Paris Basin France
Geological Time: Paleogene Eocene Ypresian
Cuisian
The identification is based upon:
Schaub, Hans, 1981: Nummulites et Assilines de la Tethys paleogene: Taxonomie, phylogenese et biostratigraphie Schweiz. Paläontol. Abh. 104–106 333 pp. Plate 35431, Fig.