Woolly mammoth tusk (IMAGE) Cell Press Caption This is a photo of a woolly mammoth tusk, from which the authors sequenced the entire genome. The tusk was discovered in northeastern Siberia in 2015 and has been radiocarbon dated to ca 18,000 years before present. Credit Love Dalén Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.