Fossils: What Are Fossils?

Fossils are the remains of animals and plants that had lived and died when a layer of rock was still mud. These layers of rocks are pages in the Earth' s book, filled with Pictures of the fossilized animals and plants. The Fossilization  process is caled Taphonomy .
Two different kinds of fossils can be distinguished : body fossils and trace fossils. The first one reveals the body structure of the organism. The second one, reveals the activities of the entity.


Fossilized body Corals :

Traces fossils :

It is from the fossils that we have learned (and still we learn ) about the plants and animals that have lived on the Earth, millions years ago.