Distinguishing features:
Parent taxon (Kokia): Stellate, multiradiate, rosette-shaped nannoliths constructed from >6 single crystal-unit radial rays that show grey to white birefringence under XPL.
This taxon: Kokia formed of 7 segments, with long free-rays.
Taxonomy:
Farinacci & Howe catalog pages: K. kayae *
Distinguishing features:
Parent taxon (Kokia): Stellate, multiradiate, rosette-shaped nannoliths constructed from >6 single crystal-unit radial rays that show grey to white birefringence under XPL.
This taxon: Kokia formed of 7 segments, with long free-rays.
Morphology:
Size:
Tags | LITHS: nannolith-radiate, star-shaped, CA: closed, CROSS-POLARS: T-prominent, |
Metrics | Lith size: 10->15µm; Segments: 7->7; Data source notes: original description & illustrated specimens |
Geological Range:
Last occurrence (top): within Early Turonian Substage (92.90-93.90Ma, top in Turonian stage). Data source: original description
First occurrence (base): within Early Turonian Substage (92.90-93.90Ma, base in Turonian stage). Data source: original description
Plot of occurrence data:
Lees, J. A. & Bown, P. R. (2016). New and intriguing calcareous nannofossils from the Turonian (Upper Cretaceous) of Tanzania. Journal of Nannoplankton Research. 36(1): 83-95. gs V O Püttmann, T. & Mutterlose, J. (2019). Calcareous nannofossils from a Late Cretaceous nearshore setting. Journal of Nannoplankton Research. S4: 81-88. gs V OReferences:
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Kokia kayae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-7-2022
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10545 Go to Archive.is to create a permanent copy of this page - citation notes |
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