Pontosphaera wilsonii


Classification: ntax_cenozoic -> Zygodiscales -> Pontosphaeraceae -> Pontosphaera -> Pontosphaera wilsonii
Sister taxa: << < P. panarium, P. versa, P. wallacei, P. latoculata, P. sp.A ⟩⟨ P. formosa, P. wechesensis, P. fimbriata, P. brinkhuisii, P. hollisii, P. romansii ⟩⟨ P. japonica, P. plana, P. rimosa ⟩⟨ P. pectinata, P. wilsonii, P. punctosa, P. clinosulcata, P. perforomarginata, P. pulcheroides, P. pulchra, P. pygmaea ⟩⟨ P. ocellata, P. duocava, P. exilis, P. pax ⟩⟨ P. obliquipons, T. omarians ⟩⟨ P. sp.

Taxonomy:

Citation: Pontosphaera wilsonii Bown & Newsam 2017
Rank: Species

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]

Search data:
TagsLITHS: murolith, elliptical, CA: ca_conjunct, pores, bar, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 6->8µm;
Data source notes: lith size from OD and slightly extended
The morphological data given here can be used on the advanced search page. See also these notes

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:

References:

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O


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Pontosphaera wilsonii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-4-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1104 Go to Archive.is to create a permanent copy of this page - citation notes



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