1. Archaeobiology Program, Department of Anthropology, Smithsonian National Museum of Natural History, Post Office Box 37012, Washington, DC 20013–7012, USA.
2. Department of Archaeology, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada.
3. Smithsonian Tropical Research Institute, Apartado Postal 0843–03092, Balboa, Republic of Panama.
4. Department of Anthropology, 107 Swallow Hall, University of Missouri, Columbia, MO 65211, USA.
5. Center for American and World Cultures, 105 MacMillan Hall, Miami University, Oxford, OH 45056, USA.