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Guembelitria


Classification: pf_mesozoic -> Guembelitriidae -> Guembelitria
Sister taxa: Guembelitria,
Daughter taxa (blue => in age window 0-300Ma)



Specimens which cannot be assigned to established species

Taxonomy

Citation: Guembelitria Cushman 1933
Rank: Genus
Basionym: Guembelitria cretacea
Type species: Guembelitria cretacea Cushman, 1933

Type images:

Original description: Guembelitria:

Entries in the Catalog of original descriptions: Guembelitria;

Short diagnosis: Test subconical, chambers globular and inflated, triserial throughout, sutures distinct, depressed; wall calcareous, optically radial, finely and irregularly perforate, with each pore elevated on a pore mound; aperture an interiomarginal arch at the base of the final chamber, with an imperforate bordering lip.


Diagnostic characters: Test subconical, chambers globular and inflated, triserial throughout, sutures distinct, depressed; wall calcareous, optically radial, finely and irregularly perforate, with each pore elevated on a pore mound; aperture an interiomarginal arch at the base of the final chamber, with an imperforate bordering lip.

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Aptian Stage (112.95-126.30Ma, base in Aptian stage). Data source: Total of range of species in this database

Plot of occurrence data:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

References:

Cushman, J.A., (1933). Post-Cretaceous occurrence of Guembelina with a description of a new species. Contributions from the Cushman Laboratory for Foraminiferal Research, 9(3): 64-69.

Cushman, J.A., (1933). Some new foraminiferal genera. Contributions from the Cushman Laboratory for Foraminiferal Research, 9(2): 32-38.

Loeblich, A.R., Jr. & Tappan, H., (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York, 1059 pp.


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Guembelitria compiled by the pforams@mikrotax project team viewed: 22-10-2017

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