Kokia stellata


Classification: Mesozoic -> Braarudosphaerales -> Other nannoliths with tangential c-axes -> Kokia -> Kokia stellata
Sister taxa: K. borealis, K. curvata, K. kayae, K. stellata, K. sp.,

Distinguishing features: Stellate, multiradiate, rosette-shaped nannolith constructed from 10-15 single crystal-unit rays joined for most of their length along curved sutures; low birefringence under XPL.


Taxonomy:

Citation: Kokia stellata Bown, 2005
Rank: Species

Farinacci & Howe catalog pages: Kokia stellata *

Distinguishing features: Stellate, multiradiate, rosette-shaped nannolith constructed from 10-15 single crystal-unit rays joined for most of their length along curved sutures; low birefringence under XPL.


Morphology remarks: Kokia borealis has fewer rays joined along straight sutures, and K. curvata has fewer rays that are overlapping.

Size: Diameter = 4.5-8.0 µm

Geological Range:
Last occurrence (top): within Berriasian Stage (139.39-145.01Ma, top in Berriasian stage). Data source: Bown 2005
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Bown 2005

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Kokia stellata, synonyms included - Kokia stellata;
  • space-time plot :: Samples map :: Parent: Kokia

    References:

    Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program. Scientific Results. 198: 1-82. gs

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    Kokia stellata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-11-2019

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