Nannotax3 - ntax_main - Prediscosphaera microrhabdulina Nannotax3 - ntax_main - Prediscosphaera microrhabdulina

Prediscosphaera microrhabdulina


Classification: ntax_main -> Mesozoic nannofossils -> Podorhabdales -> Prediscosphaeraceae -> Prediscosphaera -> P. cretacea group -> Prediscosphaera microrhabdulina
Sister taxa: P. cretacea, P. desiderograndis, P. grandis, P. majungae, P. microrhabdulina, P. serrata

Taxonomy:

Citation: Prediscosphaera microrhabdulina Perch-Nielsen, 1973
Taxonomic rank: species

Distinguishing features:
Parent taxon (P. cretacea group): Elliptical Prediscophaera species with a diagonal cross
This taxon: Base like P. cretacea but spine very tall and thin; easy to recognise in side view

Farinacci & Howe catalog pages: P. microrhabdulina *

Search data:
LITHS: placolith, elliptical, CA: ca_disjunct, process, diagonal cross, CROSS-POLARS: rim-bicyclic, V-prominent,
Lith size: 4->8µm; Segments: 16->16;
Data source notes: guesstimate (base width)
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
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): near base of UC12 zone (10% up, 85.2Ma, in Santonian stage). Data source: Burnett 1998, fig 6.4

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

Perch-Nielsen, K. & Pomerol, C. (1973). Nannoplancton calcaire a la limite Cretace-Tertiaire dans le Bassin de Majunga (Madagascar). Comptes rendus hebdomaire de l'Académie des sciences, Paris. 276(17): 2435-2439. gs

Perch-Nielsen, K. (1973). Neue Coccolithen aus dem Maastrichtien von Danemark, Madagaskar und Agypten. Bulletin of the Geological Society of Denmark. 22: 306-333. gs

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


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Prediscosphaera microrhabdulina compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-5-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10938 Go to Archive.is to create a permanent copy of this page - citation notes



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