Nannotax3 - ntax_mesozoic - Arkhangelskiella maastrichtiensis

Arkhangelskiella maastrichtiensis


Classification: ntax_mesozoic -> Arkhangelskiales -> Arkhangelskiellaceae -> Arkhangelskiella -> Arkhangelskiella maastrichtiensis
Sister taxa: A. cymbiformis, A. maastrichtiensis, A. specillata, A. sp.

Distinguishing features:
Parent taxon (Arkhangelskiella): R-units cover the distal surface, so coccolith appears bright, unicyclic, in LM (although darker towards outer edge); central-area has perforate plate with axial sutures. 4 tiers visible in side view.
This taxon: Large sized (>10µm) with a broad rim (>1.5µm)


Taxonomy:

Citation: Arkhangelskiella maastrichtiensis Burnett, 1997
Rank: Species
Synonyms: Arkhangelskiella cymbiformis var. W of Varol 1989

Farinacci & Howe catalog pages: A. maastrichtiensis * , A. cymbiformis W *

Distinguishing features:
Parent taxon (Arkhangelskiella): R-units cover the distal surface, so coccolith appears bright, unicyclic, in LM (although darker towards outer edge); central-area has perforate plate with axial sutures. 4 tiers visible in side view.
This taxon: Large sized (>10µm) with a broad rim (>1.5µm)

Search data:
TagsLITHS: placolith, elliptical, CA: plate, pores, closed, CROSS-POLARS: rim-unicyclic, R-prominent,
MetricsLith size: 10->20µm;
Data source notes: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: According to Varol 1989 this form only becomes common in the Late Maastrichtian
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Lees & Bown 2005 - consistently present to end Cret
First occurrence (base): within Campanian Stage (72.05-83.64Ma, base in Campanian stage). Data source: Burnett 1997

Plot of occurrence data:

References:

Burnett, J. A. (1997c). New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research. 19(2): 133-146. gs V O

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

Perez-Rodriguez, I., Lees, J. A., Larasoaña, J. C., Arz, J. A. & Arenillas, I. (2012). Planktonic foraminiferal and calcareous nannofossil biostratigraphy and magnetostratigraphy of the uppermost Campanian and Maastrichtian at Zumaia, northern Spain. Cretaceous Research. 37: 100-126. gs

Sissingh, W. (1977). Biostratigraphy of Cretaceous calcareous nannoplankton. Geologie en Mijnbouw. 65(1): 37-65. gs

Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs V O

Varol, O. (1989d). Quantitative analysis of the Arkhangelskiella cymbiformis group and its biostratigraphical usefulness in the North Sea area. Journal of Micropalaeontology. 8: 131-134. gs V O


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Arkhangelskiella maastrichtiensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-11-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10038 Go to Archive.is to create a permanent copy of this page - citation notes



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