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Calciosolenia fossilis (Deflandre in Deflandre & Fert, 1954) Bown in Kennedy et al., 2000

Edited by Lyndsey on Fri, 11/03/2011 - 16:55

Calciosolenia fossilis (Deflandre in Deflandre & Fert, 1954) Bown in Kennedy et al., 2000

Description: Elongate, narrow scapholiths. Morphologically comparable with the extant Calciosolenia brasiliensis (Lohmann 1919), but fossil specimens have tended to be classified as Calciosolenia (or Scapholithus) fossilis.

Remarks: The extant species show considerable varimorphism across their coccospheres and there is evidence of similar variability in the fossil forms, when found as collapsed coccospheres.


Geological Time Data
Geological Time Periods: 
Holocene
Hauterivian
Biblio Reference: 
Varol, O.  1998.  Palaeogene. Calcareous nannofossil biostratigraphy. :200-224.
Notes on occurrence information: 

The beginning of this species' range is, more precisely, Lower Cretaceous (Lower Hautervian).

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