The Cretaceous–Paleogene (K–Pg) extinction event, [a] also known as the K–T extinction, [b] was the mass extinction of three-quarters of the plant and animal species on Earth [2] [3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.

Jan 25, 2025 · Proposed causes for the extinction of dinosaurs have included everything from disease, heat waves, cold spells, faunal changes, and an asteroid collision during the K–T boundary.

Jun 21, 2023 · The dawn of dinosaurs began with the Permian mass extinction, also known as the Great Dying. This event, around 252 million years ago, killed more than 90 percent of life on Earth at the time.

Jul 31, 2019 · Learn about the mass extinction event 66 million years ago and the evidence for what ended the age of the dinosaurs. Abundant fossil bones, teeth, trackways, and other hard evidence have...

Mar 24, 2010 · Dinosaurs thrived in the planet’s consistently humid, tropical climate. But in the late Mesozoic Era that corresponds with the extinction of the dinosaurs, evidence shows that the planet...

It is assumed by many that the dinosaurs went extinct very quickly following the asteroid strike. But, while a great many animals died at the moment of impact and in the weeks immediately following—particularly near ground zero—global mass extinction took a while, and it affected certain species more dramatically than others.

Find out why most dinosaurs became extinct 66 million years ago at the end of the Cretaceous Period. Birds were the only dinosaurs to survive the mass extinction.

Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years. If all of Earth time from the very beginning of the dinosaurs to today were compressed into 365 days (one calendar year), the dinosaurs appeared January 1 and became extinct the third week of September.

History: Until recently, people simply knew that dinosaurs went extinct — their fossils were found throughout the Mesozoic era, but were not located in the rock layers (strata) of the Cenozoic era. So, we knew that dinosaurs went extinct some 64-66 million years ago, but that was all.

Aug 23, 2016 · Dinosaurs became extinct approximately 66 million years ago. (A more exact figure can be found further down the page.) This mass extinction didn’t just affect the dinosaurs; many other animals and plants also died out during this period.