Create a timeline using the terms below of some of the most important events in the history of this planet. Start your timeline at 5 BILLION years ago and end it at today’s date.

For each event place it in the proper place on your timeline and include the estimated date on which it occurred. Along with placing the event on your timeline include a brief description of what the event is.

For 10 bonus points construct a timeline before looking up any of the information based on your own prior knowledge/educated guesses. Compare your first timeline with your second timeline and see how you did.

  1. Multicellular eukaryotes
  2. Tetrapods
  3. Formation of the Moon
  4. Dinosaurs go extinct
  5. Extinction of the dinosaurs
  6. Rise in atmospheric oxygen
  7. Formation of Earth
  8. Echinoderms
  9. Cretaceous extinction
  10. Holocene extinction
  11. Mammals
  12. Homo sapiens
  13. Insects
  14. Devonian extinction
  15. Cambrian explosion
  16. Triassic extinction
  17. Angiosperms
  18. Gymnosperms
  19. Birds
  20. First snowball earth

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