Coccolithus opdykei

Classification: Coccolithophores -> Coccolithales -> Coccolithaceae -> Coccolithus -> C. gigas group -> Coccolithus opdykei
Sister taxa: C. gigas, C. hulliae, C. opdykei, C. mutatus, C. staurion,


Citation: Coccolithus opdykei Bown & Newsam 2017
Rank: Species

Farinacci & Howe catalog pages: C. opdykei *

Morphology remarks: Large (8-12μm) Coccolithus with a narrow central area (Differentiation: Smaller than C. mutatus, C. staurion and C. cf. C. gigas, with broader crossbars than C. mutatus and C. staurion. Similar to Cruciplacolithus opacus Shamrock & Watkins, 2012 but with a broader and brighter tube cycle in XPL. [Bown & Newsam 2017]

Size: Holotype L = 11.1μm (Paratype L = 9.6μm).

Search data:
TagsLITHS: placolith, elliptical, CA: cross-axial, ca_disjunct,
CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 8->12µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP15b subzone (44.12-45.49Ma, top in Lutetian stage). Data source: Bown & Newsam 2017
First occurrence (base): within NP14b subzone (46.29-47.84Ma, base in Lutetian stage). Data source: Bown & Newsam 2017

Plot of occurrence data:


Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O


Coccolithus opdykei compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-9-2020

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