Fossil - The preserved remains or traces of an organism that lived in the past, usually more than 10,000 years ago,, Mold fossil - Type of fossil that forms when sediments bury an organism and the sediments change into rock., petrified fossil  - Type of fossil that forms when minerals soak into the buried remains, replacing the remains, and changing them into rock., preserved fossil  - Type of fossil that forms when entire organisms or parts of organisms are prevented from decaying by being trapped in rock, ice, tar, or amber,

fossils

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