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Nannotax3 - ntax_cenozoic - Blackites gamai Nannotax3 - ntax_cenozoic - Blackites gamai

Blackites gamai


Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Blackites -> B. clavus group -> Blackites gamai
Sister taxa: B. bipartitus, B. clavus, B. dupuisii, B. gamai, B. spiculiformis, B. thiedei

Taxonomy:

Citation: Blackites gamai Bown, 2005
Taxonomic rank: species

Distinguishing features:
Parent taxon (B. clavus group): Spine conical, tapering with maximum width near base
This taxon: Spine broad, hollow, bullet-shaped; initially broadens slightly before tapering gently to a point.
Typically the height of the spine is greater than the basal width.

Farinacci & Howe catalog pages: B. gamai *

Search data:
LITHS: planolith, circular, elliptical, CA: ca_disjunct, grill, process,
Lith size: 4->7µm;
Data source notes: lith size (spine height) 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 NP11 zone (53.70-54.17Ma, top in Ypresian stage). Data source: Bown 2005
First occurrence (base): within NP11 zone (53.70-54.17Ma, base in Ypresian 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 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 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


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Blackites gamai compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-3-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=105 Go to Archive.is to create a permanent copy of this page - citation notes
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