How are fossils formed?

How are fossils formed?

1. An animal, such as a dinosaur, dies and falls to the bottom of a riverbed.
2. The flesh of the animal rots away or is eaten by smaller creatures, leaving only the bones (skeleton) behind.
3. Mud and sand (sediment) cover the skeleton.
4. Over many years, layers of soft mud and sand are pressed into hard rock.
5. The bones slowly wash away by little trickles of ground water, leaving open spaces (natural molds) in the exact shape of the old dinosaur bones.
6. After millions of years, tiny pieces of rock flowing in ground water fill the mold.
7. Over time, the entire skeleton mold becomes solid rock.
8. The rock surrounding the skeleton eventually rises to Earth's surface during earthquakes or the natural rising of mountains.
9. Top rock layers wear away by rain and wind, revealing the fossils.
10. Or, paleontologists (scientists who study fossils) dig deep down into Earth's surface to find these fossils.

Source: https://science.lovetoknow.com/understanding-science/explaining-fossils-kids