Nannotax3 - ntax_main - Russellia laswellii Nannotax3 - ntax_main - Russellia laswellii

Russellia laswellii


Classification: ntax_main -> Mesozoic nannofossils -> Mesozoic Holococcoliths -> Rarer genera -> Russellia -> Russellia laswellii
Sister taxa: R. bukryi, R. laswellii, R. sp.


Taxonomy:
Citation: Russellia laswellii (Risatti 1973) Risatti 1973
Taxonomic rank: species

Synonyms:

Distinguishing features:
Parent taxon (Russellia): Holococcoliths with rim of 10-26 blocks and a small central block.
This taxon: small sized (3-5 µm)

Search data:
LITHS: holococcolith, elliptical, CA: ca_disjunct, CROSS-POLARS: rim-unicyclic, R-prominent,
Lith size: 3->5µm;
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:
Last occurrence (top): within Maastrichtian Stage (66.04-72.17Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Maastrichtian Stage (66.04-72.17Ma, base in Maastrichtian 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 O

Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs O

Risatti, J. B. (1973). Nannoplankton biostratigraphy of the Upper Bluffport Marl-Lower Prairie Bluff Chalk interval (upper Cretaceous) in Mississippi. In, Smith, L. A. & Hardenbol, J. (eds) Proceedings of the Symposium on Calcareous Nannofossils. Gulf Coast Section SEPM Publication, 8-57. gs O


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Russellia laswellii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 12-8-2026

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11063 Go to Archive.is to create a permanent copy of this page - citation notes



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