Biscutum neocoronum

Classification: Coccolithophores -> Mesozoic Survivors -> Biscutaceae -> Biscutum -> Biscutum neocoronum
Sister taxa: B. braloweri, B. castrorum, B. harrisonii, B. neocoronum, B. sp.


Citation: Biscutum neocoronum Pospichal & Wise 1990
Rank: Species

Distinguishing features: Species of Biscutum? with a relatively broad distal shield and a small central area characterized by a bright outer ring in phase contrast and polarized light. The inner portion of the central area is dark in phase contrast.

Farinacci & Howe catalog pages: B. neocoronum *

Search data:
TagsLITHS: placolith, elliptical, CA: closed,
CSPH: equant, elongated, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 6->10µm;
Data source notes: lith size from OD
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: described from Southern high latitudes and recorded as common in late Paleocene, rare in Early Eocene (Pospichal & Wise 1990)
Last occurrence (top): within CP12 zone (46.29-49.11Ma, top in Lutetian stage). Data source: original description
First occurrence (base): within CP5 zone (58.97-59.54Ma, base in Selandian stage). Data source: original description

Plot of occurrence data:


Pospichal, J. J. & Wise, S. W. (1990c). Paleocene to Middle Eocene calcareous nannofossils of ODP sites 689 and 690, Maud Rise, Weddell Sea. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 613-638. gs V O


Biscutum neocoronum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-11-2020

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