Tankersley (IMAGE) University of Cincinnati Caption University of Cincinnati anthropology professor Kenneth Tankersley poses in front of a table of ancient stone tools in his office. Tankersley has studied ancient cultures across North America. Photo/Michael Miller Credit Michael Miller Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.