CATALOG OF ORIGINAL DESCRIPTIONS: Biglobigerinella barri Bolli, Loeblich and Tappan 1957

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 -> Biglobigerinella -> Biglobigerinella barri
Other pages this level: B. barri, B. kerisensis, B. multispina, B. pulchra,

Biglobigerinella barri

Citation: Biglobigerinella barri Bolli, Loeblich and Tappan 1957
Rank: Species
Type locality: Maridale Estate, eastern Central Range, Trinidad
Type level: Aptian
Holotype Repository: USNM
Holotype number: 4543

Linked specimens: USNM-4545 USNM-4544 USNM-4544 USNM-4544 USNM-4544 USNM-4544 USNM-4543

Current identification/main database link: Globigerinelloides barri (Bolli, Loeblich and Tappan, 1957)


Original Description: Test free, planispiral, biumbilicate, nearly involute to evolute; peripheral margin somewhat lobulate; chambers ovate to nearly spherical, 8-10 in the final planispiral whorl; in some specimen a smaller low but broad final chamber may cover a double-apertured penultimate chamber or there may be a small chamber at each side of the periphery, each covering one of the lateral apertures of the penultimate chamber; sutures distinct, depressed, radial in the early portion, becoming signoid in the later stages; wall calcareous, finely perforate, surface distinctly rugose I the early portion, later chambers nearly smooth or pitted; aperture interiomarginal, in the early stage equatorial, a low arch bordered above with a narrow lip, in the later stge there is a double aperture consisting of a small extraumbilical arch at each side of the last chamber, or one to each of the final paired chambers which may extend almost into the umbilicus, each aperture bordered by a lip.

References:

Bolli, H.M.; Loeblich, A.R., Jr. & Tappan, H., (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. In: Loeblich, A.R., Jr. et al. (Editors), Studies in Foraminifera, U.S. National Museum Bulletin 215. U.S. Government Printing Office, Washington, DC, pp. 3-50.


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Biglobigerinella barri compiled by the pforams@mikrotax project team viewed: 22-7-2017

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