arrayname: original
Taxonomy:
Distinguishing features:
Parent taxon (B. clavus group): Spine conical, tapering with maximum width near base
This taxon: Spine vase-shaped constructed from two distinct structural units when viewed in XPL. Typically the height is about 2x the width, and the maximum spine width is similar to base width.
Farinacci & Howe catalog pages: B. bipartitus *
Morphology:
LITHS: planolith, circular, elliptical, CA: ca_disjunct, grill, process, |
Lith size: 5->8µm; Data source notes: lith size (spine height) from OD & slightly extended |
Geological Range:
Last occurrence (top): within NP15a subzone (45.49-46.29Ma, top in Lutetian stage). Data source: [PRB rough estimate]
First occurrence (base): within NP14b subzone (46.29-47.84Ma, base in Lutetian stage). Data source: [PRB rough estimate]
Plot of occurrence data:
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Blackites bipartitus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-3-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=90 Go to Archive.is to create a permanent copy of this page - citation notes |
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