1. Department of Archaeology Ghent University, UFO Ghent Belgium
2. Department of Archaeology University of Leiden Leiden The Netherlands
3. CNRS UMR 5199, CNRS Universite de Bordeaux Pessac Cedex France
4. Center for American Archaeology Kampsville Illinois USA
5. Illinois State Museum Springfield Illinois USA
6. Pacific Marine Mammal Center Laguna Beach California USA
7. Marshall University Huntington West Virginia USA
8. Evolutionary Ecology Group, Department of Biology University of Antwerp Wilrijk Belgium