Discovery Site of Acrotholus audeti (image) Cleveland Museum of Natural History Caption This is the discovery site of Acrotholus audeti in the Milk River Formation of southern Alberta. The pile of rocks marks the exact spot where the most complete specimen was found. Credit Photo credit: Dr. David Evans, ROM Usage Restrictions Publish with photo credit information. 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.