What is the result when an encased organism dissolves completely, leaving behind an empty void shaped like the original?

Answer

A mold

A mold is the empty impression left in the surrounding sediment after the buried object dissolves. If this void is subsequently filled with secondary material, the resulting object is called a cast.

What is the result when an encased organism dissolves completely, leaving behind an empty void shaped like the original?
Geologyrockfossilpreservationlayer