Fossils

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Across
  1. 1. consist of the marks left behind by the organism while it was alive
  2. 4. T-Rex skeleton
  3. 7. a process of fossilization that occurs when an organism is burieda process of fossilization that occurs when an organism is buried
  4. 9. Minerals precipitate from the ___________
  5. 11. all discovered and undiscovered fossils and their placement in rock formations and sedimentary layers
  6. 12. hard body parts, such as shells, __________ or teeth
  7. 13. other term for trace fossils
  8. 14. Layers of sedimentary rock
Down
  1. 2. Containing fossils
  2. 3. determine the age of fossils
  3. 5. substance used as an indicator of a biological state
  4. 6. can be detected in the form of biochemical signals
  5. 8. used to determine the age of fossils
  6. 10. type of fossil reflecting the reworking of sediments and hard substrates