Mold Fossil - Type of fossil that forms when sediments bury an organism and the sediments change 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., Carbonized Fossil - Type of fossil that forms when organisms or parts, like leaves, stems, flowers, fish, are pressed between layers of soft mud or clay that hardens squeezing almost all the decaying organism away leaving the carbon imprint in the rock., Trace Fossil - Type of fossil that forms when the mud or sand hardens to stone where a footprint, trail, or burrow of an organism was left behind., Relative Age - A term to compare the age of one object to the age of another object, Law of Superposition - A law which states that each rock is older than the one above it, Trilobite - A key example of an index fossil, Sedimentary Rocks - Where most fossils are formed, Relative Age DOES NOT Tell - The exact age of an object, Rock, Ice, Tar or Amber - A preserved fossil forms when an entire organism or a part of an organism gets trapped in these, Petrified Fossil (Permineralized Fossil) - Type of fossil that forms when minerals soak into the buried remains, replacing the remains, and changing them into rock., The Fossil Record - Gives important information about past life and environments on Earth,

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