Globigerina


Classification: pf_cenozoic -> spinose -> Globigerinidae -> Globigerina
Sister taxa: Catapsydrax, Eoglobigerina, Globigerina, Globigerinatheka, Globorotaloides, Globoturborotalita, Guembelitrioides, Orbulinoides, Paragloborotalia, Parasubbotina, Pseudoglobigerinella, Subbotina, Turborotalita,
Daughter taxa (blue => in age window 0-300Ma)
This small species is characterized by its globular, slightly embracing, chambers with a moderately high-arched aperture bordered by a thickened imperforate rim, and its bulloides-type wall texture. It is distinguished from Globigerina praebulloides by its less gaping aperture and slower rate of chamber enlargement.

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:

Short diagnosis: 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.

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.

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]

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): within No known fossil record modern (0.00-0.00Ma, base in stage). Data source: Total of range of species in this database

Plot of occurrence data:

Primary source for this page: Olsson et al. 2006 - Atlas of Eocene Planktonic Foraminifera, chapter 6, p. 114

References:

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.

Olsson, R.K.; Pearson, P.N. & Huber, B.T., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Catapsydrax, Globorotaloides, Guembelitrioides, Paragloborotalia, Parasubbotina, and Pseudoglobigerinella n. gen. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera, Cushman Foundation Special Publication 41. Cushman Foundation Special Publication. Allen Press, Lawrence, Kansas, pp. 67-110.

Orbigny 1826 [sorry, not in our bibliography yet]


Globigerina compiled by the pforams@mikrotax project team viewed: 30-5-2017

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AphiaID: 112197 Nomenclatural data on WoRMS

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