A 7.3 metre predatory dinosaur that ... will be using state-of-the-art imaging techniques to examine the cracks, fractures and breaks in the bones of this distant relative of Tyrannosaurus rex.

The sale is the second-ever of a fossilised dinosaur skeleton auctioned by Sotheby's. The first, a T-rex nicknamed Sue, was sold to Chicago's Field Museum in 1997 for $8.36m. The Gorgosaurus was ...