The Morrison Formation in Wyoming (IMAGE) Southern Methodist University Caption SMU paleontologists Timothy S. Myers and Chris Strganac sample ancient Jurassic soils in northern Wyoming's Morrison Formation. Click here to read more. Credit (Credit: Yosuke Nishida) Usage Restrictions Please 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.