Taxonomy:
Distinguishing features: Small to large Micrantholithus with shallowly indented sides and rounded apices.
Farinacci & Howe catalog pages: M. breviradiatus * , B. undata *
Search data:Tags | LITHS: nannolith-radiate, pentagonal, star-shaped, CROSS-POLARS: T-prominent, |
Metrics | Lith size: 3->9µm; Segments: 5->5; Liths per sphere: 12->12 Data source notes: lith size (diameter) from OD; lith numbers assumed from geometry |
Geological Range:
Last occurrence (top): within NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: [PRB rough estimate]
First occurrence (base): within NP6 zone (58.97-59.54Ma, base in Selandian stage). Data source: [PRB rough estimate]
Plot of occurrence data:
Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. 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 Bown, P. R. (2016). Paleocene calcareous nannofossils from Tanzania (TDP sites 19, 27 and 38). Journal of Nannoplankton Research. 36(1): 1-32. gs V O Stradner, H. (1959a). Die fossilen Discoasteriden Osterreichs. II. Erdoel-Zeitschrift. 75(12): 472-488. gsReferences:
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Micrantholithus breviradiatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-2-2021
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