Nannotax3 - ntax_cenozoic - Pontosphaera sp.A

Pontosphaera sp.A

Classification: ntax_cenozoic -> Zygodiscales -> Pontosphaeraceae -> Pontosphaera -> Pontosphaera sp.A
Sister taxa: P. multipora, P. discopora, P. distincta, P. enormis, P. desuetoidea, P. geminipora, P. longiforaminis, P. megapachydisca, P. veta ⟩⟨ P. syracusana, P. alta, 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> >>

PN71 KDansk pl27-03.JPG
PN71 KDansk pl31-04.JPG
BramlSull61pl03-03.JPG
PN71 KDansk pl27-05.JPG
PN71 KDansk pl27-06.JPG

Taxonomy:

Citation: Pontosphaera sp. A

Rank: Species

Taxonomic discussion: The images included here appear to illustrate an undescribed Early Eocene morphotype

Distinguishing features: Pontosphaera with flaring rim, central area with two large openings [my interpretation - JRY 2017]

Farinacci & Howe catalog pages:

Search data:

Tags	LITHS: murolith, elliptical, CA: ca_conjunct, plate, pores, bar, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Metrics	Lith size: 8->12µm;

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Early Eocene Sub-Epoch (47.84-55.96Ma, top in Ypresian stage). Data source:
First occurrence (base): within Early Eocene Sub-Epoch (47.84-55.96Ma, base in Ypresian stage). Data source:

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Pontosphaera

References:

Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs

Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs

Pontosphaera sp.A compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-1-2021

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1098 Go to Archive.is to create a permanent copy of this page - citation notes

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