Part 8/9:
All these magnificent dinosaurs, however, met their demise due to the Cretaceous-Paleogene extinction event about 66 million years ago. The prevailing theory suggests that a colossal asteroid impact near Mexico triggered catastrophic climate changes and environmental disturbances that obliterated the dominant terrestrial reptiles. Ultimately, the largest creatures that ever roamed the Earth, having thrived for millions of years, could not survive the dramatic shifts that ended the age of dinosaurs.