Question

According to scientists at the beginning of which era animals became abundant?

Answer 1

They could be the ancestors of later animals, or they may have been completely erased by extinction

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Answer 2

During the Mesozoic, or "Middle Life" Era, life diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth. The period, which spans from about 252 million years ago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs.

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