Bolli1957 pl17 13-15.JPG
Olsson_etal_99_pl14_f09-11.jpg
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.
Bolli1957 pl17 13-15.JPG
Olsson_etal_99_pl14_f09-11.jpgLinked specimens: USNM-5048
Current identification/main database link: Praemurica uncinata (Bolli 1957)
Original Description
Shape of test low trochospiral, spiral side almost flat or slightly convex, umbilical side distinctly convex; equatorial periphery distinctly lobate; axial periphery rounded to subangular. Wall calcareous, perforate, surface finely spinose. Chambers subangular, inflated, laterally compressed; 12-15, arranged in about 2 1/2 whorls, the 5-6 chambers of the last whorl increasing moderately in size. Sutures on spiral side strongly curved, depressed; on umbilical side radial, depressed. Umbilicus fairly narrow, deep, open. Aperture a low arch; interiomarginal, extraumbilical-umbilical. Coiling random.
Size: Largest diameter of holotype 0.35 mm.
Extra details from original publication
Globorotalia uncinata Bolli, new species, differs from the related G. pseudobulloides (Plummer)
in having subangular, laterally distinctly truncated chambers and more strongly cmved sutures on the
spiral side. An intermediate specimen is shown on plate 17, figures 16-18 (USNM P5075). Globorotalia
uncinata is regarded as the ancester of Globorotalia angulata (White). A transitional form between these
two species is shown on plate 17, figures 10-12 (USNM P5074).
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. gs V O Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gsReferences:
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Globorotalia uncinata compiled by the pforams@mikrotax project team viewed: 5-3-2021
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