1. Prehistory Research Project, Department of Anthropology, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
2. Division of Earth and Ecosystem Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89503, USA.
3. Department of Geological Sciences and Engineering, University of Nevada, Reno, 1664 North Virginia Street, Reno, NV 89557, USA.
4. School of Geography and Earth Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
5. SWCA Environmental Consultants Inc., 200 West 22nd Street #220, Lombard, IL 60148, USA.
6. Independent Scholar, 2901 FM 1496, Dublin, TX 76446, USA.
7. Texas Archaeological Research Laboratory, The University of Texas at Austin, 1 University Station, R7500, Austin, TX 78712, USA.