Calcidiscus pataecus


Ancestry: 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.


Taxonomy:

Citation: Calcidiscus pataecus (Gartner, 1967) de Kaenel & Villa 1996
Rank: Species
Basionym: Coccolithus pataecus Gartner, 1967
Variants:
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.

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:

References:

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, J.A. & Aguado, R., (1990). Calcareous nannoplankton from the marine sediments of the lower and middle Miocene in the Lecrin Valley (Internal Zones of the Betic Cordillera). Rev. Soc. Geol. Espana, 3(3-4): 335-344.


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Calcidiscus pataecus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-8-2017

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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.
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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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