For how long were dinosaurs the dominant species on the Earth?
A)5 million years
B)37 million years
C)160 million years
D)546 million years

Question

Quizplus · Accepted Answer

Dinosaurs were the dominant species on Earth for approximately 160 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous period (about 65 million years ago) when they became extinct. Option A is too short, option D is too long, and option B is too specific and incorrect as it refers to the dominance of a specific group of dinosaurs (the ornithopods) during the Cretaceous period, not all dinosaurs throughout their existence.

For How Long Were Dinosaurs the Dominant Species on the Earth