Q. Which era is known as the 'age of mammals'?
Answer: Cenozoic
Notes: The Cenozoic spans only about 65 million years, from the end of the Cretaceous Period and the extinction of non-avian dinosaurs to the present. The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time. Plant living today had its roots in the Cenozoic Era.

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