FIG. 3 in Presence of the foraminifer Chapmanina gassinensis Silvestri, 1931, in the Eocene (Lutetian) of the Grignon "falunière" (Yvelines, Paris Basin). The genus Chapmanina, its species and world distribution

FIG. 3. — Distribution of Chapmanina gassinensis Silvestri, 1931 in the Eocene of Europe and North Africa. The numbers correspond to the references indicated in the Appendix 1.