Question

Sol.(d) [Key Concept: Dinosaurs — Dominated the Mesozoic Era] Dinosaurs dominated the world in the Mesozoic era. In the Triassic period (early Mesozoic), giant reptiles (dinosaurs) emerged. In the Jurassic period (middle Mesozoic), dinosaurs diversified and became abundant — the golden age of dinosaurs. In the Cretaceous period (late Mesozoic), mass extinction of dinosaurs occurred approximately 65 million years ago.