Brina Tchibinda Madingou, Aix-en-Provence, CEDEX 4, France, Mireille Perrin, CEREGE, Aix-en-Provence Cedex, France, Arnaldo Hernandez Cardona, National Autonomous University of Mexico, Mexico City, Mexico, Luis Manuel Alva-Valdivia, UNAM, Mexico City, Mexico, Gwenael Herve, University Michel de Montaigne Bordeaux 3, Pessac Cedex, France, Shelby Anne Jones-Cervantes, CSU Fresno, San Diego, CA, United States, Lisa Tauxe, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States, Rafael Cruz Antillon Sr, Instituto Nacional de Anthropologia e Historia, Chihuahua, Mexico and Eric Blinman, New Mexico Department of Cultural Affairs, New Mexico Office of Archaeological Studies, Santa Fe, NM, United States