rex’s teeth were fearsome. Arguably the majestic carnivore’s most valuable weapon. But 66 million years after the king of dinosaurs exited the Mesozoic scene, its fossilized, banana-size flesh rippers are finding a new purpose.
But 66 million years after the king of dinosaurs exited the Mesozoic scene, its fossilized, banana-size flesh rippers are finding a new purpose. rex teeth—along with gnashers from other dinosaur species—are yielding chemical clues that can help researchers reconstruct Earth’s ancient climate. Nautilus Members enjoy an ad-free experience.
Nautilus Members enjoy an ad-free experience. Log in or Join now . Scientists in Germany have divulged the atmospheric secrets locked within fossil dino teeth by analyzing oxygen isotopes in ancient dental enamel.