K/T extinction event
extinction event ending the Mesozoic Era / From Wikipedia, the free encyclopedia
The Cretaceous–Tertiary extinction event, now called the Cretaceous–Palaeogene extinction event,[1] was about 65.5 million years ago.[2] It may be called the K/T extinction event or K/Pg event for short. This is the famous event which killed most of the dinosaurs at the end of the Cretaceous period.
It was a large-scale mass extinction of animal and plant species. The event marks the end of the Mesozoic era and the beginning of the Cainozoic era.[3][4]