arrayname: original 
Nannotax3 - ntax_cenozoic - Blackites sextonii Nannotax3 - ntax_cenozoic - Blackites sextonii

Blackites sextonii


Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Blackites -> B. inflatus group -> Blackites sextonii
Sister taxa: B. aktulagayensis, B. bullatus, B. creber, B. culter, B. flammeus, B. fustis, B. gladius, B. globosus, B. herculesii, B. inflatus, B. kilwaensis, B. ornatus, B. piriformis, B. praeinflatus, B. pseudomorionum, B. rotundus, B. rugosus, B. sextonii, B. turritus, B. virgatus

Taxonomy:

Citation: Blackites sextonii Bown & Newsam 2017
Taxonomic rank: species

Farinacci & Howe catalog pages: B. sextonii *


Morphology:

Blackites with broad base, and very tall, broad, thin-walled spine. The broad spine is near-parallel sided or very gently tapering for most of its length before tapering sharply to a point.
Differentiation: Distinguised from other Blackites by its broad, very tall spine.

Size:
Holotype max coccolith base W = 5.9μm; spine L = 13.1μm, spine W = 2.3μm (Paratype spine L = 12.7μm).

Search data:
LITHS: planolith, circular, elliptical, CA: ca_disjunct, grill, process,
Lith size: 10->16µm;
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 NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: Bown & Newsam 2017
First occurrence (base): within NP16 zone (40.40-42.87Ma, base in Lutetian stage). Data source: Bown & Newsam 2017

Plot of occurrence data:

References:

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs O


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Blackites sextonii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-3-2025

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=120 Go to Archive.is to create a permanent copy of this page - citation notes
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