Distinguishing features: Genera incertae sedis with radial structure and tangential c-axis orientation
|Daughter taxa (time control age-window is: 0-800Ma)||Granddaughter taxa|
Stellate, multiradiate, rosette-shaped nannoliths constructed from >6 single crystal-unit radial rays that show grey to white birefringence under XPL.
Cylindrical nannoliths, typically with flanges at both ends and so cotton-reel-shaped in side view.
Farinacci & Howe catalog pages:
Distinguishing features: Genera incertae sedis with radial structure and tangential c-axis orientationSearch data:
|Metrics||Lith size: 0->0µm;|
Last occurrence (top): at top of Albian Stage (100% up, 100.5Ma, in Albian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Berriasian Stage (0% up, 145Ma, in Berriasian stage). Data source: Total of range of species in this database
Plot of occurrence data:
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