Catalog entries: Globigerina cerroazulensis, Globorotalia bonairensis, Globorotalia centralis
Type images:Distinguishing features:
Parent taxon (Turborotalia): Trochospiral with umbilical-extraumbilical aperture.
Wall smooth pustulose, can be weakly cancellate, & may defoliate.
This taxon: Like T. pomeroli but more conical in edge view, with flatter spiral side, generally lower trochospiral, & more compressed chambers.
Morphology:
Wall type:
Size:
Character matrix
test outline: | Subcircular | chamber arrangement: | Trochospiral | edge view: | Planoconvex | aperture: | Umbilical-extraumbilical |
sp chamber shape: | Crescentic | coiling axis: | Moderate | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Subtriangular | umbilicus: | Narrow | periph margin shape: | Subangular | accessory apertures: | None |
spiral sutures: | Weakly depressed | umb depth: | Deep | wall texture: | Moderately pustulose | shell porosity: | Finely Perforate: 1-2.5µm |
umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 4-5 | N.B. These characters are used for advanced search. N/A - not applicable |
Geographic distribution
Aze et al. 2011 summary: Cosmopolitan; based on Pearson et al. (2006)
Isotope paleobiology
Aze et al. 2011 ecogroup 2 - Open ocean mixed-layer tropical/subtropical, without symbionts. Based on _13C lighter than species with symbionts; also with relatively light _18O. Sources cited by Aze et al. 2011 (appendix S3): Pearson et al. (2007)
Phylogenetic relations
Most likely ancestor: Turborotalia pomeroli - at confidence level 4 (out of 5). Data source: Pearson et al. (2006), fig 15.1.
Likely descendants: Turborotalia cocoaensis;
plot with descendants
Geological Range:
Notes: Middle Eocene, lower Zone E11 (Toumarkine and Bolli, 1970) to just below the Eocene/Oligocene boundary (within Zone E16) (Coccioni and others, 1988). [Pearson et al. 2006]
Last occurrence (top): in upper part of E16 zone (80% up, 34.1Ma, in Priabonian stage). Data source: Pearson et al. (2006), fig. 15.1
First occurrence (base): in lower part of E11 zone (30% up, 41.4Ma, in Lutetian stage). Data source: Pearson et al. (2006), fig. 15.1
Plot of occurrence data:
Primary source for this page: Pearson et al. 2006 - Eocene Atlas, chap. 15, p. 442
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Turborotalia cerroazulensis compiled by the pforams@mikrotax project team viewed: 6-2-2025
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