Ancient Tyrannosaur's Last Meal: Baby Dinosaurs

The well-preserved stomach of a 75 million-year-old Gorgosaurus libratus, a type of tyrannosaur, revealed the remains of baby bird-like dinosaurs, suggesting that the species' diet changed as they grew. The discovery, the first of its kind, provides insight into the feeding behavior of juvenile and adult tyrannosaurs, showing that juveniles were better suited to eat small prey while adults could consume much larger prey.