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

    3 days ago · Dinosaur - Extinction Causes, Evidence, & Theory: The mass extinction of dinosaurs 66 million years ago remains a misconception; the fossil record shows that dinosaurs were …

  2. Cretaceous–Paleogene extinction event - Wikipedia

    Tyrannosaurus was among the dinosaurs living on Earth before the extinction. Scientists agree that all non-avian dinosaurs became extinct at the K–Pg boundary.

  3. What killed the dinosaurs? - Natural History Museum

    Dinosaurs that failed to adapt went extinct. But then 66 million years ago, over a relatively short time, dinosaurs disappeared completely (except for birds). Many other animals also died out, …

  4. Dinosaur extinction facts and information - National Geographic

    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.

  5. Dinosaur Extinction: What Really Wiped Them Out?

    Jul 20, 2025 · Scientific evidence reveals a complex story of the dinosaurs’ end, combining long-term planetary stress with a sudden catastrophic event that reshaped life.

  6. The Rise and Fall of Dinosaurs, As Explained by Extinction Events

    May 2, 2025 · This article explores the major extinction events that influenced dinosaur survival and their eventual extinction, breaking down the causes, effects, and lasting legacy of these …

  7. What caused dinosaurs to go extinct? – The Institute for …

    Nov 16, 2025 · The extinction of the dinosaurs, one of Earth’s most dramatic extinction events, was primarily caused by the impact of a large asteroid approximately 66 million years ago, …

  8. Nat Geo Explores: Why the DinosaursExtinction is an

    Oct 19, 2023 · Dinosaurs ruled the world for roughly 140 million years—until they suddenly disappeared. While decades of research point to an asteroid impact at Chicxulub crater as the …

  9. Extinction Events - U.S. National Park Service

    Feb 28, 2025 · The end-Cretaceous extinction struck down many groups, although it particularly affected land-dwelling animals larger than a few pounds in weight. Aside from a few groups of …

  10. Dinosaur Extinction Discovery

    Mar 3, 2025 · Over this time, the Earth experienced large-scale fluctuations in the climate, and eventually a six-mile-wide meteorite impact that led to the extinction of more than 75% of life …