High School

What is the time period of the Jurassic era?

1) 145 - 200 Ma
2) 200 - 145 Ma
3) 145 - 200 BC
4) 200 - 145 BC

Answer :

Final answer:

The time period of the Jurassic era is 145 - 200 million years ago (Ma). It was a geologic period that lasted approximately 56 million years, marked by the flourishing of dinosaurs and the evolution of birds, mammals, and flowering plants.

Explanation:

The time period of the Jurassic era is 1) 145 - 200 Ma (million years ago).

The Jurassic era was a geologic period that spanned approximately 56 million years, starting from the end of the Triassic Period (201.3 Ma) and ending at the beginning of the Cretaceous Period (145 Ma).

During the Jurassic Period, dinosaurs flourished and it was considered the golden age of dinosaurs. This period also saw the evolution of the earliest birds, major groups of mammals, and flowering plants.