestor:
Globorotalia pseudomiocenica - at confidence level 4 (out of 5). Data source: Stewart 2003 fig. 6.10; Aze et al. 2011, appendix 5 (but differs from Kennett & Srinivasan 1983, fig. 14).
Geological Range:
Last occurrence (top): at top of PL5 [Atl.] zone (100% up, 2.4Ma, in Gelasian stage). Data source: Wade et al. (2011), zonal marker
First occurrence (base): near base of PL3 [Atl.] zone (12% up, 3.8Ma, in Zanclean stage). Data source: Wade et al. (2011), additional event; position within zone determined by linear interpolation from data in table 1 of Wade et al. (2011).
Plot of occurrence data:
Primary source for this page: Kennett & Srinivasan 1983, p.128
Aze, T., et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs Chaisson, W. P. & Pearson, P. N. (1997). Planktonic foraminifer biostratigraphy at Site 925: Middle Miocene–Pleistocene. Proceedings of the Ocean Drilling Program, Scientific Results. 154: 3-31. gs Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs Norris, R. D. (1998). Planktonic foraminifer biostratigraphy: Eastern Equatorial Atlantic. Proceedings of the Ocean Drilling Program, Scientific Results. 159: 445-479. gs O Palmer, D. K. (1945). Notes on the Foraminifera from Bowden, Jamaica. Bulletins of American Paleontology. 29(115): 1-82. gs Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs Stainforth, R. M., Lamb, J. L., Luterbacher, H., Beard, J. H. & Jeffords, R. M. (1975). Cenozoic planktonic foraminiferal zonation and characteristics of index forms. University of Kansas Paleontological Contributions, Articles. 62: 1-425. gs OReferences:

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Globorotalia miocenica compiled by the pforams@mikrotax project team viewed: 22-1-2026
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