Front

What happens to specimens in the fossil record as time goes on?

Back

They become more complex.

Front

What type of fossil is Tikaalik an example of?

Back

Transitional fossil.

Front

What geologic process helps expose fossils that are buried?

Back

Earthquakes.

Front

What do paleontologists use to determine the relative age of fossils?

Back

The order of rock strata.

Front

What is the name of a scientist who studies the fossil record?

Back

Paleontologist.

Front

What is a fossil?

Back

A preserved remains or impression of a once-living organism.

Front

What are the two main types of fossils?

Back

Body fossils and trace fossils.

Front

What is a body fossil?

Back

The actual remains of an organism, such as bones or shells.

Front

What is a trace fossil?

Back

Evidence of an organism's activity, such as footprints or burrows.

Front

What is the significance of transitional fossils?

Back

They show the evolutionary changes between species.