Zygodiscus sheldoniae

Set number: 1960

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10µm

Santos Basin, Brazil

Final Epithet

Zygodiscus sheldoniae Bown, 2005

Basionym

Zygodiscus sheldoniae Bown, 2005

Remarks

This species has a narrow central area closed by a short diagonal bar. The broad tangential inner wall exhibits first-order white interference colour with dextrogyre inclined extinction lines and length-fast (−) elongation on the distal side. The short diagonal bar displays first-order greyish-white interference colours with length-fast (-) elongation in the plan view.

References

Bown, P. R. 2005d. Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research 27(1): 21-95.