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Umbellosphaera irregularis

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Cenozoic Taxa

Umbellosphaera irregularis

Edited by Lyndsey on Thu, 10/03/2011 - 14:45

Umbellosphaera irregularis Paasche in Markali and Paasche, 1955

Description: Coccoliths concave outwards, without ridges on the distal surface.

Umb_irreg_217-12a.JPGUmb_irreg_116-78.JPGUmb_irreg_139-41.JPG

Remarks: The conave outward shape of the coccliths gives the coccospheres a very irregular appearace in LM, hence the species name.

Original description:

Umbellosphaera irregularis 120425.jpgUmbellosphaera irregularis 120426.jpg

Geological Time Data
Geological Time Periods: 
NN15
NN21
Biblio Reference: 
Young, JR.  1998.  Neogene. Calcareous nannofossil biostratigraphy. :225-265.
Notes on occurrence information: 
Questions occur about the beginning of this species' range.
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