The main period of Mesozoic era include

Triassic period and Cretaceous period
Jurassic period and Triassic period
Triassic period, Jurassic period and cretaceous period
cretaceous period and Jurassic period

The correct answer is C. Triassic period, Jurassic period and cretaceous period.

The Mesozoic Era is the middle of the three geological eras that make up the Phanerozoic Eon. It is also known as the Age of Dinosaurs. The Mesozoic Era began 252 million years ago and ended 66 million years ago. It is divided into three periods: the Triassic Period, the Jurassic Period, and the Cretaceous Period.

The Triassic Period was the first period of the Mesozoic Era. It began 252 million years ago and ended 201 million years ago. The Triassic Period is known for the rise of the dinosaurs. The first dinosaurs appeared during this period.

The Jurassic Period was the second period of the Mesozoic Era. It began 201 million years ago and ended 145 million years ago. The Jurassic Period is known for the dinosaurs. The dinosaurs reached their peak during this period.

The Cretaceous Period was the third and final period of the Mesozoic Era. It began 145 million years ago and ended 66 million years ago. The Cretaceous Period is known for the extinction of the dinosaurs. The dinosaurs became extinct at the end of this period.

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