Distinguishing features:
Parent taxon (Braarudosphaerales): Nannoliths formed of multiple layers of thin elements, arranged with rotational symmetry, and showing tangential c-axis orientations.
This taxon: Genera incertae sedis with radial structure and tangential c-axis orientation
Daughter taxa (time control age-window is: 0-800Ma) | Granddaughter taxa | ||||
Kokia Stellate, multiradiate, rosette-shaped nannoliths constructed from >6 single crystal-unit radial rays that show grey to white birefringence under XPL. | |||||
Tegulalithus Cylindrical nannoliths, typically with flanges at both ends and so cotton-reel-shaped in side view. |
Taxonomy:
Farinacci & Howe catalog pages:
Distinguishing features:
Parent taxon (Braarudosphaerales): Nannoliths formed of multiple layers of thin elements, arranged with rotational symmetry, and showing tangential c-axis orientations.
This taxon: Genera incertae sedis with radial structure and tangential c-axis orientation
Search data:
Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): at top of Early Turonian Substage (100% up, 92.9Ma, in Turonian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Berriasian Stage (137.70-143.10Ma, base in Berriasian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Other nannoliths with tangential c-axes compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-9-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11374 Go to Archive.is to create a permanent copy of this page - citation notes |
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