Globoquadrinidae


Classification: pf_cenozoic -> muricate non-spinose -> Globoquadrinidae
Sister taxa: Globoquadrinidae, Truncorotaloididae,
Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa
The genus is characterized by a trochospirally coiled test, normal perforate, cancellate, nonspinose Globoquadrina-type wall texture, with an umbilical aperture bordered by an asymmetrically triangular lip (umbilical tooth). The number of chambers in the final whorl varies from 3½-6. The chambers are subglobular and slightly compressed and are in varying degrees bent into the umbilical depression along with the apertural lip.

Taxonomy

Citation: Globoquadrinidae Blow 1979
Rank: Family

Catalog entries: Globoquadrinidae [not in catalog yet]

Type images:

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

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): in lower part of Langhian Stage (40% up, 15.1Ma, in Langhian stage). Data source: Total of range of species in this database
First occurrence (base): in lower part of Bartonian Stage (35% up, 40Ma, in Bartonian 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 13, p. 401

References:

Blow, W.H., (1979). The Cainozoic Globigerinida: A study of the morphology, taxonomy, evolutionary relationships and stratigraphical distribution of some Globigerinida (mainly Globigerinacea). E. J. Brill, Leiden, 1413 pp.

Olsson, R.K.; Hemleben, C. & Pearson, P.N., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Dentoglobigerina. 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. 401-412.


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Globoquadrinidae compiled by the pforams@mikrotax project team viewed: 13-12-2017

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