Clues from Fossils

1. Clues from Fossils Fossils give us information about living things in the past.

2. Scientists use clues from fossils to learn about the past. What Can you learn from fossils?

3. When a plant or animal dies, the soft parts quickly decay. Hard parts are left behind. How Fossils Form teeth bones shells

4. Most fossils are found in sedimentary rocks. The remains are quickly buried by the sediments. Sedimentary Rocks

5. Sometimes a shallow print or impression is the only evidence that a animal or plant ever existed. Imprints

8. Shells often leave behind fossils known as molds. It is a hollow form with a particular shape. Molds

9. A mold forms when water seeps into the rocks where a shell is buried. The water dissolves the shell, which leaves a hollow space where the shell once was. Molds

12. Coral Fossil

15. Dinosaur Tracks

17. Cast • A cast is formed or shaped in a mold when minerals slowly accumulate in a mold. They take the shape of the original shell and form a copy.

20. Cast • A cast is formed or shaped in a mold when minerals slowly accumulate in a mold. They take the shape of the original shell and form a copy.

22. Trilobite

23. Ancient Fish

24. Sharks Tooth

27. Glen Rose, Texas

34. Other Ways Fossils Form • Amber • Sometimes entire insects became trapped in sticky sap oozing from certain trees.