unfluted spear points. The complex also includes bifacially worked knives and unifacially retouched lithic flakes lacking microblades that generally resemble similar lithics found in sites of the Kamchatka Peninsula in Russia, possibly due to migration and cultural exchange over the Bering land bridge. Denali Complex The Denali Complex denotes a more recent part of the Paleo-Arctic Tradition dated to 10,000 BP. Although it is found in similar sites to the Nenana Complex such as the Dry Creek archaeological site, it is distinguished stratigraphically and through the presence of microblades, wedge-shaped lithic cores, and burins. See also Paleo-Indians Archaeology of the Americas List of archaeological periods (North America) Upward Sun River site References Fagan, Brian M. Ancient North America. London: Thames & Hudson Ltd., 2005. Paleo-Arctic Tradition Archaic period in North America Archaeology of the United States Archaeology of Canada Native American history of Alaska Prehistory of the Arctic Pre-Columbian cultures Stone Age