Globigerina


Classification: pf_cenozoic -> Globigerinidae -> Globigerina
Sister taxa: Beella, Globigerina, Globigerinella, Protentella, Quiltyella, Ciperoella, Globigerinoides, Globigerinoidesella, Globoturborotalita, Orbulina, Praeorbulina, Sphaeroidinella, Sphaeroidinellopsis, Trilobatus, Turborotalita, Dentoglobigerina, Globoquadrina, Catapsydrax, Clavatorella, Paragloborotalia, Protentelloides, Eoglobigerina, Globigerinatheka, Globorotaloides, Guembelitrioides, Orbulinoides, Parasubbotina, Pseudoglobigerinella, Subbotina,
Daughter taxa: (blue => in age window 0-300Ma)
Extant and eogene species
Usually 4 chambers in final whorl; Aperture a high symmetrical arch.
4 chambers in final whorl; Umbilicus small but deep; Aperture an elongate narrow arch with prominent lip
5-6 chambers in final whorl; often with kummerform final chamber. Umbilicus very large, deep. Aperture large, umbilical, with thin lip.
Paleogene species
Like G. officinalis but with lobed peripheral outline, and fully developed bulloides-type wall
Small, chambers globular, slightly embracing; aperture moderately high-arched with a thickened rim; bulloides-type wall texture.
Specimens which cannot be assigned to established species

Taxonomy

Citation: Globigerina d’Orbigny, 1826
Rank: Genus
Type species: Globigerina bulloides d’Orbigny, 1826
Taxonomic discussion: The genus Globigerina is represented by several taxa in the Oligocene-Recent. It first appears in the middle Eocene where it is relatively uncommon. It undergoes a radiation in the Oligocene.
[Olsson et al. 2006]

Catalog entries: Globigerina;

Type images:

Distinguishing features: Low trochospirally enrolled, globose test; 3-5, globular chambers in final whorl. Aperture interiomarginal, umbilical, a high arch bordered by a thin rim-like lip or thick imperforate lip. Wall spinose; spines supported by spine collars which coalesce to form ridges.

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


Diagnostic characters: Low trochospirally enrolled, globose test, with 3-5 rapidly inflating, globular chambers in ultimate whorl. Aperture interiomarginal, umbilical, a high arch bordered by a thin rim-like lip or thick imperforate lip. Umbilicus varies from small and restricted to large and open. Wall spinose; spines are supported by spine collars which coalesce to form ridges.
[Olsson et al. 2006]

Biogeography and Palaeobiology


Phylogenetic relations: The origin of Globigerina is uncertain. In wall texture it appears closest to Subbotina roesnaesensis n. sp., which has a ruber-type cancellate wall texture with spine collars (first observed in its ancestral species Subbotina triangularis in Zone P4).
[Olsson et al. 2006]

Most likely ancestor: Subbotina - at confidence level 0 (out of 5). Data source: .

Biostratigraphic distribution

Geological Range:
Notes: Middle Eocene (E10) to Recent.
[Olsson et al. 2006]
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): in upper part of Lutetian Stage (69% up, 43.2Ma, in Lutetian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Primary source for this page: Olsson et al. 2006 - Eocene Atlas, chap. 6, p. 114

References:

d'Orbigny, A., (1826). Tableau methodique de la Classe de Cephalopodes. Annals des Sciences Naturelles, Paris, 7: 245-314.

Hemleben, C.; Spindler, M. & Anderson, O., (1989). Modern Planktonic Foraminifera. Springer-Verlag, New York.

Olsson, R.K.; Hemleben, C.; Huber, B.T. & Berggren, W.A., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera. Cushman Foundation Special Publication. 41 Allen Press, Lawrence, Kansas, pp. 111-168.


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Globigerina compiled by the pforams@mikrotax project team viewed: 12-11-2018

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Short stable page link: http://mikrotax.org/pforams/index.php?id=100107Go to Archive.is to create a permanent copy of this page - citation notes



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