Sphenolithus richteri


Classification: ntax_cenozoic -> Discoasterales -> Sphenolithaceae -> Sphenolithus -> S. radians group -> Sphenolithus richteri
Sister taxa: S. arthurii, S. orphanknollensis, S. pseudoradians, S. radians, S. richteri, S. runus, S. spiniger

Taxonomy:

Citation: Sphenolithus richteri Bown & Dunkley Jones, 2012
Rank: Species

Distinguishing features: Small narrow sphenolith with square base, comprising equidimensional quadrants, and tapering monocrystalline spine that is dark at 0° and bright at 45°.

Farinacci & Howe catalog pages: S. richteri *


Size: Holotype length 4.3 microns

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, CA: process, CROSS-POLARS: V-prominent, R-prominent,
MetricsLith size: 3->5µm;
Data source notes: lith height from OD
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: Bown & Dunkley Jones, 2012
First occurrence (base): within NP16 zone (40.40-42.87Ma, base in Lutetian stage). Data source: Bown & Dunkley Jones, 2012

Plot of occurrence data:

References:

Bown, P. R. & Dunkley Jones, T. (2012). Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research. 32(2): 3-51. gs V O


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Sphenolithus richteri compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-4-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1318 Go to Archive.is to create a permanent copy of this page - citation notes



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