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Umbilicosphaera bramlettei (Hay & Towe, 1962) Bown et al., 2007

Edited by Lyndsey on Thu, 10/03/2011 - 16:09

Umbilicosphaera bramlettei (Hay & Towe, 1962) Bown et al., 2007

Description: Small to medium sized (3.5-7.5 µm), ring-shaped coccoliths with narrow shields (distinctly bicyclic in XPL) and a wide, open central-area. The two cycles are similar in width; the bright inner cycle is crossed by non-axial extinction lines.

Remarks:

Geological Time Data
Geological Time Periods: 
NP21
NP6
Biblio Reference: 
Varol, O.  1998.  Palaeogene. Calcareous nannofossil biostratigraphy. :200-224.
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