A Fossil Shark Tooth in Early Contexts of Cerro Casa de Piedra 7, Southwest Patagonia, Argentina. In Southbound – Late Pleistocene Peopling of Latin America. MIOTTI, L. & SALEMME, M. & FLEGENHEIMER, N. & GOEBEL, T. (Eds.), Center for the Study of the First Americans, Texas, ISSN 8755–898X: 165–176