CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina ciperoensis subsp. angustiumbilicata 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.
Original Description Shape of test very low trochospiral; equatorial periphery distinctly lobate, axial periphery rounded. Wall calcareous, perforate, surface smooth or very finely pitted. Chambers spherical; about 12, arranged in about 2½ whorls; the 4-5 chambers of the last whorl increase moderately to fairly rapidly in size. Sutures on spiral side depressed, radial; on umbilical side depressed, radial. Umbilicus small. Aperture a medium to low arch; interiomarginal, umbilical, often with a thin lip. Coiling random. Size: Largest diameter of holotype 0.24 mm Etymology: Extra details from original publication Remarks: Globigerina ciperoensis angustiumbilicata, new subspecies, is distinguished from G. ciperoensis ciperoensis by having a small umbilicus. The aperture, which is umbilical in position, may in some specimens show a tendency towards an umbilical—extraumbilical position.
Stratigraphic range (in Cipero formation): Globigerina ampliapertura zone to Catapsydrax dissimilis zone. Editors' Notes
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. gsVO
Pearson, P. N., Wade, B. S. & Huber, B. T. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globigerinitidae (Dipsidripella, Globigerinita, and Tenuitella). 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 16): 429-458. gsVO
Globigerina ciperoensis angustiumbilicata compiled by the pforams@mikrotax project teamviewed: 6-2-2023
Thank you for pointing this out. You are doubtless correct but the reason the information is currently missing from the site is that a comprehensive monograph on Oligocene planktic foraminifera is currently in press. As soon as this published a very large set of content from it will be incorporated into the website, as agreed with the publishers and all authors. However, in advance of this Oligocene taxa have only been included in the catalog not in the main database and even putting links to modern names is not practicable.
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Olig Atlas pl16-04 01-3.JPG
Bolli1957 pl22-12.JPG
angustiumbilicata_holo.jpg
Bolli1957 pl22-13.JPG
Olig Atlas pl16-04 01-3.JPG
Bolli1957 pl22-12.JPG
Comments
(1)
Current taxon name: Tenuitellinata angustiumbilicata
http://www.marinespecies.org/aphia.php?p=taxdetails&id=763803
Shawn
Thank you for pointing this out. You are doubtless correct but the reason the information is currently missing from the site is that a comprehensive monograph on Oligocene planktic foraminifera is currently in press. As soon as this published a very large set of content from it will be incorporated into the website, as agreed with the publishers and all authors. However, in advance of this Oligocene taxa have only been included in the catalog not in the main database and even putting links to modern names is not practicable.
Jeremy