arrayname: original
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: Large Pontosphaera with flaring rim, central area filled by coarse radial crystals
Farinacci & Howe catalog pages: P. wallacei *
Search data:
LITHS: murolith, elliptical, CA: closed, CROSS-POLARS: V-prominent, R-prominent, rim-unicyclic, |
Lith size: 8->12µm; Data source notes: lith size from OD & illustrated specimens |
Geological Range:
Last occurrence (top): within NN2 zone (19.00-22.82Ma, top in Burdigalian stage). Data source: original description
First occurrence (base): within NP24 zone (26.84-29.62Ma, base in Rupelian stage). Data source: original description
Plot of occurrence data:
Persico, D. & Villa, G. (2013). A new Oligocene-Miocene calcareous nannofossil species: Pontosphaera wallacei. Revue de Micropaléontologie. 56: 97-102. gsReferences:
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Pontosphaera wallacei compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-3-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1102 Go to Archive.is to create a permanent copy of this page - citation notes |
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