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  2. Cretaceous–Paleogene extinction event - Wikipedia

    en.m.wikipedia.org/wiki/Cretaceous–Paleogene_extinction...

    The CretaceousPaleogene (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.

  3. Dinosaur extinction facts and information | National Geographic

    www.nationalgeographic.com/science/article/dinosaur-extinction

    Why did the dinosaurs go extinct? Learn about the mass extinction event 66 million years ago and the evidence for what ended the age of the dinosaurs.

  4. Dinosaur - Extinction Causes, Evidence, & Theory | Britannica

    www.britannica.com/animal/dinosaur/Extinction

    Dinosaur - Extinction Causes, Evidence, & Theory: The mass extinction of dinosaurs 66 million years ago remains a misconception; the fossil record shows that dinosaurs were already in decline during the late Cretaceous.

  5. What killed the dinosaurs? - Natural History Museum

    www.nhm.ac.uk/discover/dinosaur-extinction.html

    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.

  6. Why Did the Dinosaurs Die Out? ‑ Causes & Dates - HISTORY

    www.history.com/topics/pre-history/why-did-the-dinosaurs...

    The Permian-Triassic extinction event, known as the Great Dying, occurred 251.4 million years ago and eradicated 96 percent of all marine species and 70 percent of all terrestrial...

  7. Since the 1980s, scientists have believed that the main culprit for the dinosaur extinction was an asteroid.

  8. How mammals won the dinosaurs' world - BBC

    www.bbc.com/future/article/20220812-dinosaur-extinction...

    How did a band of small, insignificant mammals scuffling in the shadows survive the asteroid that killed the dinosaurs?

  9. Why the dinosaurs’ extinction is an ongoing puzzle

    www.nationalgeographic.com/science/article/why-dinosaurs...

    Dinosaurs ruled the world for roughly 140 million yearsuntil they suddenly disappeared. While decades of research point to an asteroid impact at Chicxulub crater as the end of the...

  10. DinosaursExtinction, Timeline & Definition - HISTORY

    www.history.com/topics/pre-history/dinosaurs-an-introduction

    Why Did the Dinosaurs Die Out? Dinosaurs mysteriously disappeared at the end of the Cretaceous Period, around 65 million years ago. Many other types of animals, as well as many species of...

  11. How an asteroid ended the age of the dinosaurs | Natural ...

    www.nhm.ac.uk/discover/how-an-asteroid-caused-extinction...

    Sixty-six million years ago, dinosaurs had the ultimate bad day. With a devastating asteroid impact, a reign that had lasted 180 million years was abruptly ended. Prof Paul Barrett, a dinosaur researcher at the Museum, explains what is thought to have happened the day the dinosaurs died.