Fossil succession relative dating

Geologic time covers the whole sweep of earth's history, from how and when the earth first formed, to everything that has happened on, in, and to the planet since then, right up to now.

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Geology, or the study of rocks, can be a fascinating way to learn about the Earth's history.

Relative dating is a key component to unlocking the mysteries of the Earth's past.

The diagram right shows two distinct faunal assemblages.

What can be deduced from our two distinct faunas in terms of their usefulness in the relative dating of rocks?

When geologists study layers of rocks, they get a glimpse of the past.