pforams@mikrotax - Globigerinoides seigliei

pforams@mikrotax - Globigerinoides seigliei pforams@mikrotax - Globigerinoides seigliei

Globigerinoides seigliei

Classification: pf_cenozoic -> Globigerinidae -> Globigerinoides -> Globigerinoides seigliei
Sister taxa: G. tenellus, G. elongatus, G. conglobatus, G. ruber ⟩⟨ G. rublobatus ⟩⟨ G. obliquus, G. extremus, G. altiaperturus, G. eoconglobatus, G. joli, G. neoparawoodi ⟩⟨ G. kennetti, G. bollii, G. italicus ⟩⟨ G. mitra, G. seigliei, G. subquadratus, G. diminutus ⟩⟨ G. bulloideus, G. sp.

K_S 1983 17-4.JPG
Norris98 pl2-20.JPG

Taxonomy

Citation: Globigerinoides seigliei Bermudez & Bolli 1969

taxonomic rank: species

Basionym: Globigerinoides rubra seigliei

Synonyms:

Globigerinoides tyrrhenicus Borsetti and Cati [according to Berggren 1977; Kennett & Srinivasan 1983]

Catalog entries: Globigerinoides rubra seigliei, Globigerinoides tyrrhenicus

Type images:

holotype: G. rubra seigliei
holotype: G. rubra seigliei

Distinguishing features:
Parent taxon (Globigerinoides): Supplementary apertures, with ruber/sacculifer-type spinose wall texture
This taxon: Like G. ruber but somewhat aberrant primary aperture and large supplementary apertures

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description

Morphology:

Test large subquadrate, medium to high trochospiral, three subspherical to ovate chambers in the final whorl; sutures radial, depressed; surface coarsely perforate; primary aperture interiomarginal, umbilical, a wide-open asymmetrical arch; supplementary apertures large, high arch situated over sutures of earlier chambers. [Kennett & Srinivasan 1983]

Wall type:

Spinose; Cancellate [Aze 2011]

Character matrix
test outline: Lobate chamber arrangement: Trochospiral edge view: Equally biconvex aperture: Umbilical
sp chamber shape: Globular coiling axis: Moderate-high periphery: N/A aperture border: Thin lip
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 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

Warm to cool subtropical. [Kennett & Srinivasan 1983] Low latitudes [Aze et al. 2011, based on Kennett & Srinivasan (1983)]

[SCOR WG138]

Isotope paleobiology

Aze et al. 2011 ecogroup 1 - Open ocean mixed-layer tropical/subtropical, with symbionts. Based on very heavy δ¹³C and relatively light δ¹⁸O. Sources cited by Aze et al. 2011 (appendix S3): Keller (1985)

Phylogenetic relations

The morphology of Gs. siegliei closely resembles Gs. ruber from which it seems to have been derived during the Late Miocene by developing somewhat aberrant primary and supplementary apertures. [Kennett & Srinivasan 1983]

Most likely ancestor: Globigerinoides ruber - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig. 10.

Biostratigraphic distribution

Geological Range:
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:

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: Globigerinoides seigliei, synonyms included - Globigerinoides seigeli; Globigerinoides seigliei; Globigerinoides tyrrhenicus;
See also space-time plot :: Samples map :: Parent: Globigerinoides

Primary source for this page: Kennett & Srinivasan 1983, p.78

References:

Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs

Berggren, W. A. (1977b). Late Neogene foraminiferal biostratigraphy of the Rio Grande Rise (South Atlantic). Marine Micropaleontology. 2(3): 265-313. gs

Bermudez, P. J. & Bolli, H. M. (1969). Consideraciones sobre los sedimentos del mioceno medio al reciente de las costas central y oriental de Venezuela. Tercera Parte. Los foraminiferos planctonicos. Boletin de Geologia. 10(20): 137-223. 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

Norris, R. D. (1998). Planktonic foraminifer biostratigraphy: Eastern Equatorial Atlantic. Proceedings of the Ocean Drilling Program, Scientific Results. 159: 445-479. gs O

Globigerinoides seigliei compiled by the pforams@mikrotax project team viewed: 11-9-2024

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Short stable page link: https://mikrotax.org/pforams/index.php?id=104067 Go to Archive.is to create a permanent copy of this page - citation notes

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test outline:	Lobate	chamber arrangement:	Trochospiral	edge view:	Equally biconvex	aperture:	Umbilical
sp chamber shape:	Globular	coiling axis:	Moderate-high	periphery:	N/A	aperture border:	Thin lip
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	N.B. These characters are used for advanced search. N/A - not applicable