Megalodon tooth (IMAGE) Princeton University Caption A team of Princeton researchers has now discovered clear evidence that Megalodon and some of its ancestors were at the very highest rung of the prehistoric food chain – the highest “trophic level.” Indeed, their trophic signature is so high that they must have eaten other predators and predators-of-predators in complicated food web, say the researchers. Harry Maisch of Florida Gulf Coast University, whose hand is holding this Megalodon tooth, gathered many of the samples used in this analysis and is a co-author on the new paper in Science Advances. Credit Photo by Harry Maisch Usage Restrictions Editorial use only License Original 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.