Nannotax3 - ntax_cenozoic - Pontosphaera veta Nannotax3 - ntax_cenozoic - Pontosphaera veta

Pontosphaera veta


Classification: ntax_cenozoic -> Zygodiscales -> Pontosphaeraceae -> Pontosphaera -> Pontosphaera veta
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> >>

Taxonomy:

Citation: Pontosphaera veta Bown 2016
Taxonomic rank: species

Distinguishing features:
Parent taxon (Pontosphaera): Coccoliths are muroliths, central area with variable number of perforations. V-units form narrow imbricate outer wall, R-units form inner wall and central-area.
This taxon: Small to medium-sized; rim narrow; central area wide, spanned by a finely perforate plate

Farinacci & Howe catalog pages: P. veta *


Morphology:

Medium-sized Pontosphaera with narrow rim and wide central area spanned by a finely perforate plate. The small perforations are circular to elongate and irregularly distributed, but are typically arranged in three cycles.
Distinguished from other Pontosphaera species by the finely perforate central area plate. It is also significantly older than previously described species in this genus. [Bown 2016]

Size:
5.6–7.2μm [Bown 2016]

Search data:
LITHS: murolith, elliptical, CA: ca_conjunct, pores, CROSS-POLARS: V-prominent, R-prominent, rim-bicyclic,
Lith size: 5->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 NP5 zone (59.54-61.51Ma, top in Selandian stage). Data source: Bown 2016
First occurrence (base): within NP5 zone (59.54-61.51Ma, base in Selandian stage). Data source: Bown 2016

Plot of occurrence data:

References:

Bown, P. R. (2016). Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38). Journal of Nannoplankton Research. 36(1): 1-32. gs O


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Pontosphaera veta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-4-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1101 Go to Archive.is to create a permanent copy of this page - citation notes
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