Ellipsolithus pumex


Classification: ntax_cenozoic -> Coccolith families inc sed -> Coccolith genera inc sed -> Ellipsolithus -> Ellipsolithus pumex
Sister taxa: E. anadoluensis, E. aubryae, E. bollii, E. distichus, E. lajollaensis, E. macellus, E. pumex, E. sp.

Taxonomy:

Citation: Ellipsolithus pumex Bown 2016
Rank: Species

Distinguishing features: Medium-sized Ellipsolithus with relatively wide central area (width similar to the rim width) spanned by a finely perforate plate.

Farinacci & Howe catalog pages: E. pumex *


Morphology: Medium-sized Ellipsolithus with relatively wide central area (~width similar to the rim width) spanned by a finely perforate plate. The perforations are small and irregularly distributed, but are broadly arranged in two to three cycles. In XPL, the shields typically have grey interference colour and the tube has white interference colour. [Bown 2016]
Differentiation: Distinguished from other Ellipsolithus species by the finely perforate central area plate. Most similar to the early Eocene species Ellipsolithus aubryae Self-Trail, 2011, which is, however, larger and has a wider central area. The Paleocene species Ellipsolithus bollii Perch-Nielsen, 1977 has larger pores and a longitudinal ridge. [Bown 2016]

Size: 6.4-9.6 µm [Bown 2016]

Search data:
TagsLITHS: placolith, elliptical, CA: ca_conjunct, plate, pores, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 6->10µm;
Data source notes: lith length 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 V O

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Ellipsolithus pumex compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-4-2021

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