Taxonomy:
Distinguishing features: Elliptical pontosphaerid with central area plate crossed by prominent oblique ridges that are bright in cross-polarised light.
Farinacci & Howe catalog pages: P. wilsonii *
Morphology: Elliptical pontosphaerid with central area plate crossed by prominent oblique ridges that are bright in cross-polarised light.
Differentiation: Distinguised from other Pontosphaera by the distinctive oblique ridges than run across the coccolith. [Bown & Newsam 2017]
Size: Holotype L = 6.7μm (Paratype L = 7.4μm). [Bown & Newsam 2017]
Tags | LITHS: murolith, elliptical, CA: ca_conjunct, pores, bar, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent, |
Metrics | Lith size: 6->8µm; Data source notes: lith size from OD and slightly extended |
Geological Range:
Last occurrence (top): within NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: Bown & Newsam 2017
First occurrence (base): within NP15 zone (42.87-46.29Ma, base in Lutetian stage). Data source: Bown & Newsam 2017
Plot of occurrence data:
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Pontosphaera wilsonii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-2-2021
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