Which is the most common methods of fossilization? Explain how it occurs.

Explanation

Actual remains -The original hard parts such as bones, teeth or shells are preserved as such in the Earth.s atmosphere. This is the most common method of fossilization. When marine animals die, their hard parts such as bones and shells, etc., are covered with sediments and are protected from further deterioration. They get preserved as such as they are preserved in vast ocean, the salinity in them prevents decay. The sediments become hardened to form definite layers or strata. For example, Woolly Mammoth that lived 22 thousand years ago were preserved in the frozen coast of Siberia as such. Several human beings and animals living in the ancient city of Pompeii were preserved intact by volcanic ash which gushed out from Mount Vesuvius