Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Holococcoliths with rim of 12-14 blocks and central-area spanned by a narrow, dark bar.
Daughter taxa (time control age-window is: 0-800Ma) | ||||
Ramsaya swanseana Holococcoliths with rim of 12-14 blocks and central-area spanned by a narrow, dark bar. |
Taxonomy:
Farinacci & Howe catalog pages: Ramsaya *
Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Holococcoliths with rim of 12-14 blocks and central-area spanned by a narrow, dark bar.
Search data:
LITHS: holococcolith, elliptical, CA: bar, ca_disjunct, CROSS-POLARS: R-prominent, rim-unicyclic, |
Lith size: 4->6µm; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Maastrichtian Stage (66.04-72.17Ma, base in Maastrichtian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
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 OReferences:
Ramsaya compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-10-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10983 Go to Archive.is to create a permanent copy of this page - citation notes |
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