Prying up a Slab (IMAGE) Field Museum Caption Researchers in the field at Fossil Lake, Wyoming, prying up a slab of rock containing fossils. Credit (c) Lance Grande, Field Museum Usage Restrictions Please include 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.