Fossils show that animals lived in the same location today as they once did, so scientists know more about today's environment.

Fossils show how animals viewed their surroundings, so scientists know more about past animals.

Fossils show where animals once lived, so scientists know more about the environment and how it has changed.

Fossils show what color animals once were, so scientists know more about what they ate.

The rocks in the area most likely formed in the last 1,000 years.

The area was most likely also a habitat for sea stars and sea urchins.

The area may once have been the site of an ocean.

The rocks in the area may have been moved from a different location.

They may provide evidence that Pennsylvania was once covered by warm ocean waters since most corals are presently found in these environments.

They may indicate that the earliest settlers moved inland from the coasts and brought coral-based fertilizer for their crops.

They may provide evidence for evolution by comparing adaptations for living on land with aquatic adaptations in the same species.

They may indicate that corals may have lived on land at some point in history because corals presently live in aquatic environments.

dry land → ocean

ocean → dry land → ocean

dry land → ocean → dry land

ocean → dry land