Taxonomy:
Distinguishing features: Medium-sized, thin-walled, dome-like holococcolith. The thin, birefringent walls form a proximal plate and a domed upper surface. The dome broadens distally from the basal plate, and is of similar height and width or taller.
Farinacci & Howe catalog pages: V. gracilimura *
Search data:Tags | LITHS: holococcolith, elliptical, hollow, CA: closed, CROSS-POLARS: V-prominent, R-prominent, |
Metrics | Lith size: 3.5->5.5µm; Data source notes: lith size (larger of height & width) from OD |
Geological Range:
Last occurrence (top): within NP17 zone (37.32-40.40Ma, top in Priabonian stage). Data source: Bown 2005
First occurrence (base): within NP15b subzone (44.12-45.49Ma, base in Lutetian stage). Data source: Bown 2005
Plot of occurrence data:
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Varolia gracilimura compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-4-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1479 Go to Archive.is to create a permanent copy of this page - citation notes |