New species of dinosaur discovered that 'rewrites' T.rex family tree

Victoria GillScience correspondent, BBC NewsMasato HattoriAn artist's impression of Khankhuuluu mongoliensis, the newly discovered tyrannosaur ancestor Scientists have discovered a new species of dinosaur - in the collection of a Mongolian museum - that they say "rewrites" the evolutionary history of tyrannosaurs.Researchers concluded that two 86 million-year-old skeletons they studied belonged to a species that…