Home

Cryptococcolithus mediaperforate

Edited by Jeremy Young on Wed, 09/03/2011 - 16:52

Cryptococcolithus mediaperforate (Varol, 1991) de Kaenel and Villa, 1996 [Birkelundia]

Description: Elliptical, medium sized placolith. Central-area with coarse grill clearly visible in LM (non-birefringent but easily seen in phase contrast). Proximal shield is birefringent but thin, and often detached, so coccolith is characteristically dark in XPL.

Remarks: Rare and easily overlooked but a distinctive species.

4-23mediaperforatus.JPG 4-24mediaperforatus.JPG 4-25mediaperforatus.JPG

Synonym: Cryptococcolithus takayamae Gartner, 1992.

Geological Time Data
Geological Time Periods: 
NN11
NN3
Biblio Reference: 
Young, JR.  1998.  Neogene. Calcareous nannofossil biostratigraphy. :225-265.
Scratchpads developed and conceived by: Vince Smith, Simon Rycroft, Dave Roberts, Ben Scott...