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> >>

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:
TagsLITHS: murolith, elliptical, CA: ca_conjunct, plate, pores, bar, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith 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:

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


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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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