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    STUDIA GEOLOGIA - Issue no. 2 / 2012  
         
  Article:   ORIGIN, EVOLUTIONARY CLASSIFICATION, AND BIOSTRATIGRAPHIC SIGNIFICANCE OF THE LATE CRETACEOUS PLANKTIC FORAMINIFERAL DIRECTIONAL LINEAGE BOLLITRUNCANA O.A. KORCHAGIN, 2001.

Authors:  .
 
       
         
  Abstract:   Taxonomic revision of the genus Bollitruncana O.A. Korchagin, 2001 shows that it accommodates adirectional lineage, which consists of two species: B. carpathica (Scheibnerová, 1963) and B. posthelvetica (Hanzliková, 1963). Bollitruncana directional lineage is restricted to Turonian. A new planktic foraminiferalbiozone is recognized in the Turonian, namely the Bollitruncana carpathica Biozone.

Key words: planktic foraminifers, Late Cretaceous, taxonomy, evolution, biostratigraphy.
 
         
     
         
         
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