A report in the Belfast Telegraph Monday says dinosaurs were already on the path to extinction millions of years before the meteor impact that is widely believed to have wiped them out, scientists said. Experts have always believed dinosaurs were flourishing on Earth just before the disaster struck when a huge asteroid or comet hit the planet just off the coast of Mexico, the report said. New research suggests that in reality, more dinosaur species were vanishing than new ones were emerging up to 50 million years earlier. Research shows giant long-necked plant-eaters such as Diplodocus were lost at the fastest rate, while meat-eating relatives of the Tyrannosaurus rex were in a slower...