A recent excavation update from the Burke Museum revealed something incredible hidden inside a hadrosaur skeleton: ossified tendons — tendons that gradually mineralized and hardened into bone-like structures over the dinosaur’s lifetime. These aren’t random fossil fragments. They’re part of a highly organized biological support system that helped stabilize massive dinosaur tails over 66–75 million years ago. Hadrosaurs (“duck-billed dinosaurs”) are especially famous for these structures. In many species, paleontologists find long rod-like tendons arranged in a crisscross lattice along the tail and back. This pattern likely acted like an internal engineering framework — similar to reinforced steel bars (“rebar”) inside concrete. Why does this matter? 🦖 It changes how we think dinosaurs moved. For decades, scientists debated whether dinosaur tails dragged on the ground. Fossils like these show many hadrosaur tails were actually stiffened and elevated, helping with balance and loco...