Which EON lasted the longest?

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Tags

  1. #three
  2. #often
  3. #usage
  4. #beginning
  5. #recognized
  6. #geologic
  7. #cambrian
  8. #period
  9. #proterozoic
  10. #second
  11. #present
  12. #refers
  13. #formal
  14. #billion
  15. #years
  16. #portions
  17. #archean
  18. #phanerozoic
  19. #longest
  20. #dating
  21. #formally