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5. What Are the Most Common Extinction Theories?

Because nobody actually knows what brought about the extinction of the dinosaurs and probably nobody ever will, scientists only have their well-researched theories on the matter. Of these theories, there are several, which many believe each had their hand in the mass extinction. The best estimate that we have is that a number of factors came together to rid the planet of the giant beasts that once ruled it.

Did You Know? There wasn’t just one mass extinction. The Mesozoic Era didn’t just end with extinction - it began with one too.

theories of extinction dinosaurs gremlin / Getty Images

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