Syndyoceras skeletal display (IMAGE) University of Nebraska-Lincoln Caption The Syndyoceras existed for 4.2 million years during the Cenozoic era on the North American continent. This skeletal display can be found in the University of Nebraska State Museum–Morill Hall in Lincoln, Nebraska. Credit Craig Chandler, University Communication and Marketing, University of Nebraska–Lincoln Usage Restrictions For use with stories about this research publication. 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.