The Dating Game: Digging Up Fossils
Since ancient times, people had been digging up bones and other mineralized remains of creatures that lived and died a long, long time ago. When dinosaur bones were unearthed in China about a thousand years ago, people wondered about the kinds of animals that had these bones. This was probably the start of dragon legends. All over the world, there are places that if one digs deep enough, one may find some ancient shells, bone fragments, a piece of petrified wood, or even a leaf print. These relics are called fossils. They are usually found through digging. In fact, the term "fossil" comes from a Latin word that means, "to dig." Fossils are remains of ancient life; they give us clues about the distant past. Countless animals and plants that lived a long time ago were preserved in different ways. In hot and dry places, actual bones or teeth of an extinct creature are sometimes preserved; in moist places, the relic may be replaced by a rock-like copy of ...