Prediscosphaera cretacea


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

Short diagnosis: Typical form, elliptical with diagonal cross but lacking other distinguishing features


Taxonomy:

Citation: Prediscosphaera cretacea (Arkhangelsky, 1912) Gartner, 1968
Rank: Species
Basionym: Coccolithophora cretacea Arkhangelsky, 1912
Variants: Prediscosphaera cretacea ssp. lata Bukry 1969 - broad inner rim cycle
Synonyms:

Farinacci & Howe catalog pages: Coccolithophora cretacea * Deflandrius catinus * Prediscosphaera cretacea cretacea [no catalog entry yet]Prediscosphaera cretacea lata * Prediscosphaera decorata * Rhabdolithus intercisus *

Short diagnosis: Typical form, elliptical with diagonal cross but lacking other distinguishing features


Size: 5-8 µm long

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Maastrichtian stage). Data source: Lees & Bown 2005 - consistently present to end Cret
First occurrence (base): within BC27c subzone (100.07-100.54Ma, base in Albian stage). Data source: Burnett 1998

Plot of occurrence data:

References:

Arkhangelsky, A.D., (1912). Upper Cretaceous deposits of east European Russia. Materialien zur Geologie Russlands, 25: 1-631.

Burnett, J.A., (1998). Upper Cretaceous. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 132-199.

Deflandre, G. & Fert, C., (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie, 40: 115-176.

Gartner, S., (1968). Coccoliths and related calcareous nannofossils from Upper Cretaceous deposits of Texas and Arkansas. The University of Kansas Paleontological Contributions, Article 48 (Protista 1): 1-56.

Shumenko, S.I., (1976). Mesozoic calcareous nannoplankton of the European part of the USSR. Academy of Sciences of the USSR Paleontological Institute Scientific Council on the problem Evolutionary trends and patterns of animal and plant organisms. Nauka.


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Prediscosphaera cretacea compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-12-2017

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Mike Styzen (Noble Energy, US)
What is the smooth surface those bugs are sitting on?

[NB This comment refers to SEM images 88-2.jpg and US027.jpg in the collection at the top of the page - JRY March 2014]
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Jeremy Young (NHM, UK)
It is on a cover slip, which does give a nice smooth surface, though i prefer now to use polycarboane filters as they are better for removing fine debris. NB These Prediscosphaera pages a prototype for the Mesozoic taxa, Jackie is currently building up the species list for these and then we should able to get pages populated quite rapidly.
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