1. UMR 8068 Temps, CNRS, F-92023 Nanterre, France.
2. Department of Linguistic and Cultural Evolution, MPI-EVA, D-04103 Leipzig, Germany.
3. Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, F-75005 Paris, France.
4. Université de Brest, UMR6538 Géosciences Océan, Institut Universitaire Européen de la Mer, CNRS, F-29280 Plouzané, France.
5. Vanuatu National Museum, Vanuatu Cultural Centre, P.O. Box 184, Port-Vila, Vanuatu.
6. Department of Archaeology and Natural History, College of Asia and the Pacific, The Australian National University, Canberra, ACT 2601, Australia.