Columbian Mammoth (IMAGE) University of Nebraska-Lincoln Caption This is a statue of the Columbian mammoth housed at the University of Nebraska-Lincoln. A new study has found that such massive mammals were far more likely than their smaller counterparts to go extinct in regions occupied by ancient humans. Credit Craig Chandler, University of Nebraska-Lincoln Usage Restrictions None 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.