This figure turns fossil range labels into one broad time bucket.

• The choices are broad eras or periods: Paleozoic, Triassic, Jurassic, Cretaceous, or Cenozoic.
• The answer comes from the fossil range field, not from pop-culture dinosaur vibes.
• Each round forces distinct answer labels so the choices stay meaningful.

The bucket is broad on purpose. You are choosing a geologic home shelf, not a precise stage.