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The Cretaceous–Paleogene extinction event, also known as the K-T extinction, occurred approximately 66 million years ago and is believed to be the cause of the rapid increase in speciation among mammalian species.

The Impact of the Cretaceous-Paleogene Extinction Event on Mammalian Speciation

The Cretaceous–Paleogene extinction event, also known as the K-T extinction, is a major extinction event that occurred 66 million years ago. It is believed to have been caused by an asteroid impact, and is one of the largest extinction events in Earth's history, as it caused the extinction of 75% of all species, including the non-avian dinosaurs. This event also had a profound effect on the evolution of mammals, leading to a rapid increase in speciation. This event is thought to have played a major role in shaping the Earth's current biodiversity.

Learn more about Extinction events: https://brainly.com/question/13830506

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