The Cretaceous–Paleogene extinction killed 75 percent of all species—and allowed primordial snakes to flourish.
The doom of the dinosaurs was good news for snakes. According to new research, snake biodiversity began increasing shortly after the Cretaceous–Paleogene mass extinction—you know, the one brought about by a huge asteroid impact 66 million years ago. The asteroid caused around 75 percent of all species, and all of the non-avian dinosaurs, to go extinct.
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