Nannotax3 - ntax_main - Prediscosphaera grandis Nannotax3 - ntax_main - Prediscosphaera grandis

Prediscosphaera grandis


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


Taxonomy:
Citation: Prediscosphaera grandis Perch-Nielsen 1979
Taxonomic rank: species
Basionym: Prediscosphaera grandis * Perch-Nielsen 1979

Synonyms:

Distinguishing features:
Parent taxon (P. cretacea group): Elliptical Prediscophaera species with a diagonal cross
This taxon: Large to very large (10-19µm); diagonal cross

Search data:
LITHS: placolith, elliptical, CA: ca_disjunct, process, diagonal cross, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Lith size: 10->19µm; Segments: 16->16;
Data source notes: original description & Blair & Watkins (2009 p.381)
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: FO in N Europe in top Coniacian, possibly extends to Turonian elswhere (Burnett 1998)
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): in lower part of UC11c subzone (40% up, 85.6Ma, in Santonian stage). Data source: Burnett 1998, fig 6.4

Plot of occurrence data:

References:

Blair, S. A. & Watkins, D. K. (2009). High-resolution calcareous nannofossil biostratigraphy for the Coniacian/Santonian Stage boundary, Western Interior Basin. Cretaceous Research. 30(2): 367-384. gs

Bralower, T. J. & Siesser, W. G. (1992). Cretaceous calcareous nannofossil biostratigraphy of Sites 761, 762, and 763, Exmouth and Wombat Plateaus, northwest Australia. Proceedings of the Ocean Drilling Program, Scientific Results. 122: 529-556. gs

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. & Bown, P. R. (2005). Upper Cretaceous calcareous nannofossil biostratigraphy, ODP Leg 198 (Shatsky Rise, Northwest Pacific Ocean). Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-60. gs

Perch-Nielsen, K. (1979d). Calcareous nannofossils from the Cretaceous between the North Sea and the Mediterranean. In, Weidmann, J. (ed.) Aspekte der Kreide Europas. International Union of Geological Sciences Series A . 6: 223-272. gs O

Pospichal, J. J. & Bralower, T. J. (1992). Calcareous Nannofossils Across the Cretaceous/Tertiary Boundary, Site 761, Northwest Australian Margin. Proceedings of the Ocean Drilling Program, Scientific Results. 122: 735-752. 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 grandis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-10-2026

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10934 Go to Archive.is to create a permanent copy of this page - citation notes



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