Globorotalia cibaoensis

Taxonomy

Catalog entries: Globorotalia cibaoensis

Distinguishing features:
Parent taxon (hirsuta lineage): G. scitula - juanai - margaritae - hirsuta lineage
This taxon: Distinguished by its biconvex test with a rounded periphery (sometimes angular or narrowly keeled in the final chamber.)

Description

Diagnostic characters:

Biogeography and Palaeobiology

Geographic distribution

Most likely ancestor: Globorotalia scitula - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig 15; Stewart 2003 fig. 6.10; Aze et al. 2011, appendix 5.
Likely descendants: Globorotalia crassula; plot with descendants

Biostratigraphic distribution

Geological Range:
Notes: The first appearance of Gr. (H.) cibaoensis provides a valuable biostratigraphic datum for correlation of Late Miocene-Pacific DSDP sequences close to the ∂C13 shift at 6.2 Ma.
Last occurrence (top): in upper part of PL1 [Atl.] zone (81% up, 4.6Ma, 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).
First occurrence (base): in lower part of M13a subzone (35% up, 9.4Ma, in Tortonian 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:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Globorotalia cibaoensis, synonyms included - Globorotalia cibaoensis; Globorotalia miozea cibaoensis; Globorotalia (Hirsutella) cibaoensis; Hirsutella cibaoensis;
• See also space-time plot :: Samples map :: Parent: hirsuta lineage

Primary source for this page: Kennett & Srinivasan 1983, p.136

Globorotalia cibaoensis compiled by the pforams@mikrotax project team viewed: 16-11-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=104095 Go to Archive.is to create a permanent copy of this page - citation notes

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