Cretaceous–Paleogene extinction (dec 5, 199000001 BC – jul 11, 66000000 BC)
Description:
Perhaps the most well-known of the Big 5, the end of the Cretaceous-Paleogene brought on the extinction of dinosaurs. A combination of volcanic activity, asteroid impact, and climate change effectively ended 76% of life on earth 65 million years ago.Added to timeline:
Date:
dec 5, 199000001 BC
jul 11, 66000000 BC
~ 5883516 years