Sphenolithus richteri


Classification: Coccolithophores -> 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: Sphenolithus richteri * , ,


Size: Holotype length 4.3 microns

Search data:
TagsLITHS: nannolith-radiate, N: 3D-radiate, conical, circular, PROCESS: length-fast, multicrystalline, spine,
CSPH: not known, R-UNITS: all, lower-tier, spine, middle-tier, DETAILS: isogyres radial,
MetricsLith size: 3->5µm;
Sources: 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:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: S. radians group

    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

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    Sphenolithus richteri compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-7-2019

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    Short stable page link: http://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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