Ancient Fossil Unveils Mammal's Bold Attack on Dinosaur

A fossil discovered in northeast China reveals an herbivorous dinosaur, Psittacosaurus, being attacked by a mammal, Repenomamus, challenging the traditional view of dinosaurs as dominant and mammals as submissive. The fossil, preserved in remarkable detail due to an ancient volcanic eruption, shows the mammal biting into the dinosaur's ribcage, suggesting an active attack. While some scientists believe the dinosaur may have already been weakened or recently deceased, the fossil provides evidence of a more complex and rich Cretaceous food web, with smaller mammals occasionally preying on dinosaurs.