1. Aix Marseille Université; CNRS; IRD; Coll France; CEREGE; Aix-en-Provence France
2. Palaeoecosystems Group; Department of Earth Sciences; Durham University; Durham DH1 3LE UK
3. Department of Geology; University of Lund; SE 223 62 Lund Sweden
4. Institut de Physique du Globe de Paris; Université Paris7-Denis Diderot; 1 rue Jussieu Paris France
5. UMR5563 Géosciences Environnement Toulouse; Observatoire Midi-Pyrénées; CNRS/UPS/IRD; 14 Avenue Edouard Belin, 31400 Toulouse France
6. Univ. Lille; CNRS; UMR 8198-Evo-Eco-Paleo; F-59000 Lille France