Hi There! I think you mean the difference between a mold and a cast fossil. A mold and a trace fossil are the same things. A cast is a 3D example of a fossil while a mold fills up the fossil's imprint like mud.
Mold & a Cast Fossil are the same thing. A cast is a 3D example of a fossil while a mold fills up the fossil's imprint like mud. The answer above this answer is correct. Hope this helps! Brainiest would make my day! :)
