Scientists studying Scotty, the largest known T. rex skeleton, have discovered a network of fossilized blood vessels inside a broken rib. The rib shows signs of healing, and the vessels were preserved during that process.
Using neutron and X-ray imaging, the team examined the 66-million-year-old bone without damaging it. This non-destructive approach revealed the internal structure, including the blood vessel network.
The finding is significant because it provides direct evidence of how dinosaurs healed from injuries and offers a rare glimpse into their soft tissue preservation. The vessels likely formed as part of the healing response.