Question

what is cretaceous period ?

Answer 1

The Cretaceous Period was the last and longest segment of the Mesozoic Era. It lasted approximately 79 million years, from the minor extinction event that closed the Jurassic Period about 145.5 million years ago to the Cretaceous-Paleogene (K-Pg) extinction event dated at 65.5 million years ago.

Answer 2

Cretaceous period is a geological period and system that spends 72 million years from the end of Jurassic period