Nannotax

Coronocyclus nitescens

Wed, 07/01/2009 - 22:25

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Description

  • coronocyclus_nitescens.jpg
    Citation: 
    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:

    Range: Palaeogene to NN6.

    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.

Images

  • coronocyclus_nitescens.jpg
  • Coronocyclus nitescens
  • Coronocylus nitescens - side view
  • 5-14nitescens_elliptical.JPG
  • 5-13nitescens.JPG
  • 5-12nitescens.JPG
Scratchpads developed and conceived by: Vince Smith, Simon Rycroft & Dave Roberts
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