Ancient Bison Bones (1 of 2) (image) University of Adelaide Share Print E-Mail Caption These are thirty-thousand-year-old permafrost bison bones from the Yukon region of Canada. Credit The University of Adelaide Usage Restrictions To be used only in conjunction with this story. Written permission is required for other uses. Share Print E-Mail 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.