Biscutum dekaenelii


Classification: ntax_mesozoic -> Podorhabdales -> Biscutaceae -> Biscutum -> Biscutum dekaenelii
Sister taxa: B. constans, B. ellipticum ⟩⟨ B. coronum, B. dekaenelii, B. magnum, B. melaniae ⟩⟨ B. arrogans, B. asymmetricum, B. boletum, B. dissimilis, B. zulloii ⟩⟨ B. hattneri, B. notaculum, B. virginica ⟩⟨ B. gaultensis, B. thurowii ⟩⟨ B. davyi, B. depravatum, B. dorsetensis, B. dubium, B. erismatum, B. grande, B. intermedium, B. planum, B. profundum, B. sp.

Distinguishing features: Medium (4-6 µm), Central area spanned by a granular cross with hollow central knob


Taxonomy:

Citation: Biscutum dekaenelii Covington, 1994
Rank: Species

Farinacci & Howe catalog pages: B. dekaenelii *

Distinguishing features: Medium (4-6 µm), Central area spanned by a granular cross with hollow central knob

Search data:
TagsLITHS: placolith, elliptical, CA: cross-axial, ca_disjunct, process, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 4->6µm;
Data source notes: holotype +/- 1µm & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

See also: Boletuvelum candens - form with similar base but large spine ending in domal cover and possibly co-occuring on same coccosphere;

Geological Range:
Last occurrence (top): within Santonian Stage (83.64-86.26Ma, top in Santonian stage). Data source: Burnett 1998
First occurrence (base): within Coniacian Stage (86.26-89.77Ma, base in Coniacian stage). Data source: Burnett 1998

Plot of occurrence data:

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O

Covington, M. (1994). New taxa from the Niobrara Formation (Upper Cretaceous) of Kansas, USA. Journal of Nannoplankton Research. 16(3): 121-131. gs V O


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Biscutum dekaenelii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-1-2021

Taxon Search:
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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10074 Go to Archive.is to create a permanent copy of this page - citation notes



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