During what period did the dinosaurs first appear?

Dinosaurs originally appeared during the Triassic period, between 243 and 233 million years ago. However, the precise origin and timing of dinosaur evolution remain an ongoing topic of study. They were the dominant terrestrial vertebrates and their dominance persisted throughout the Jurassic and Cretaceous periods.

Asked by Vasilii Kulev · Last updated 3 years ago · 1.5K views · SOURCE