Nannotax3 - ntax_main - Ramsaya swanseana Nannotax3 - ntax_main - Ramsaya swanseana

Ramsaya swanseana


Classification: ntax_main -> Mesozoic nannofossils -> Mesozoic Holococcoliths -> Rarer genera -> Ramsaya -> Ramsaya swanseana
Sister taxa: R. swanseana


Taxonomy:
Citation: Ramsaya swanseana Risatti 1973
Taxonomic rank: species
Basionym: Ramsaya swanseana * Risatti 1973

Synonyms:

Distinguishing features:
Parent taxon (Ramsaya): Holococcoliths with rim of 12-14 blocks and central-area spanned by a narrow, dark bar.
This taxon: Holococcoliths with rim of 12-14 blocks and central-area spanned by a narrow, dark bar.

Search data:
LITHS: holococcolith, elliptical, CA: ca_disjunct, bar, CROSS-POLARS: rim-unicyclic, R-prominent,
Lith size: 4->6µm;
Data source notes: holotype +/-1µm
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

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


nannotaxlogo400px

Ramsaya swanseana compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-8-2026

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10984 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image

Comments

No comments yet. Be the first!