Shawn Collins (Sandstone Archaeology, LLC), Deborah M. Pearsall (University of Missouri), and John G. Jones (Washington State University). Collapsing Assumptions: Climate and Agriculture in Prehispanic Coastal Guatemala. (Oral presentation). [Abstract]

J. Kevin Hanselka. (Washington University in St. Louis). Casual Cultivation among Contemporary Small Scale Farmers in Southwestern Tamaulipas, Mexico, and Implications for Prehistoric Low-level Food Production. (Oral presentation). [Abstract]