Discovery of skull provides missing link in the evolution of Earth's most ferocious cold-blooded killer

The remains of a horse-sized species of tyrannosaur have been discovered in Uzbekistan, revealing some long-sought-after pieces of a puzzle explaining how the most fearsome predator ever to stride across our planet came into being. Tyrannosaurus rex was the undisputed king of the Cretaceous Period. Fully grown, this terrific beast weighed in at seven tonnes, … Continued