Maheswari

Fossil record.

Fossil record means all the fossils found in rocks, and what they tell us about life on Earth long ago.

What does the fossil record show?

• Very old, simple life.

• Later plants, fish, dinosaurs.

• Even later birds, mammals, and humans.

• How some animals changed or became extinct.

What is Hyracotherium?

Hyracotherium was the earliest known horse ancestor.

Key Points.

• The fossil record is the collection of all fossils found on Earth.

• Fossils are found in layers of rocks.

• Deeper rock layers contain older fossils.

• Upper rock layers contain younger fossils.

• It shows how plants and animals changed over time.

• It provides evidence for evolution.

• It shows that many species became extinct.

• It helps scientists know when organisms lived.

• The fossil record is not complete because not all organisms become fossils.