When did the dracorex die?

Dracorex is a genus of dinosaur known from fossils that date back to the Late Cretaceous period, approximately 66 million years ago. It is believed to have lived around the same time as many other dinosaurs before the mass extinction event that occurred at the end of the Cretaceous, which led to the extinction of most dinosaur species. Consequently, Dracorex, like many dinosaurs, did not "die" at a specific moment but rather became extinct as a species during this broader catastrophic event.