Taxonomy:
Distinguishing features:
Parent taxon (Pontosphaera): Coccoliths are muroliths, central area with variable number of perforations. V-units form narrow imbricate outer wall, R-units form inner wall and central-area.
This taxon: Small to medium-sized; rim narrow; central area wide, spanned by a finely perforate plate
Farinacci & Howe catalog pages: P. veta *
Morphology:
Distinguished from other Pontosphaera species by the finely perforate central area plate. It is also significantly older than previously described species in this genus. [Bown 2016]
Size:
LITHS: murolith, elliptical, CA: ca_conjunct, pores, CROSS-POLARS: V-prominent, R-prominent, rim-bicyclic, |
Lith size: 5->8µm; Data source notes: lith size from OD and slightly extended |
Geological Range:
Last occurrence (top): within NP5 zone (59.54-61.51Ma, top in Selandian stage). Data source: Bown 2016
First occurrence (base): within NP5 zone (59.54-61.51Ma, base in Selandian stage). Data source: Bown 2016
Plot of occurrence data:
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Pontosphaera veta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-4-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1101 Go to Archive.is to create a permanent copy of this page - citation notes |
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