fossils

Remnants of ancient life.

Fossils help us piece together the history of life on earth. They can be whole organisms, shells, bones, imprints, or traces

Types of fossils

• Petrified -

  minerals replace original material

• Mold -

  imprint of organism in rock

• Cast -

  minerals fill the mold

• Trace -

  tracks, burrowsm or other activity

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