Oman Coral Fossil (image) Hokkaido University Share Print E-Mail Caption This is a 4,100-year-old Oman coral fossil. Credit Hokkaido University Usage Restrictions This image is copyrighted and can be used for reporting this research work without obtaining a permission if credited properly. 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.