Fossilization

How Fossilization works...

 1. Millions of years ago  a shellfish dies and sinks  into the sea bed.

 2.It's remains are gradually buried  in layers of silt and sand.

 3. Over time many layers  build up on top of the remains  shell, burying it further stone.  underground.

 4. Minerals flow into the buried  and turn them into  layers of silt and sand  around the fossil form rock strata.

 5. Millions of years later  the surface of the Earth <span style="font-family: 'Comic Sans MS',cursive;"> changes. The seabed is <span style="font-family: 'Comic Sans MS',cursive;"> forced above the surface.

<span style="font-family: 'Comic Sans MS',cursive;"> 6. The layers of rock above the shell <span style="font-family: 'Comic Sans MS',cursive;"> erode. The fossil becomes exposed.

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