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if the original organism dissolves or decays, leaving a hollow in the rock, that is a mold.

If the mold fills up with sediment which gradually hardens into the shape of the original organism, then that is a cast.

Casts are copies of fossilized plants or animals. Molds are hollow impressions of the fossil.

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Skylar Hagenes

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3y ago

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Related Questions

How is fossils mold different from a fossil cast?

a mold is what you pour materials into to make a cast


Can a fossil be a mold cast?

no


How is a cast fossil different from a mold fossil?

if the original organism dissolves or decays, leaving a hollow in the rock, that is a mold. If the mold fills up with sediment which gradually hardens into the shape of the original organism, then that is a cast. Casts are copies of fossilized plants or animals. Molds are hollow impressions of the fossil.


How a fossil mold is different from a fossil cast?

if the original organism dissolves or decays, leaving a hollow in the rock, that is a mold. If the mold fills up with sediment which gradually hardens into the shape of the original organism, then that is a cast. Casts are copies of fossilized plants or animals. Molds are hollow impressions of the fossil.


How is the mold like the cast?

Mold is like cast in being a type of fossil .


Which forms first a fossil mold or a fossil cast?

First, a thin layer of sediment hardens and forms a mold. Then, what is known as a cast is when a new layer of sediment fills in the mold breaking down the creature/ animal/fossil.


What is a mold and cast fossil?

A mold and cast fossil is and exact stone replica of an organism but it is formed like this. The first layer of sediment hardens and forms a mold. then a new layer of sediment fills in the mold and hardens. That is the cast.


What forms when a fossil mold is filled?

When a fossil mold is filled, it forms a fossil cast. The cast is a replica of the original organism or object that created the mold, made of the same material as the original organism or object. Fossil casts are valuable in paleontology for studying the morphology of ancient organisms.


What are mold and cast fossils?

A fossil mold is formed by the impression left in rock by the remains of an organism. A cast fossil occurs when the mold is filled in by precipitating minerals.


What is cast fossil?

A cast fossil is formed when a mold fossil is filled in with minerals or sediments, creating a replica of the original organism. The mold is created when an organism decays or is buried in sediment, leaving an impression behind. Cast fossils can provide valuable information about the shape and structure of the original organism.


The fossil that is created when a mold is filled in with rock material?

A cast.


Which fossil type could contain preserved parts of a organism?

It is called a mold fossil, which can become a cast fossil. After the soft parts of the animal rot away, a cavity remains (the mold fossil) which becomes filled with hardened sand or mud (the cast fossil).