CT scan image of a fossil of Tyrannosaurus in the Fukui Prefectural Dinosaur Museum. The orange part is the tube through which blood vessels and nerves pass (provided by Associate Professor Soichiro Kawabe)

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CT scan image of a fossil of Tyrannosaurus in the Fukui Prefectural Dinosaur Museum. The orange part is the tube through which blood vessels and nerves pass (provided by Associate Professor Soichiro Kawabe)

The lower jaw of the carnivorous dinosaur Tyrannosaurus, which flourished in the late Cretaceous, has concentrated nerves and may have played the role of a tactile sensor, the Fukui Prefectural Institute of Dinosaurs announced in an international journal on the 23rd. .. A CT scan of the fossils of the mandible was performed to examine the shape of the internal blood vessels and tubes through which nerves pass in detail.

Soichiro Kawabe, an associate professor at the institute, said, “The jaw sensor may have been useful for behaviors involving small movements such as predation, nesting, childcare, and communication between the same species.” There is.

The team analyzed fossils from the Fukui Prefectural Dinosaur Museum that were excavated in Montana, USA, about 68 to 66 million years ago.