South-Western France France
Geological Time: Paleogene Oligocene Chattian
the raw material is provided by
View of a specimen of Operculina sp. ---
The identification is based upon:
Chaproniere, G.C.H., 1984: Oligocene and Miocene larger foraminiferida from Australia and New Zealand Bulletin 188 Bureau of Mineral Resources, Geology and Geophysics, Canberra. Plate 5, Fig.