Taxonomy:
Distinguishing features: Small, thin-walled, cavate holococcolith with a domed upper surface. The cavate central-area space is filled with small, birefringent elements and at least two prominent vertical plates.
Farinacci & Howe catalog pages: V. macleodii *
Search data:Tags | LITHS: holococcolith, elliptical, hollow, CA: closed, CROSS-POLARS: V-prominent, R-prominent, |
Metrics | Lith size: 3.5->4.2µm; Data source notes: lith size (width) from OD |
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 NP19-20 zone (34.44-36.97Ma, base in Priabonian stage). Data source: Dunkley Jones et al., 2009
Plot of occurrence data:
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. gsReferences:
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Varolia macleodii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-2-2021
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