Ghost Ranch Fossil Quarry (IMAGE) University of Utah Caption Crews excavating vertebrate fossils from the Hayden Quarry at Ghost Ranch, NM. These rocks contain abundant fossils of pollen, charcoal, fish, and reptiles, all of which were used to reconstruct the ecosystem and environment of this area 212 million years ago. Credit Randall Irmis Usage Restrictions Credit Randall Irmis 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.