Calcidiscus pataecus

Classification: Coccolithophores -> Coccolithales -> Calcidiscaceae -> Calcidiscus -> C. leptoporus group -> Calcidiscus pataecus
Sister taxa: C. gallagheri, C. leptoporus, C. macintyrei, C. pataecus, C. premacintyrei, C. salomonii, C. tropicus,

Short diagnosis: Small to medium (~3-8µm), elliptical Calcidiscus coccoliths with a closed central area.


Citation: Calcidiscus pataecus (Gartner, 1967) de Kaenel & Villa 1996
Rank: Species
Basionym: Coccolithus pataecus Gartner, 1967
Synonyms: Calcidiscus radiatus (Kamptner, 1954) Martin-Perez & Aguado, 1990 - the type specimen of Coccolithus radiatus Kamptner 1954 is undentifiable but Martin-Perez and Agaudo 1990 proposed that it was a senior synonym of C. pataecus Gartner 1967 and the name has been used in this sense by some authors.

Farinacci & Howe catalog pages: Coccolithus fuscus * Coccolithus pataecus * Coccolithus radiatus *

Short diagnosis: Small to medium (~3-8µm), elliptical Calcidiscus coccoliths with a closed central area.

Search data:
TagsLITHS: placolith, elliptical, CA: Placoliths: closed,
CSPH: spherical, monomorphic, V-UNITS: distal shield, tube, R-UNITS: prox shield, DETAILS: isogyres oblique, rim-unicyclic,
MetricsLith size: 3->8µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Larger specimens (>5µm) appear in Zone NP25. Only consistently present in the Expedition 320 samples with the best Oligocene preservation suggesting it is susceptible to dissolution (Bown & Dunkley Jones, 2012).
Last occurrence (top): within NN11 zone (5.59-8.29Ma, top in Messinian stage). Data source: Young approx range
First occurrence (base): within NP23 zone (29.62-32.02Ma, base in Rupelian stage). Data source: Bown & Dunkley Jones, 2012

Plot of occurrence data:


Bown, P.R. & Dunkley Jones, T., (2012). Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research, 32(2): 3-51.

de Kaenel, E. & Villa, G., (1996). Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program. Scientific Results, 149: 79-145.

Gartner, S., (1967). Calcareous nannofossils from Neogene of Trinidad, Jamaica, and Gulf of Mexico. Paleontological Contributions. University of Kansas, 29: 1-7.

Martin-Perez & Aguado 1990 [sorry, not in our bibliography yet]


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

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Comments (1)

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Ines Galovic (CGS, Croatia)
The Zone NN6 is given by our publication (Galovi_ & Young, 2012). Bown & Dunkley Jones, 2012 couldn't give this data because thay were investigated mostly Paleogene sediments, not middle Miocene. In their article the source of this zone is missing.
Jeremy Young (UCL, UK)
Intersting point, but the range in our paper would have applied to the paratethys only. I have seen the morphotype much higher in the Miocene, so will emend the range.
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