Catalog - Globoquadrina obesa Catalog - Globoquadrina obesa

CATALOG OF ORIGINAL DESCRIPTIONS: Globoquadrina obesa Akers 1955

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> G -> Globoquadrina -> Globoquadrina obesa
Other pages this level: G. altispira conica, G. altispira globosa, G. asanoi, G. dehiscens praedehiscens, G. globularis, G. himiensis, G. kagaensis, G. langhiana, G. larmeui, G. obesa, G. pachyderma pacifica, G. palmerae, G. patriciae, G. pozonensis, G. primitiva, G. pseudofoliata, G. quadraria advena, G. sellii, G. subdehiscens, G. tripartita laxispira, G. tripartita tricamerata

Globoquadrina obesa

Citation: Globoquadrina obesa Akers 1955
Rank: species
Type specimens: Holotype No. 104
Type sample (& lithostrat): (core 10,461-10,464 feet) Louisiana, of Shell Godchaux Sugars No. 1
Type age (chronostrat): Miocene Miogypsina zone
Type locality: Section 97, Township 11 South, Range 7 East, St. John the Baptist Parish, Louisiana.
Type repository: New Orleans; California Company Collection, New Orleans, Louisiana.

Linked specimens: USNM-4759 USNM-4758

Current identification/main database link: Dentoglobigerina sellii (Borsetti, 1959)


Original Description

Test stout, unequally biconvex; dorsal side moderately convex, ventral side very strongly so; umbilicate; two whorls usually visible; last whorl composed of four chambers which are inflated and increase rapidly in size as added; ventral portion of last chamber flattened, often slightly concave; wall coarsely perforate; aperture a narrow opening at the base of the last chamber covered by a single small labrum.

Size:
Height of holotype, 0.35 mm.; width, 0.30 mm.; thickness, 0.29 mm.

Extra details from original publication
This species is similar to Globoquadrina quadraria (Cushman and Ellisor) var. advena Bermudez from which it differs in being less convex dorsally, in having a more inflated final chamber, in having a shorter aperture, and in the consistently smaller size of the test.

References:

Akers, W. H. (1955). Some planktonic foraminifera of the American Gulf Coast and suggested correlations with the Caribbean Tertiary. Journal of Paleontology. 29(4): 647-664. gs

Wade, B. S., Pearson, P. N., Olsson, R. K., Fraass, A. J., Leckie, R. M. & Hemleben, C. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene and Lower Miocene Dentoglobigerina and Globoquadrina. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 11): 331-384. gs

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Globoquadrina obesa compiled by the pforams@mikrotax project team viewed: 1-6-2023

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