Irregular sea urchins in in bioclastic grain-supported carbonate of Burdigalian (Miocene) of the Côte Bleue near Martigues at la Couronne lighthouse, Bouches-du-Rhône, France. Picture by Baptiste Suchéras-Marx and Anne-Sabine Grosjean.
Irregular sea urchins in in bioclastic grain-supported carbonate of Burdigalian (Miocene) of the Côte Bleue near Martigues at la Couronne lighthouse, Bouches-du-Rhône, France. Picture by Baptiste Suchéras-Marx and Anne-Sabine Grosjean.