What Is a Cast Fossil?

Answer

A cast fossil preserves the impression of the hard parts of an organism, such as a shell or exoskeleton. Cast fossils are most commonly found in sandstones and other porous rocks. Since hard parts do not decay as quickly as softer tissues, they are most likely to leave cast fossils.

As the softer parts of an organism decay and dissolve, a detailed impression of the organism is left behind in rock. Cast fossils result when minerals are deposited in these molds. Artificial cast fossils can also be created by using plaster of Paris or latex to fill an existing mold.

Q&A Related to "What Is a Cast Fossil?"
1. Fill the large container that you have chosen half-full with modeling clay. This will serve as the base for the mold. 2. Clean the fossil with a soft brush or a dental pick. Make
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Mold.
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A cast fossil is a fossil that retains the shape of the original object. A mold
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Think of an ice cube tray.. it has squarish shaped holes, or molds of cubes. When you fill it with water and freeze it, you create casts of the cubes. Now think of of something like
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