Catalog - Globoquadrina larmeui Catalog - Globoquadrina larmeui

CATALOG OF ORIGINAL DESCRIPTIONS: Globoquadrina larmeui 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 larmeui
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 larmeui

Citation: Globoquadrina larmeui Akers 1955
Rank: species
Type specimens: Holotype No. 105
Type sample (& lithostrat): (core 9110-9112 feet) of Shell Godchaux Sugars No. 1
Type age (chronostrat): Miocene Operculinoides 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-4756 USNM-4757

Current identification/main database link: Dentoglobigerina larmeui (Akers, 1955)


Original Description

Test small, dorsally flattened and showing all chambers; ventrally inflated, umbilicate, showing only three of the four chambers which constitute the final coil. Apertural face of last chamber not so inflated as other surface of chamber, flattened, slanting strongly inwards to umbilicus; wall finely perforate; aperture a short narrow opening at the base of the last chamber covered by a small thin labrum which projects inwards and downwards.

Size:
Height of holotype, 0.34 mm.; width, 0.27 mm.; thickness, 0.20 mm

Etymology:
The species is named for Mr. E. J. Larmeu of the California Company.

Extra details from original publication
This species is more similar than other described species of Globoquadrina to members of the genus Globigerina because of its higher, more inflated last chamber. The nature of the aperture is typically globoquadrine, however,  G. larmeui, n. sp., differs from G. obesa, n. sp., in having a smaller final chamber which is not depressed.

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

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