Pontosphaera alta Roth, 1970

Pontosphaera alta Roth, 1970

Description: Pontosphaera with an elevated, birefringent rim and a thin, low birefringence plate with a large number of small perforations.

Remarks:

Geological Time Data
Geological Time Periods: 
Biblio Reference: 
Varol, O.  1998.  Palaeogene. Calcareous nannofossil biostratigraphy. :200-224.
Scratchpads developed and conceived by: Vince Smith, Simon Rycroft, Dave Roberts, Ben Scott...