Mesozoic Era (252–66 million years ago)

Question 1

Q: Why is the Mesozoic Era called the “Age of Dinosaurs”?

Answer 1

A: Dinosaurs became the dominant terrestrial animals.

Question 2

Q: What vertebrates evolved during the Mesozoic Era?

Answer 2

A: Dinosaurs, mammals, birds, and pterosaurs.

Question 3

Q: What caused the end of the Mesozoic Era?

Answer 3

A: A catastrophic meteor impact leading to a mass extinction.