Taxonomy:
Distinguishing features:
Parent taxon (Blackites deflandrei): Spine relatively low, wide, hollow sacculiform; constructed from at least two distinct structural units when viewed in XPL; there may be a small, terminal papilla.
Typically the height and width are similar but the height can be greater. The spine is always slightly narrower than the base.
This taxon: spine height > coccolith rim width
Farinacci & Howe catalog pages:
Like B. deflandrei var. 1 but with with spine height>coccolith rim width.
Morphology:
LITHS: planolith, elliptical, circular, CA: ca_disjunct, grill, process, |
Lith size: 5->8µm; Data source notes: lith size (spine height) from illustrated specimens |
Geological Range:
Last occurrence (top): within NP19-20 zone (34.44-36.97Ma, top in Priabonian 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:
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Blackites deflandrei 2 compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-2-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=99 Go to Archive.is to create a permanent copy of this page - citation notes |
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