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 only in the oceans.
Ammonites existed only in the oceans.
Ammonites existed for a relatively limited period of time.