Daktylethra probertii

Taxonomy:

Distinguishing features: Cavate holococcolith, seen in side-view, comprising a thin proximal plate and rim that are crystallographically distinct from a large, perforate, domed distal process. Typically, birefringent at 0° in XPL, darkening when rotated to 45°.

Farinacci & Howe catalog pages: D. probertii *

Geological Range:
Last occurrence (top): within NP16 zone (40.40-42.87Ma, top in Bartonian stage). Data source: Bown & Dunkley Jones, 2006
First occurrence (base): within NP14b subzone (46.29-47.84Ma, base in Lutetian stage). Data source: Bown & Dunkley Jones, 2006

Plot of occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Markalius sp., synonyms included - Daktylethra probertii; Markalius sp.; Markalius sp. 1; Markalius sp. 2; Markalius sp. cf. nudus;
• See also space-time plot :: Samples map :: Parent: Daktylethra

Daktylethra probertii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-2-2021 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=428 Go to Archive.is to create a permanent copy of this page - citation notes

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