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Pleistocene Extinction

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

The Pleistocene Extinction, also known as the Quaternary extinction event, was a period of mass extinction that occurred approximately 11,700 to 2.58 million years ago. It led to the disappearance of many large mammal species such as mammoths, saber-toothed cats, and giant ground sloths.

5 Must Know Facts For Your Next Test

  1. The Pleistocene Extinction primarily affected megafauna, which are large animal species.
  2. Climate change towards the end of the last Ice Age is believed to be a major contributing factor.
  3. Human activities, such as overhunting by early humans, likely played a significant role in these extinctions.
  4. The extinction event marks the transition between the Pleistocene Epoch and the current Holocene Epoch.
  5. Many extinct species from this period have been studied using fossil records found in various parts of the world.
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