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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 and animal …

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

    K–T extinction, a global extinction event responsible for eliminating approximately 80 percent of all animal species about 66 million years ago. It was characterized by the purging of many lines of …

  3. 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 animals …

  4. 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 endorsed this …

  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, 75% of …

  6. GEOL 104 The Cretaceous-Paleogene Extinction: All Good Things... - UMD

    Aug 12, 2025 · Key Points: •The disappearance of non-avian dinosaurs was just one part of a larger event: the Cretaceous-Paleogene (K/Pg) mass extinction (formerly called the Cretaceous-Tertiary or …

  7. 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. For many years,...

  8. What is KT? - BeGneiss

    This extinction event marks a major boundary in Earth’s history of life, the K-T or Cretaceous-Tertiary boundary marking the end of the Mesozoic Era and all our hopes for Jurassic Park lasting to today.

  9. K/T extinction event - Simple English Wikipedia, the free encyclopedia

    This is the famous event which killed most of the dinosaurs at the end of the Cretaceous period. It was a large-scale mass extinction of animal and plant species.

  10. KT Extinction: Causes, Impact & Key Facts Explained - Vedantu

    The Cretaceous-Paleogene (K-Pg) extinction event or the Cretaceous-Tertiary extinction event is known as the KT extinction event. The KT extinction is characterized by the mass extinction of at least three …