Ancient Fossil Reveals Mammal-Dinosaur Battle

A fossil discovered in China's Liaoning Province shows a mammal, Repenomamus robustus, attacking a Psittacosaurus dinosaur, challenging the notion that dinosaurs ruled the land. The mammal's predatory behavior is a first-of-its-kind evidence of a mammal preying on a dinosaur. The intertwined skeletons and completeness of the fossils suggest the find is legitimate, and experts believe the attack was preserved when the animals were caught in a volcanic flow. This discovery overturns the traditional understanding of dinosaur dominance.