Catalog - Globigerinoides obliqua Catalog - Globigerinoides obliqua

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinoides obliqua Bolli 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 -> G -> Globigerinoides -> Globigerinoides obliqua
Other pages this level: << < G. hyalinus, G. index, G. indigena, G. inusitatus, G. italicus, G. japonicus, G. joli, G. kennetti, G. korotkovi, G. kuehni, G. macrostoma, G. minuta, G. mitra, G. muratae, G. nuttalli, G. obliqua, G. obliquus amplus, G. obliquus extremus, G. parawoodi, G. parkerae, G. parva, G. pseudodubia, G. pseudoruber, G. pseudosellii, G. quadrilobatus hystricosus, G. quadrilobatus praeimmaturus, G. quadrilobatus primordius, G. ruber albus, G. ruber parkeri, G. rublobatus, G. rubra seigliei> >>

Globigerinoides obliqua

Citation: Globigerinoides obliqua Bolli 1957
taxonomic rank: Species
Type specimens: Holotype:P5634. Figured paratypeP5635.
Type age (chronostrat): Globorotalia mayeri zone
Type locality: Type locality of the Globorotalia mayeri zone, Trinidad, sample KR 23422 (TTOC 160634).
Type repository: Washington; USNM

Linked specimens: USNM-5635 USNM-5634

Current identification/main database link: Globigerinoides obliquus Bolli, 1957

Original Description

Shape of test trochospiral; equatorial periphery distinctly lobate; axial periphery rounded. Wall calcareous, perforate, surface finely pitted. Chambers spherical, except the ultimate ones, which are compressed in a lateral oblique manner; 12-15, arranged in about 3 whorls; the 3, in large specimens 4, chambers of the last whorl increase rapidly in size; in large specimens the last chamber may be reduced again in size. Sutures on spiral side radial to oblique, depressed; on umbilical side radial, depressed. Umbilicus small. Primary aperture a distinct, often fairly high arch, interiomarginal, umbilical; one or occasionally two supplementary sutural apertures are visible in the last few chambers.

Largest diameter of holotype 0.5 mm.

Extra details from original publication
Remarks: Globigerinoides obliqua, new species, is distinguished from the Globigerinoides triloba group by having the ultimate or the last few chambers compressed in a lateral, oblique manner. In Globigerinoides triloba they remain spherical and in the subspecies sacculifera become elongate, sack-like shaped.
Stratigraphic range (in Cipero and Lengua formations) : Globorotalia kugleri zone to Globorotalia menardii zone.

Editors' Notes
The name often appears as Globigerinoides obliquus Bolli 1957 but the correct form is obliqua since the genus is feminine, and Bolli did use this form.


Bolli, H. M. (1957b). Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli & E. Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 97-123. gs

Spezzaferri, S., Olsson, R. K. & Hemleben, C. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene to Lower Miocene Globigerinoides and Trilobatus. 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 9): 269-306. gs


Globigerinoides obliqua compiled by the pforams@mikrotax project team viewed: 26-5-2024

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