Cretaceous–Paleogene extinction event (English, noun)
expansion: Cretaceous–Paleogene extinction event
Senses:
glosses: The mass extinction of the majority of plant and animal species on Earth including all non-avian dinosaurs, which took place 65.5 million years ago marking the end of the Cretaceous period, and is widely accepted as having been caused by an impact event.
Forms: