Fossils

Fossils Fossils are presreved evidence of dead organisms that lived thousands or even millions of years ago trapped in sedimatary rock. A fossil could be any of these things
 * Actual remains of an organism (e.g. a mammoth inside ice, or a insect trapped in amber.)
 * Hard parts of an organism (Such as shells, teeth and bone)
 * Impressions of an organism (Acast made over an organism which then rotted away, which is filled with sediment that hardens inside of it.
 * Evidence of the presence of an organism (Such as a footprint marking)

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