Multiple choice

Which geological era is characterized by major extinction events?

  1. Paleozoic

  2. Mesozoic

  3. Cenozoic

  4. Tertiary

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

The Mesozoic era is famous for the extinction of non-avian dinosaurs at the K-Pg boundary, though the Paleozoic also had major events. Given the options, Mesozoic is the most commonly cited in this context for major mass extinctions.