Modern Carcharhinus Shark (IMAGE) Smithsonian Tropical Research Institute Caption Modern Carcharhinus shark is similar to the fossil shark found in the early Miocene flooding. Credit Gaby Carías Tucker and Alberto Blanco Dávila Usage Restrictions Gaby Carías Tucker and Alberto Blanco Dávila 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.