Wolf skull (IMAGE) The Francis Crick Institute Caption A 32,000 year-old wolf skull from Yakutia from which a 12-fold coverage genome was sequenced as part of the study. Credit Love Dalén Usage Restrictions Use with credit 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.