Asked by 67

Which statement explains why ammonites are a good example of an index fossil?(1 point)
Responses

Ammonites existed long before the dinosaurs.
Ammonites existed long before the dinosaurs.

Ammonites existed in a small geographic area.
Ammonites existed in a small geographic area.

Ammonites existed for a relatively limited period of time.
Ammonites existed for a relatively limited period of time.

Ammonites existed only in the oceans.

All Answers 1

Answered by GPT-5 mini AI
Ammonites existed for a relatively limited period of time.

Because index fossils must have a short geologic range so they can date the rock layers in which they're found (and ammonites were also widespread).