CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinita incrusta 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 -> Globigerinita -> Globigerinita incrusta
Other pages this level: G. africana, G. bikiniensis, G. boweni, G. dissimilis ciperoensis, G. globiformis, G. glutinata flparkerae, G. hardingae, G. howei, G. incrusta, G. iota, G. martini, G. martini martini, G. martini scandretti, G. naparimaensis, G. parkerae, G. riveroae, G. stainforthi praestainforthi, G. unicava primitiva

Globigerinita incrusta

Citation: Globigerinita incrusta Akers 1955
Rank: species
Type locality: Section 23, Township 19 South, Range 19 East, Lirette Field, Terrebonne Parish, Louisiana.
Type age (chronostrat): Miocene Cibicides carstensi var. opimus zone
Type sample (& lithostrat): core 10,132-10,142 feet of Humble Oil and Refining Company Ellender No.1
Type specimens: Holotype No. 102
Type repository: New Orleans; California Company Collection, New Orleans, Louisiana.

Linked specimens: USNM-4753 USNM-4752

Current identification/main database link: Globigerinita glutinata (Egger, 1893)


Original Description
Test very small, trochoidal; spire with three whorls. Chambers subglobular, gradually increasing in size, non-enveloping. Adult with four large and well separated sub-globular chambers. Initial chamber very minute, usually not visible. Umbilical region of adult covered with a single, irregularly shaped, rather thin and smooth supplementary chamber which branches out into the sutural grooves. Aperture of adult multiple consisting of a small semicircular opening at the end of each branch of the supple- mentary chamber. Apertures of chambers formed prior to the supplementary chamber are single, small semicircular openings. Walls are finely perforate.

Size: Height of holotype, 0.16 mm.; width, 0.14 mm.; thickness, 0.11 mm.

Extra details from original publication
This species differs from Globigerinita naparimaensis Bronnimann in its consistently smaller size; in having openings only at the branches of the supplementary chamber instead of along the sutures of the supplementary chamber; and in having a much smaller aperture in the globiberina chambers formed prior to the supplementary growth. It differs from Globigerinita glutinata (Egger) in having fewer openings of the supplementary chamber and in the confinement of these openings to the ends of branches of the supplementary chambers

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

Pearson, P. N., Wade, B. S. & Huber, B. T. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globigerinitidae (Dipsidripella, Globigerinita, and Tenuitella). 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 16): 429-458. gs V O


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Globigerinita incrusta compiled by the pforams@mikrotax project team viewed: 24-11-2020

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