Coccolithus supremus
Set number: 1721
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Set number: 1732
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In the mobile mount
Set number: 1722
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In the mobile mount
Set number: 1723
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In the mobile mount
Set number: 1731
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In the mobile mount
Coccolithus supremus Bown & Dunkley Jones, 2006
Circular species of Coccolithus exhibit a closed central area surrounded by a non-protruding tube cycle. The proximal shield is much narrower and thinner than the distal shield. Extinction lines on the tube cycle are laevogyre (left-handed) distally and dextrogyre (right-handed) proximally. The extinction angle is about 85° on the tube cycle but about 74° on the proximal shields on the distal side. Coccolithus supremus differs from Coccolithus gracejacovidesiae in having a closed central area, whereas the latter has an open central area.
Bown, P. R. & Dunkley Jones, T. 2006. New Paleogene calcareous nannofossil taxa from coastal Tanzania: Tanzania Drilling Project Sites 11 to 14. Journal of Nannoplankton Research 28(1): 17-34.
Varol, O. 2025a. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication. 29: 1-222
Holotype
Bomolithus supremus
Bown & Dunkley Jones, 2006
Late Paleocene
TDP Site 14, Pande, Tanzania