Modern Tiger shark (© Michael Vogelsang / www.seapicture.de) (IMAGE) University of Vienna Caption A team of researchers led by Julia Tuertscher from the University of Vienna examined the fossil record of these apex predators and found out that modern tiger sharks are older than previously thought. The results of this study are published in the journal "Paleobiology". Credit © Michael Vogelsang / www.seapicture.de Usage Restrictions None 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.