First radiation of Cretaceous planktonic foraminifera with radially elongate chambers at Angles (southeastern France) and biostratigraphic implications

The study of planktonic foraminifera from the Lower Cretaceous succession at Angles (Southeastern France) directly correlated with ammonites, confirms that the origin of morphotypes with radially elongated chambers occur earlier than previously recorded. In particular, the species Hedbergella semiel...

Full description

Bibliographic Details
Published in:Revue de Micropaléontologie
Main Authors: R. COCCIONI, A. MARSILI, I. PREMOLI SILVA, VERGA, DAVIDE
Other Authors: R. Coccioni, A. Marsili, D. Verga
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2007
Subjects:
Biostratigraphic scheme
Lower Cretaceou
Planktonic foraminifera
Southeastern France
Settore GEO/01 - Paleontologia e Paleoecologia
Online Access:http://hdl.handle.net/2434/41556
https://doi.org/10.1016/j.revmic.2007.06.005
Description
Summary:The study of planktonic foraminifera from the Lower Cretaceous succession at Angles (Southeastern France) directly correlated with ammonites, confirms that the origin of morphotypes with radially elongated chambers occur earlier than previously recorded. In particular, the species Hedbergella semielongata and Hedbergella roblesae bearing subclavate to clavate chambers first appear in the upper Hauterivian, just predating the onset of the oceanic anoxic Faraoni event. Based on these observations, a new zonation is proposed.

Similar Items