Campylosphaera differta


Ancestry: Coccolithophores -> Coccolithales -> Coccolithaceae -> Campylosphaera -> Campylosphaera differta
Sister taxa: C. dela, C. differta, C. eodela, C. eroskayi, C. sp.,

Short diagnosis: Medium to large, elliptical to oblong Campylosphaera with a relatively narrow central area filled with broad cross-bars.


Taxonomy:

Citation: Campylosphaera differta Bown, 2010
Rank: Species
Notes & discussion: Distinguished from other Campylosphaera species by the broad cross bars that fill the central area, and the bright inner cycle is reduced.

Farinacci & Howe catalog pages: Campylosphaera differta *

Short diagnosis: Medium to large, elliptical to oblong Campylosphaera with a relatively narrow central area filled with broad cross-bars.

Geological Range:
Last occurrence (top): within NP11 zone (53.70-54.17Ma, top in Ypresian stage). Data source: Self-Trail 2011 (imaged specimen from NP11)
First occurrence (base): within NP9 zone (55.86-57.21Ma, base in Thanetian stage). Data source: Bown, 2010

Plot of occurrence data:

References:

Bown, P.R., (2010). Calcareous nannofossils from the Paleocene/Eocene Thermal Maximum interval of southern Tanzania (TDP Site 14). Journal of Nannoplankton Research, 31: 11-38.

Self-Trail, J., (2011). Paleogene Calcareous Nannofossils of the South Dover Bridge core, Southern Maryland (USA). Journal of Nannoplankton Research, 32(1): 1-28.


Nannotax3 - Coccolithophores - Campylosphaera differta by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-3-2017

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Jean Self-Trail (US)
You list the geologic range of Camplyospheara differta as being from NP9 to NP10. However, one of the images (mine) is from NP11. Therefore, you need to adjust the geologic range of this species.

Thanks!
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Jeremy Young (UCL, UK)
Thanks for pointing that out - curiously though in the paper the only record is from NP10, but I guess it is a very rare species and you found it during imaging but not during the taxon count?
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