The era of the domination of the dinosaurs?

Dinosaurs are creatures that appeared on Earth during the Mesozoic era. They have inhabited our planet for over 160 million years. During this period, dinosaurs were the predominant vertebrates, representing a fairly diverse group of animals. Some were huge, others very small, and among them were both predators and herbivores. After a long enough stay on Earth, these animals began to die out. This process began at the end of the Cretaceous. The exact reason for this has not been established.