Catalog - Globigerina tetracamerata <title>Catalog - Globigerina tetracamerata

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina tetracamerata Bolli & Bermudez 1965

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 -> Globigerina -> Globigerina tetracamerata
Other pages this level: << < G. stonei, G. subcorpulenta, G. subcretacea, G. subcretacea Chapman, G. subdigitata, G. subsphaerica, G. subtarchanensis, G. subtriloculinoides, G. supracretacea, G. taminensis, G. tarchanensis, G. tardita, G. taroubaensis, G. tecta, G. terquemi, G. tetracamerata, G. topilensis, G. triangularis, G. tricamerata, G. trigonula, G. triloba, G. trilocularis, G. triloculinoides, G. triloculinoides nanus, G. triloculinoides parva, G. tripartita tapuriensis, G. trivialis, G. tschikryzovi, G. tumbili, G. turbulenta, G. turcmenica> >>

Globigerina tetracamerata

Citation: Globigerina tetracamerata Bolli & Bermudez 1965
Rank: species
Described on page(s) : 138
Type specimens: Plate 1, Figures 7 -·9
Type sample (& lithostrat): Cumana formation. Sample Humberto Calderon no. 72.
Type age (chronostrat): Globorotalia truncatulinoides/ Globorotalia inflata Zone Lower-Middle Miocene
Type locality: La Cantera de'Araya, south side of Cerro Barrigon, Peninsula de Araya, Estado Sucre, Venezuela
Type repository: USNM

Linked specimens: USNM-642537 USNM-642536

Current identification:


Original Description

Shape of test trochospiral; equatorial perihery strongly lobate. Wall calcareous, very finely perforate. Chambers spherical, about 10, arranged in 2 to 2½ whorls; the 4 chambers of the last whorl increase rapidly in size but the final chamber may be reduced. Sutures on spiral and umbilical side radial, incised. Umbilicus distinct. Aperture of ultimate chamber a medium sized arch, often bordered by a thin lip or rim; interiomarginal, umbilical.

Size:
Largest diameter of holotype: 0.23 mm.

Etymology:

Extra details from original publication
Remarks: Globigerina tetracamerata is characterized by its small size and the four chambers in the last whorl. The general shape and apertural characteristics may be compared with those of Globigerina foliata Bolli which is, however, much larger.

Stratigraphic range: Globorotalia acostaensis Zone to Globorotalia truncatulinoides / Globorotalia inflata Zone, Lower Miocene to Pliocene, Cubagua and Cumana formations, Venezuela. Catapsydrax stainforthi Zone to Globorotalia menardii Zone, Lower Miocene to Middle Miocene, Cipero and Lengua formations, Trinidad. Globigerinatella insueta Zone to Globoquadrina altispira altispira/ Globorotalia crassaformis Zone, Lower Miocene to Upper Miocene, Kalibeng and Rembang beds in well Bodjonegoro-1, Java.

Editors' Notes

References:

Bolli, H. M. & Bermudez, P. J. (1965). Zonation based on planktonic foraminifera of middle Miocene to Pliocene warm-water sediments. Bol. Informativo, Asoc. Venez. Geol., Min. Petrol. 8(5): 121-149. gs


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Globigerina tetracamerata compiled by the pforams@mikrotax project team viewed: 28-1-2023

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