1.Direct Fossils: The direct fossils are those fossils, which are formed by the burial of dead living organism and the remains as if skeleton gets preserved due to sediment and results in direct fossil.
2.Ichnofossils: Ichnofossils are the fossils, which are formed out of the parts that do not belong to living organisms, like eggs or nests or footprints or feces.
3.Chemofossils: Chemofossils are the fossils, which are made up of chemicals that have been left by the earlier life forms. They are the biological signals to provide a mean of communication to organisms.
4.Resin Fossils: Organisms which are trapped in the amber and which are wholly preserved for millions of years. They are in form of bacteria and fungi and sometimes, insects can also be found .
5.Living Fossils: These fossils bear a strong similarity with the species, which had before identified only through the fossil record. It is the term, which is generally, applied either for formerly undiscovered life forms.
6.Body fossils: it is found in the hard parts of the body, which includes the bones or claws and teeth.
