A broken rib from Scotty, the largest known T. Rex skeleton, contains an extraordinary fossilized network of blood vessels formed while the dinosaur was healing. Scientists used neutron and X-ray imaging to look inside the 66-million-year-old bone without damaging it, revealing details rarely preserved in fossils.
A broken rib from the world’s largest T. rex hid a 66-million-year-old secret. Rex hid a 66-million-year-old secret Date: September 23, 2026. Rex rib has preserved a stunning 66-million-year-old record of blood vessels and healing hidden inside the fossil.
Of Energy A fractured rib from Scotty, the largest Tyrannosaurus rex skeleton ever discovered, is giving researchers a rare look at dinosaur biology from 66 million years ago. Preserved inside the bone is something almost never found in the fossil record: evidence of an injury that was still healing when the animal died. Scientists used neutron imaging at the Department of Energy’s (DOE) Oak Ridge National Laboratory (ORNL) to examine the fossil from the inside.
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