1. Department of Anthropology, Department of Geology, University of Cincinnati, Cincinnati, OH, USA
2. Department of Geology, University of Cincinnati, Cincinnati, OH, USA
3. Department of Biological Sciences, University of Cincinnati, Cincinnati, OH, USA
4. Department of Geography and GIS, University of Cincinnati, Cincinnati, OH, USA
5. Department of Plant and Microbial Biology and the BioTechnology Institute, University of Minnesota, St Paul, MN, USA
6. Department of Archaeology, Universidad de San Carlos de Guatemala, Ciudad Universitaria, Ciudad, Guatemala
7. Department of Anthropology, University of Calgary, Calgary, Canada