Micrantholithus attenuatus


Classification: ntax_cenozoic -> Braarudosphaerales -> Braarudosphaeraceae -> Micrantholithus -> Micrantholithus attenuatus
Sister taxa: M. breviradiatus, M. disculus, M. flos ⟩⟨ M. astrum, M. entaster, M. excelsus, M. hebecuspis, M. minimus, M. pinguis, M. vesper ⟩⟨ M. attenuatus, M. mirabilis ⟩⟨ M. angulosus, M. bramlettei, M. bulbosus, M. crenulatus, M. tinus, M. sp.

Taxonomy:

Citation: Micrantholithus attenuatus Bramlette & Sullivan, 1961
Rank: Species
Variants:

Distinguishing features: Stellate Micrantholithus with deeply indented sides and gracile, long rays.

Farinacci & Howe catalog pages: M. attenuatus * , M. aequalis * , M. inaequalis * , M. articulatus *

Search data:
TagsLITHS: nannolith-radiate, pentagonal, star-shaped, CROSS-POLARS: T-prominent,
MetricsLith size: 10->30µm; Segments: 5->5; Liths per sphere: 12->12
Data source notes: lith size (diameter) from ODs & illustrated specimens; lith numbers assumed from geometry
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP23 zone (29.62-32.02Ma, top in Rupelian stage). Data source: [PRB rough estimate]
First occurrence (base): within NP9 zone (55.86-57.21Ma, base in Thanetian stage). Data source: Bown 2005

Plot of occurrence data:

References:

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

Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs

Bukry, D. & Percival, S. F. (1971). New Tertiary calcareous nannofossils. Tulane Studies in Geology and Paleontology. 8: 123-146. gs V O

Martini, E. (1961). Nannoplankton aus dem Tertiär und der obersten Kreide von SW-Frankreich. Senckenbergiana Lethaea. 42: 1-32. gs

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

Sullivan, F. R. (1964). Lower Tertiary nannoplankton from the California Coast Ranges. I. Paleocene. University of California Publications in Geological Sciences. 44: 163-227. gs


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Micrantholithus attenuatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-6-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=858 Go to Archive.is to create a permanent copy of this page - citation notes



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