The temperature increased about three to four degrees very rapidly between 65.4 and 65.2 million years ago, which is very near the time of the extinction event.

The extinction that occurred 65 million years ago wiped out some 50 percent of plants and animals. The event is so striking that it signals a major turning point in Earth's history, marking …

May 13, 2025 · The K-T Extinction divides the Cretaceous Period, which ended the Mesozoic Era, and the Tertiary Period at the start of the Cenozoic Era, which we currently live in. The K-T …

The Cretaceous–Paleogene extinction event was a significant mass extinction event that occurred approximately 65 million years ago, marking the boundary between the Cretaceous period and …

It is widely agreed that such an object -- 10 kilometers across -- struck just off the coast of the Yucatan peninsula 65 million years ago. According to scientists who maintain that...

Dinosaurs are the most famous victims of the extinction at the end of the Cretaceous, 65 million years ago. But they weren't alone. Nearly half of Earth's species disappeared -- including …

Dec 3, 2025 · The world 65 million years ago, marking the beginning of the Paleogene period, was a vastly different place than it is today. The non-avian dinosaurs, the dominant terrestrial …

Their sudden disappearance 65 million years ago, along with about 70 percent of all species then living on Earth, is known as the K-T event (Cretaceous-Tertiary Mass Extinction event).

When did dinosaurs become extinct? Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years.

Jun 25, 2003 · Most Earth scientists now agree that 65 million years ago, an enormous space rock slammed into what is now Chicxulub, Mexico, triggering a mass extinction.