Question

What are the characteristics of an index fossil?

A.limited to a short span of geologic time but widely distributed

B. Geographically limited

C.found only in shale

D.preserved as a mold

E. Large enough to see without a hand lens

Answer 1

D. Preserved as mold

Answer 2

I think as a mold. when the Flood came in Genesis, i believe that when the fish were washed away, the kinda made a mold in a rock.