Sampling Mastodon Bones (IMAGE) American Museum of Natural History Caption Grant Zazula, a paleontologist in the Yukon Palaeontology Program and lead author on the new work, cuts samples of American mastodon bones for radiocarbon dating. Credit © G. Zazula Usage Restrictions Can be used with appropriate credit 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.