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The domestication of dogs likely occurred in Eurasia by 16,000 years ago, and the initial peopling of the Americas potentially happened around the same time. Dogs were long thought to have accompanied the first migrations into the Americas, but conclusive evidence for Paleoindian dogs is lacking. In this study, the direct dating of two dogs from the Koster site (Greene County, Illinois) and a newly described dog from the Stilwell II site (Pike County, Illinois) to between 10,190 and 9,630 cal BP represents the earliest confirmed evidence of domestic dogs in the Americas and individual dog burials anywhere in the world. Analysis of these animals shows Early Archaic dogs were medium sized, lived active lifestyles, and exhibited significant morphological variation. Stable isotope analyses suggest diets dominated by terrestrial C3resources and substantial consumption of riverine fish.

Mary W. Helms’s observation that spatial distance often correlates with spiritual power has become an axiom in interpreting the role of exotic materials in societies. This is especially evident in explanations of the North American Hopewell Interaction Sphere. The circulation and accumulation of exotic materials in massive mortuary caches peaked during the Hopewell era (100 B.C. to A.D. 300). The premise that Hopewell smoking pipes were made in Ohio, primarily of local raw material, and circulated to foreign locations was an integral part of this interaction model. In this study we demonstrate, primarily using reflectance near-infrared spectroscopy (NIS), that early Hopewell Tremper Mound pipe raw-material acquisition focused on exotic pipestones from Illinois and Minnesota. By contrast, later Mound City cache pipes were almost exclusively made from local limestone and pipestone. The discovery of this shift in preference for and/or access to different quarry sources by Ohio Hopewell societies provides new perspectives on early Hopewell development and long-distance interaction.

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