CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina ampliapertura 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 -> Globigerina -> Globigerina ampliapertura
Other pages this level: Globigerina (Globigerinella), G. achtschacujmensis, G. adriatica, G. aequabilis, G. aequatorialis, G. aequilateralis, G. aequilateralis involuta, G. affinis, G. alanwoodi, G. almadenensis, G. alpigena, G. altispira, G. ampliapertura, G. ampliapertura cancellata, G. anconitana, G. angipora, G. angiporoides, G. angiporoides minima, G. angulata, G. anguliofficinalis, G. antarctica, G. antillensis, G. apertura, G. applanata, G. aptica, G. aquiensis, G. arabica, G. archaeobulloides> >>

Globigerina ampliapertura

Citation: Globigerina ampliapertura Bolli 1957
Rank: Species
Type locality: Globigerina ampliapertura zone, Cipero type section, Trinidad.
Type age (chronostrat): Oligocene
Type specimens: Holotype (USNM P5603) and figured paratype (USNM P5604), sample Bo SUA (TTOC 215658) and figured paratypes (USNM P5605a,b), sample JS 19 (TTOC 193264), all from the Globigerina ampliapertura zone, Cipero type section, Trinidad.
Type repository: Washington; USNM

Linked specimens: USNM-5605 USNM-5603 USNM-5604 USNM-5605

Current identification/main database link: Turborotalia ampliapertura Bolli 1957


Original Description
Shape of test trochospiral; spiral side almost flat to slightly convex, umbilical side convex; equatorial periphery lobate; axial periphery rounded. Wall calcareous, perforate, surface finely pitted. Chambers spherical in the early stage, becoming somewhat compressed laterally in the last whorl; about 12, arranged in 2 1/2 whorls; the usually 4 chambers of the last whorl increase rapidly in size. Sutures on spiral side radial to oblique, depressed; on umbilical side radial, depressed. Umbilicus fairly small, deep. Aperture a high, distinct arch; interiomarginal, umbilical. Coiling random. .

Size: Largest diameter of holotype 0.55 mm

Extra details from original publication
Remarks: Globigerina ampliapertura, new species, is distinguished from G. venezuelana in having a larger, distinctly arched aperture. It differs from G. apertura Cushman, which was described from the Miocene, in having the chambers of the last whorl somewhat com-
pressed laterally and in the aperture being smaller in relation to the chamber size. The G. apertura mentioned by Bronnimann (1950, p. 80) from the Cipero formation is a G. ampliapertura. The new species occurs also in the upper Eocene.

References:

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 V O

Pearson, P. N., Premec-Fucek, V. & Premoli Silva, I. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Turborotalia. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 41(Chap 15): 433-460. gs V O

Pearson, P. N., Olsson, R. K., Spezzaferri, S. & Leckie, R. M. (2018a). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globanomalinidae (Turborotalia and Pseudohastigerina). 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 14): 403-414. gs V O


logo

Globigerina ampliapertura compiled by the pforams@mikrotax project team viewed: 19-4-2021

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=130335 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics