1 - An organism dies and is buried before the remains are completely destroyed., 2 - Over hundreds, thousands and millions of years more and more layers of sediment build up burying the skeleton deeper., 3 - The layers eventually form sedimentary rocks., 4 - Dissolved minerals, transported by ground-waters in the sediment, fill tiny spaces in the bones., 5 - Under Pressure toe minerals turn to rock, 6 - The earth is eroded away exposing the fossil.,

The stages involved in fossil formation

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