Ghosts of the Ice Age (IMAGE) Yale University Caption Ice Age mammals such as the Columbian mammoth (left), long-horned bison, and sabertooth can help provide insights for the future of today's ecosystems. Credit Illustration by Matt Davis/Yale University 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.