Scientists find fossil from THE DAY the dinosaurs died 66m years ago: Leg of Thescelosaurus was 'ripped off in aftermath' of huge asteroid strike that wiped out most species on Earth Dinosaurs were wiped out by the Chicxulub event - a plummeting asteroid that hit Earth 66 million years ago The asteroid more than six miles in diameter slammed into what is now Mexico, leaving a 93-mile wide crater Experts found the fossilised leg of a dinosaur killed and what appears to be a fragment of the asteroid itself Findings were made at Tanis, a renowned paleontological site in North...