1. AMAP, CNRS, CIRAD, INRA, IRD, Université de Montpellier, Montpellier, France
2. Palaeobiogeology-Palaeobotany-Palaeopalynology, Department of Geology, University of Liège, Liège, Belgium
3. Royal Belgian Institute of Natural Sciences, O.D. Earth and History of Life, Brussels, Belgium