Nannotax3 - ntax_cenozoic - Semihololithus sp. cf. S. biskayae

Semihololithus sp. cf. S. biskayae

Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Semihololithus -> Semihololithus sp. cf. S. biskayae
Sister taxa: S. biskayae, S. dimidius, S. kanungoi, S. pseudobiskayae, S. sp. cf. S. biskayae, S. tentorium, N. figularia, N. hexaporus, S. sp.

Bown_and_DunkleyJones2006 pl5-fig23.jpg
Bown_and_DunkleyJones2006 pl5-fig21.jpg
Bown_and_DunkleyJones2006 pl5-fig22.jpg
Bown_and_DunkleyJones2006 pl5-fig24.jpg
Bown_and_DunkleyJones2006 pl5-fig25.jpg

Taxonomy:

Citation: Semihololithus cf. S. biskayae Perch-Nielsen, 1971

Rank: Species

Distinguishing features: Similar to Semihololithus biskayae but smaller and with a thinner proximal plate and relatively larger central cavity.

Farinacci & Howe catalog pages:

Search data:

Tags	LITHS: holococcolith, elliptical, CA: pores, bar, CROSS-POLARS: R-prominent,
Metrics	Lith size: 0->0µm;

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

Geological Range:
Last occurrence (top): within NP9 zone (55.86-57.21Ma, top in Ypresian stage). Data source: Bown 2005
First occurrence (base): within NP9 zone (55.86-57.21Ma, base in Thanetian stage). Data source: Bown 2005

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: Semihololithus

References:

Bown, P. R. & Dunkley Jones, T. (2006). New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research. 28(1): 17-34. gs V O

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

Perch-Nielsen, K. (1971d). Neue Coccolithen aus dem Paläozän von Dänemark, der Bucht von Biskaya und dem Eozän der Labrador See. Bulletin of the Geological Society of Denmark. 21: 51-66. gs V O

Semihololithus sp. cf. S. biskayae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-2-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1247 Go to Archive.is to create a permanent copy of this page - citation notes

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