CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina soldadoensis angulosa 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.
Citation: Globigerina soldadoensis angulosa Bolli 1957Rank: sub-speciesType specimens: P5037Type sample (& lithostrat): upper part of Lizard Springs Fm.Type age (chronostrat): Lower EoceneType locality: Holotype from Ravine Ampelu, about 1.25 miles southeast of the road junction of the Rio Claro-Guayaguayare road and the Trinidad Central Oilfields road leading to the abandoned Lizard Springs oilfield, in southeastern Trinidad, T.W.I (coordinates N:186505 links; E:556755 links), sample Rz. 293 (TLL 50512). Type repository: Washington; USNM
Original Description Shape of test low trochospiral, spiral side slightly convex to flat, umbilical side strongly inflated; equatorial periphery distinctly lobate; axial periphery subangular. Wall calcareous, perforate, distinctly spinose. Chambers subangular, inflated, about twelve, arranged in two and one-half whorls, the five chambers of the last whorl increasing fairly rapidly in size. Sutures on spiral side oblique, depressed; on umbilical side radial, depressed. Umbilicus medium-sized, open. Apertures low arches, interiomarginal-umbilical. The coiling random. Size: Largest diameter of holotype 0.57 mm. Extra details from original publication Remarks - Globigerina soldadoensis Bronnimann subsp. Angulosa differs from Globigerina soldadoensis Bronnimann in the more angular shape of the chambers. It also has a more restricted stratigraphic range.
References:
Berggren, W. A., Pearson, P. N., Huber, B. T. & Wade, B. S. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Acarinina. 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 9): 257-326. gsVO
Bolli, H. M. (1957d). The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation of Trinidad. 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: 61-82. gsVO
Globigerina soldadoensis angulosa compiled by the pforams@mikrotax project teamviewed: 25-3-2023
Bolli1957 pl16 04-06.JPG
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Bolli1957 pl16 04-06.JPG
Eocene_Atlas_pl09-3_fig13-15.jpg
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