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Coronocyclus nitescens

Edited by Jeremy Young on Wed, 09/03/2011 - 15:31

Coronocyclus nitescens (Kamptner, 1963) Bramlette and Wilcoxon, 1967 [Umbilicosphaera]

Description: Ring-shaped coccoliths with open central-area. No clear shield development, spines on distal side. Strongly birefringent.

Remarks:

Original description:

Cat060395 copy.jpgCat060396 copy.jpg

5-13nitescens.JPG 5-12nitescens.JPG 5-11nitescens.JPG 5-14nitescens_elliptical.JPG 5-15nitescens_elliptical.JPG
Coronocyclus nitescens Coronocylus nitescens - side view      
Cornit267-27NN2.JPG Cornit267-24NN2.JPG Cornit265-15NN5.JPG Cornit265-25NN5.JPG Cornit267-16NN2.JPG

 

 

Synonyms:

  • Coronocyclus serratus Hay, Mohler and Wade, 1966

Variant: Elliptical forms, with narrow rims, occur in NN5-6.

Geological Time Data
Geological Time Periods: 
NN6
Paleogene
Biblio Reference: 
Young, JR.  1998.  Neogene. Calcareous nannofossil biostratigraphy. :225-265.
Scratchpads developed and conceived by: Vince Smith, Simon Rycroft, Dave Roberts, Ben Scott...