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  1. Cretaceous–Paleogene extinction event - Wikipedia

    The Cretaceous–Paleogene (K–Pg) extinction event, [a] formerly known as the Cretaceous-Tertiary (K–T) extinction event, [b] was a major mass extinction of three-quarters of the plant …

  2. K–T extinction | Overview & Facts | Britannica

    Nov 7, 2025 · K–T extinction, a global mass extinction event responsible for eliminating approximately 80 percent of all species of animals at or very close to the boundary between …

  3. How the K-T Boundary Changed Life Forever: A New Era for …

    Dec 21, 2024 · The K-T Boundary marks one of the most significant turning points in Earth’s history. This event, which occurred about 65 million years ago, led to the extinction of the …

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

    Mar 24, 2010 · The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago.

  5. 12.3: The K-T Extinction - Geosciences LibreTexts

    This extinction event was likely caused by a large bolide (an extraterrestrial impactor such as an asteroid, meteoroid, or comet) that collided with earth. Ninety percent of plankton species, …

  6. The Legendary K-T Extinction Event and Its Effect on Dinosaurs

    Oct 22, 2025 · Approximately 66 million years ago, a catastrophic event occurred that reshaped life on Earth in dramatic ways: the K-T extinction event. Named after the boundary between …

  7. K-T Event - Encyclopedia.com

    The K-T event (Cretaceous-Tertiary event) refers to the mass extinction of the dinosaurs that took place approximately 65 million years ago (mya). In addition to the dinosaurs, most large land …

  8. The K/T Dinosaur Extinction Event - ThoughtCo

    Feb 28, 2018 · Today, most paleontologists agree that the K/T meteorite (or comet) was the prime cause of the extinction of the dinosaurs — and in 2010, an international panel of experts …

  9. The Cretaceous-Paleogene Extinction Event - WorldAtlas

    Dec 6, 2019 · The Cretaceous-Paleogene extinction is also known by several names including Cretaceous-Tertiary, K-T extinction, or K-Pg extinction. It is probably the best-known global …

  10. Chicxulub Impact Event - Lunar and Planetary Institute (LPI)

    The abbreviation for the boundary between the Cretaceous and Tertiary periods is the K-T boundary, where K is the abbreviation for the German form of the word Cretaceous. This …