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: Nannoliths intermediate between Nannoconacaea and Braarudosphaeraceae
Daughter taxa (time control age-window is: 0-800Ma)![]() | Granddaughter taxa | ||||
![]() | ![]() | ![]() | ![]() | Hexalithus Six-rayed, stellate to hexagonal nannoliths. | |
![]() | ![]() | ![]() | Polycostella Globular and stellate nannoliths formed of 5-8 segments of stacked elements. Nannoconus-like in side view. |
Taxonomy:
Farinacci & Howe catalog pages: Transitional genera [no catalog entry yet]
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: Nannoliths intermediate between Nannoconacaea and Braarudosphaeraceae
Morphology:
Size:
Tags | LITHS: |
Metrics | Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): within Berriasian Stage (139.39-145.01Ma, top in Berriasian stage). Data source:
First occurrence (base): within Tithonian Stage (145.01-152.06Ma, base in Tithonian stage). Data source:
Plot of occurrence data:
![]() |
Transitional genera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-5-2022
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11375 Go to Archive.is to create a permanent copy of this page - citation notes |
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