Uncovering a Fossilized Vascular Network
Researchers have discovered a fossilized network of blood vessels within a rib of Scotty, the Tyrannosaurus rex, which developed as the bone healed from a fracture sustained shortly before the dinosaur’s death. Utilizing advanced neutron and X-ray imaging techniques, scientists generated detailed 3D reconstructions of the rib’s internal structure without damaging the precious fossil. This breakthrough was announced on September 24 at 13:03.
Scotty represents the largest known T. rex skeleton, dating back approximately 66 million years. The rib in question shows evidence of a partially healed fracture that had not fully mended by the time Scotty died. The research team, comprising experts from the University of Regina in Canada and the Oak Ridge National Laboratory in the United States, applied neutron and X-ray imaging to reveal these intricate fossilized vascular details.
Innovative Imaging Techniques and Their Impact
The study produced high-resolution 3D images of the fossil’s internal features. After Scotty’s death, its remains settled in a salty, swampy environment that slowed tissue decomposition. Initial signs of fossilized soft tissues within the rib were first detected in 2020 via micro-computed tomography. Further investigations were conducted in April 2026 using the MARS and VENUS imaging systems at Oak Ridge National Laboratory.
Neutron imaging, highly sensitive to hydrogen, is particularly effective at identifying remnants of soft tissues, while X-ray methods excel at visualizing dense structures like bone. The research team plans to continue analyzing the data and extend their study to other fossils to compare patterns of injury and healing across different species.
This discovery holds significant implications for paleontology, offering fresh insights into the healing processes of dinosaurs and potentially other prehistoric creatures. Examining fossilized soft tissues and blood vessels opens new avenues for understanding the physiology, living conditions, and adaptive strategies of ancient animals. Continued research could reveal previously unknown aspects of dinosaur health and survival in their ancient environments, providing a deeper connection to life millions of years ago.
This remarkable discovery adds to the growing body of evidence surrounding the life and environment of the Tyrannosaurus rex. In a related finding, researchers recently uncovered rare footprints from a 66-million-year-old T. rex in North Dakota, highlighting the diverse and fascinating aspects of this iconic dinosaur's existence.