Fossils are the preserved traces of an animal or plant life that existed many years ago. The animal or plant was pressed into the rock as it formed in the earth over time. The remains left indentations that show the plant or animal’s shape or skeleton form. Fossils are quite fun to collect because each one is a unique treasure. They are each a window into the past that shows some type of life that existed millions of years before our society. Many of the fossils that are discovered are of animals or plants that are extinct today. The only way we can learn about them or even know of their existence is through fossils. Fossils used to be seen only in museums or special exhibits. Today, you can collect them by purchasing fossils for sale.