Fossils of what parts of an organism are most commonly found

Hard body parts such as teeth, bones, shell, hard woody stem mostly form the fossils.

Explanation:

Fossils refer to the preserved remains of the living beings. Fossils are formed when the hard body parts of dead organisms are preserved in rocks. The hard body parts do not decompose easily and form fossils. Most of the fossils are of bones, teeth, woody stems of plants and shells of animals. Soft body parts are decayed easily and mostly, do not form the fossils.

When an organism dies, its soft parts often decay quicly or are eaten by animals. The hard parts include bones, shells, teeth, seeds, and woody stems.