Fossils and Evolution

What is a fossil?

• A huge cat with two long, saber-shaped teeth.

• Remains or traces of plants and animals that lived a long time ago.

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Fossils of the Saber-Toothed Cat are found in places like?

• La Brea Tar Pits

• Silt

• Rock layer

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What is a paleontologist?

• A scientist that studies fossils.

• A type of wolf that lived in North America.

• A small fossil that can only be studied with a microscope.

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Where are fossils of marine life like whales and sharks found?

• Sharktooth Hill

• Silt

• Rock layer

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What is Silt?

• Fine sand, clay, or other material carried by moving water and deposited at the bottom of a body of water like the ocean.

• Sedimentary rocks

• Impression or other preserved sign of activity such as feeding, scratching, burrowing, walking, or resting.

What are mold fossils?

• Hollow space left in a rock by animal or plant remains that have dissolved.

• When molds fill in with minerals or sediments that later harden.

• Evidence that organisms have changed over long periods of time.

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What is comparative anatomy?

• Observing similar structures in organisms and comparing them to each other.

• An unborn or unhatched baby.

• A system in organisms made up of bones.

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How many bones are in the human body?

• 100

• 206

• 300

Human bones in the hands and arms are similar to the bones in the wings of bats and birds.

• True

• False

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Which animal, other than humans, has evolved?

• Dogs

• Whales

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