Distinguishing features:
Parent taxon (P. spinosa group): Elliptical Prediscophaera species with an axial cross
This taxon: Additional bars form a diamond-shpaed structure around centre of cross
Taxonomy:
Farinacci & Howe catalog pages: D. rhombicus *
Distinguishing features:
Parent taxon (P. spinosa group): Elliptical Prediscophaera species with an axial cross
This taxon: Additional bars form a diamond-shpaed structure around centre of cross
Search data:
LITHS: placolith, elliptical, CA: concentric-ring(s), cross-axial, ca_disjunct, process, CROSS-POLARS: rim-bicyclic, V-prominent, |
Lith size: 5.5->7.5µm; Segments: 16->16; Data source notes: holotype +/- 1 µm |
Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.17Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within Campanian Stage (72.17-83.65Ma, base in Campanian stage). Data source: Burnett 1998
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 Perch-Nielsen, K. (1968). Der Feinbau und die Klassifikation der Coccolithen aus dem Maastrichtien von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 16: 1-96. gs Reinhardt, P. (1970). Synopsis der Gauttungen und Arten der mesozoischen Coccolithen und anderer kalkiger Nannofossilien. I. Freiberger Forschungshefte. C260: 5-32. gsReferences:
Prediscosphaera rhombica compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-10-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10940 Go to Archive.is to create a permanent copy of this page - citation notes |
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