Multiple choice

Dinosaurs became extinct in

  1. Permian

  2. Jurassic

  3. Triassic

  4. Cretaceous

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago.