Braarudosphaera stylifera


Classification: Coccolithophores -> Braarudosphaerales -> Braarudosphaeraceae -> Braarudosphaera -> Braarudosphaera stylifera
Sister taxa: B. bigelowii, B. insecta, B. magnei, B. pentagonica, B. perampla, B. perversus, B. sequela, B. stylifera, B. sp.,

Taxonomy:

Citation: Braarudosphaera stylifera Troelsen & Quadros, 1971
Rank: Species
Synonyms: Braarudosphaera orthia Bybell & Gartner, 1972
Notes & discussion: Typically seen in side view.

Distinguishing features: Elevated pentaliths that taper sharply from the base.

Farinacci & Howe catalog pages: Braarudosphaera stylifera * , Braarudosphaera orthia + *


Size: Holotype height 8.25 microns and diameter 9.0 microns.

Search data:
TagsLITHS: nannolith-radiate, pentagonal,
CSPH: not known, T-UNITS: all,
MetricsLith size: 6->15µm; Segments: 5->5; Coccosphere size: 12->30µm; Liths per sphere: 12->12
Sources: lith size (diameter) from OD & illustrred specimens of Bown 2005; lith numbers assumed from geometry; csph size calculated from lith size
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP21 zone (32.92-34.44Ma, top in Rupelian stage). Data source: [PRB rough estimate]
First occurrence (base): within NP17 zone (37.32-40.40Ma, base in Bartonian stage). Data source: [PRB rough estimate]

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Braarudosphaera

    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

    Bybell, L. M. & Gartner, S. (1972). Provincialism among mid-Eocene calcareous nannofossils. Micropaleontology. 18(319-336): -. gs

    Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs

    Lambert, B. (1987). Nannofossiles calcaires de l'Albien supérieur et du Vraconnien du Cameroun méridional. Cahiers de Micropaléontologie. 2(2): 33-60. gs

    Troelsen, J. & Quadros, L. P. (1971). Distribuição bioestratigráfica dos nanofósseis em sedimentos marinhos (Aptiano-Mioceno) do Brasil. Anais da Academia Brasileira de Ciências. 43, 577-609: sulemento-. gs


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    Braarudosphaera stylifera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-10-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=154 Go to Archive.is to create a permanent copy of this page - citation notes



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