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&quot;<i>Globigerina ciperoensis</i>&quot;, atypically giant planktonic foraminifers from the Oligocene of the Haute-Savoie, France

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" Globigerina ciperoensis ", atypically giant planktonic foraminifers from the Oligocene of the Haute-Savoie, France

UJETZ, Bernhardt, WERNLI, Roland

Abstract

Very rare giant planktonic foraminifers which are here provisionally attributed to "Globigerina ciperoensis" have been discovered in flysch sediments from the Oligocene (Globigerina ampliapertura planktonic foraminiferal P20 zone) of the Haute-Savoie in France. These forms attain a diameter of 650 μm (at least two times larger than "normal"- sized Globigerina ciperoensis specimens) and possess a Turborotalia-like extra-umbilical aperture. The limited number of specimens prevent us from creating a new formal taxon. The composition and diversity of the associated foraminiferal assemblage indicate a low oxygenated, deep marine, middle bathyal environment.

UJETZ, Bernhardt, WERNLI, Roland. " Globigerina ciperoensis ", atypically giant planktonic foraminifers from the Oligocene of the Haute-Savoie, France. Annalen des Naturhistorischen Museums in Wien. Serie A für Mineralogie und Petrographie, Geologie und

Paläontologie, Anthropologie und Prähistorie , 1994, no. 96, p. 199-207

Available at:

http://archive-ouverte.unige.ch/unige:153990

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