Paleontology is the study of primordial life. Being divided into sub-categories like paleobotany and biostratigraphy, it is a very vast subject. It includes studying the history of the earth, its environment, the organisms that lived here, the process of their evolution and their interactions with other species. Thus, paleontologists are concerned with the process of human evolution and the effects of the environment on their development.

Paleontology is a multidisciplinary course and uses the fundamentals of both geology and biology as a base of study. Paleontologists also use different sciences to make the process easier. Thus, paleontologists need to have a fair knowledge of ecology to read fossils. The knowledge of chemistry is equally important to uncover the state of fossils or rocks, which helps in determining the environment of the earth at a certain period of time. However, the fossil is a most important concept that plays a major role in defining the concept of planetology. It is the remains of plants and animals of past that have been preserved in earth’s crust. There are two forms of fossil found in nature, i.e. body fossil and trace fossil. The body fossil is comprised of the dead remains of plants and animals that are from prehistoric times. Some examples of body fossil are skeletal, eggs, bones, and teeth. Whereas, the trace fossil includes activities of various organisms that existed a million of years ago. Some examples of trace fossil are egg shell, tooth marks, and tracks.