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Helicosphaera ampliaperta

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Cenozoic Taxa

Helicosphaera ampliaperta

Edited by Jeremy Young on Wed, 09/03/2011 - 18:16

Helicosphaera ampliaperta Bramlette and Wilcoxon, 1967

Description: Similar to H. carteri but central-area open, and wing weaker.

Remarks:The wing can be indistinct making it possible to mistake H. ampliaperta for a placolith coccolith.

Original description:

Helicosphaera ampliaperta 010142.jpgHelicosphaera ampliaperta 010143.jpg

Variant: H. porosa Lehotayova, 1985 - with grill in central-area.

Geological Time Data
Geological Time Periods: 
NN4
NN2
Biblio Reference: 
Young, JR.  1998.  Neogene. Calcareous nannofossil biostratigraphy. :225-265.
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