Scenarios about 'cretaceous-paleogene boundary'
The geological time boundary marking the mass extinction event approximately 66 million years ago that eliminated roughly 75% of Earth's species, including all non-avian dinosaurs. This catastrophic transition between the Cretaceous and Paleogene periods was likely caused by an asteroid impact near the Yucatán Peninsula, fundamentally altering Earth's ecosystems and creating evolutionary opportunities that eventually allowed mammals to become dominant terrestrial vertebrates.
What If The Dinosaurs Never Went Extinct?
Exploring the alternate timeline where the Cretaceous-Paleogene extinction event never occurred, allowing dinosaurs to continue evolving alongside mammals for the past 66 million years.