CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina daubjergensis Bronnimann 1953
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 "The specimens are very small for the genus [Globigerina]. The outline of the trochoid test is distinctly lobulate. The spiral side is pointed in the initial portion. The umbilicus is small and shallow. The final whorl, the dominant portion of the test, consists of 3 to 4 gradually in size increasing subglobular chambers. The sutures of the final whorl are strongly incised, those of the early test are not clearly visible. The extremely small, subcircular aperture opens into the shallow umbilical depression. The rough surface is covered by minute irregularly distributed spines. The thin walls are finely perforate. The direction of coiling is undetermined, 11 out of 19 specimens are coiling to the right hand side.
The maximum diameter of the tests varies from 0.125 mm to 0.2 mm, average 0.15 mm. The height of the test is +/- 0.12 mm and the aperture has a diameter of +/-0.02 mm. Common in sample 38. "
References:
Brönnimann, P. (1953). Note on planktonic foraminifera from Danian localities of Jutland, Denmark. Eclogae Geologicae Helvetiae. 45: 339-341. gsVO
Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs
Globigerina daubjergensis compiled by the pforams@mikrotax project teamviewed: 22-3-2023
Olsson_etal_99_pl15_f13-14.jpg
Olsson_etal_99_pl15_f13-14.jpg
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