CATALOG OF ORIGINAL DESCRIPTIONS: Bolivina daniana Nakkady & Tallat, in Nakkady 1959

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 -> B -> Bolivina -> Bolivina daniana
Other pages this level: B. daniana, B. globulosa, B. tokelauae

Bolivina daniana

Citation: Bolivina daniana Nakkady & Tallat, in Nakkady 1959
Rank: species
Type locality: Um Elghanayem section, Egypt. 25.58N; 30.73E
Type age (chronostrat): Danian
Type sample (& lithostrat): G11
Type specimens: Plate 6, figures 5a-c, 6a-c
Type repository: USNM

Linked specimens: USNM-472055 USNM-643141 USNM-643140

Current identification/main database link:


Original Description
Test wedge-shaped, slightly flattened, tapering sharply toward the slightly twisted initial end. Chambers in about five pairs, rapidly increasing in breadth and thickness near the last two pairs, which make up about two-thirds of the length of the test. The last chamber overlaps the penultimate one in such a manner that the test appears to have been crushed, with one chamber gliding over the other. Sutures straight or slightly curved, depressed, with the line of junction between the two series distinctly zigzag. Wall finely perforate; aperture a very small loop-shaped opening, extending up from the base of the last chamber.

Size: Holotype: Length 0.24 mm.; breadth 0.14 mm.; thickness 0.09 mm.;

Extra details from original publication
Remarks: This new bolivine can scarcely be compared with any known species, its principal distinguishing characters being the apparently crushed form of the test and the overlapping position of the last chamber.

Distribution: Bolivina daniana is a flood form in the top sample of the lower Esna shales and in the basal layers of the Echinocorys chalk.

References:

Nakkady, E. (1959). Biostratigraphy of the Um Elghanayem section, Egypt. Micropaleontology. 5: 453-472. gs


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Bolivina daniana compiled by the pforams@mikrotax project team viewed: 5-12-2020

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