Question

How long had dinosaurs existed on Earth?

Answer 1

Dinosaurs existed on Earth for approximately 165 million years, from the late Triassic period to the end of the Cretaceous period. During this time, they were the dominant land animals and had a wide range of habitats and lifestyles.

Answer 2

Dinosaurs existed on Earth for around 160 million years, from the Triassic period (about 230 million years ago) until the end of the Cretaceous period (about 66 million years ago). During this time, dinosaurs evolved into a diverse range of species and dominated the land ecosystems of the planet.