Russellia


Classification: Mesozoic -> Holococcoliths -> Rarer genera -> Russellia
Sister taxa: Bifidalithus, Bilapillus, Multipartis, Munarinus, Octolithus, Okkolithus, Ottavianus, Pharus, Ramsaya, Russellia, Saepiovirgata, Acuturris, Anfractus, Duocameratus, Lacunolithus-Bown, Metadoga, Nicholasia, Paulpearsonia, Petrobrasiella, Pseudoconus, Semihololithus, Stereorhabdus, Tanzanella, Thecatus, unidentified holococcoliths,

Distinguishing features: Holococcoliths with rim of 10-26 blocks and central perforation.


Daughter taxa: (blue => in age window 0-300Ma)


Specimens not identified to species level

Taxonomy:

Citation: Russellia Risatti, 1973
Rank: Genus
Type species: Russellia bukryi Risatti, 1973

Farinacci & Howe catalog pages: Russellia *

Distinguishing features: Holococcoliths with rim of 10-26 blocks and central perforation.

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Maastrichtian Stage (66.04-72.05Ma, base in Maastrichtian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

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


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Russellia compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-12-2018

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11061Go to Archive.is to create a permanent copy of this page - citation notes



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