Earliest Maize Cob (IMAGE) Smithsonian Tropical Research Institute Caption Some of the oldest known corn cobs, husks, stalks and tassels, dating from 6,700 to 3,000 years ago were discovered at Paredones and Huaca Prieta, two mound sites on Peru’s arid northern coast. Credit Tom D. Dillehay Usage Restrictions Credit required License Licensed 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.