Varolia sicca


Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Varolia -> Varolia sicca
Sister taxa: V. boomeri, V. cistula, V. gracilimura, V. macleodii, V. sicca, V. sp.

Taxonomy:

Citation: Varolia sicca Bown & Dunkley Jones, 2006
Rank: Species

Distinguishing features: Small, elliptical to lenticular coccolith with a narrow, birefringent rim (as viewed in light microscope). When orientated at 0° the rim is crossed by narrow N-S and E-W extinction lines.

Farinacci & Howe catalog pages: V. sicca *

Search data:
TagsLITHS: holococcolith, elliptical, hollow, CA: vacant, CROSS-POLARS: V-prominent, R-prominent,
MetricsLith size: 2.5->3.5µm;
Data source notes: lith size from OD & extended slightly
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP21 zone (32.92-34.44Ma, top in Rupelian stage). Data source: Dunkley Jones et al., 2009
First occurrence (base): within NP15b subzone (44.12-45.49Ma, base in Lutetian stage). Data source: Dunkley Jones et al., 2009

Plot of occurrence data:

References:

Bown, P. R. & Dunkley Jones, T. (2006). New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research. 28(1): 17-34. gs V O

Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs


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Varolia sicca compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1481 Go to Archive.is to create a permanent copy of this page - citation notes



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