Maharashtra State PSC Model Paper 1

The correct answer is Mesozoic.

• Dinosaurs became extinct from Earth between 65 to 144 million years ago.
• This period on Geological time scale was cretaceous period belonging to the Mesozoic era.
• After their extinction, in the Cainozoic era, small mammals like mice and rats evolved and that era is known for the origin of mammals.
• Pre-Cambrian Period is the longest era in the world's history of classification.