FOSSILS Multiple Choice Test

This type of fossil starts as a mold, but sediment seeps in and fills the space in the mold.

When a plant or animal is coverd by layers of sediment. After the sediment turns into rock, a hollow space is left in the rock.

Tracks or plant parts left in the mud that hardens into rock.

Minerals in the groundwater slowly fill in or replace bones or parts of a plant.

Why are fossils not the actual bones of an ancient animal?

What is one Missouri fossil that proves that Missouri was coverd by an ocean millions of years ago?

Describe a crinoid.

What is a gastropod similar to?

Trilobites are like these creatures that live today.

Bi-Valve Fossils are similar to these creatures.

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