Which geological era is known as the 'Age of Dinosaurs'?

The Mesozoic is the geological era known as the “Age of Dinosaurs.” It lasted from about 251.9 million to 66 million years ago and included the Triassic, Jurassic, and Cretaceous periods.

Dinosaurs dominated many terrestrial ecosystems during most of this era, although they were not the only important organisms. Marine reptiles such as ichthyosaurs and plesiosaurs flourished in the oceans, while pterosaurs were the dominant flying reptiles. Plants including cycads, ginkgoes, and conifers were also widespread. The Mesozoic began after the end-Permian extinction and ended with the Cretaceous–Paleogene extinction event.

That final event eliminated the non-avian dinosaurs, along with pterosaurs and several major marine-reptile groups. Birds are living dinosaurs in evolutionary terms, so the dinosaur lineage did not disappear completely. The Mesozoic is also sometimes called the Age of Reptiles, but “Age of Dinosaurs” is the standard quiz answer for the era most associated with dinosaur dominance. It was the middle era of the Phanerozoic Eon, between the Paleozoic and Cenozoic.