Bomolithus supremus
Classification: ntax_cenozoic -> Discoasterales -> Heliolithaceae -> Bomolithus -> Bomolithus supremus
Sister taxa: B. aquilus, B. bramlettei, B. conicus, B. elegans, B. megastypus, B. supremus, B. sp.
Bown 2010 pl10-fig8.JPG
Self-Trail2011-pl8-15.JPG
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Taxonomy:
Citation: Bomolithus supremus Bown & Dunkley Jones, 2006Rank: Species
Distinguishing features: Circular lith with three distinct cycles, only the innermost exhibiting birefringence in XPL; the central area is a narrow hole or closed. The outermost cycle is dark in phase contrast and the distinct elements show obliquity. The innermost cycle shows white interference colours and is crossed by thick extinction lines that are rotated approximately 5° from axial.
Farinacci & Howe catalog pages: B. supremus *
Search data:
| Tags | LITHS: nannolith-radiate, circular, star-shaped, CROSS-POLARS: V-prominent, R-prominent, |
| Metrics | Lith size: 5->9µm;
Data source notes: size from OD & slightly extended |
The morphological data given here can be used on the advanced search page. See also these notes
Geological Range:
Last occurrence (top): within NP9 zone (55.86-57.21Ma, top in Ypresian stage). Data source: Bown & Dunkley Jones 2006
First occurrence (base): within NP9 zone (55.86-57.21Ma, base in Thanetian stage). Data source: Bown & Dunkley Jones 2006
Plot of occurrence data:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Bomolithus
References:
Bown, P. R. & Dunkley Jones, T. (2006). New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research. 28(1): 17-34. gs V O
Bown, P. R. (2010). Calcareous nannofossils from the Paleocene/Eocene Thermal Maximum interval of southern Tanzania (TDP Site 14). Journal of Nannoplankton Research. 31(1): 11-38. gs V O
Self-Trail, J. (2011). Paleogene Calcareous Nannofossils of the South Dover Bridge core, Southern Maryland (USA). Journal of Nannoplankton Research. 32(1): 1-28. gs V O
