Taxonomy:
Distinguishing features:
Parent taxon (Rhomboaster): Solid nannoliths that include rhombic, rhombic with spinose extensions and forms composed of two superimposed tri-radiate cycles.
This taxon: Specimens which cannot be assigned to any established species
Farinacci & Howe catalog pages:
Search data:
Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): within NP10 zone (54.17-55.86Ma, top in Ypresian stage). Data source: same as genus
First occurrence (base): within NP9 zone (55.86-57.21Ma, base in Thanetian stage). Data source: same as genus
Plot of occurrence data:
Self-Trail, J. M., Powars, D. S., Watkins, D. K. & Wandless, G. A. (2012). Calcareous nannofossil assemblage changes across the Paleocene–Eocene Thermal Maximum: Evidence from a shelf setting. Marine Micropaleontology. 92–93: 61-80. gsReferences:
Rhomboaster sp. compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-10-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1206 Go to Archive.is to create a permanent copy of this page - citation notes |
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