Apr 7, 2022
Big John, world's largest Triceratops, got mauled by a rival dinosaur, fossils suggest
A violent encounter with a rival dinosaur may explain why Big John, the most massive Triceratops skeleton ever found, has a keyhole-shaped opening on its frill, a new study finds. This fight happened more than 66 million years ago, but scientists think they know the assailant's identity: It was likely...