Pontosphaera wilsonii


Classification: Coccolithophores -> 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: Pontosphaera wilsonii *


Morphology remarks: 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, RIM: outer wall acw-imbricate, CA: bar-diagonal, bar-diagonal NW-SE, pores, bar,
CSPH: not known, V-UNITS: outer-rim, V-prominent, R-UNITS: c-str, inner-rim, px-plate, R-prominent, DETAILS: ca_conjunct, rim-bicyclic, isogyres oblique, isogyres separated,
MetricsLith size: 6->8µm;
Sources: 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:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Pontosphaera

    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 :: view :: open


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    Pontosphaera wilsonii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 5-6-2020

    Taxon Search:
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    Short stable page link: http://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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