CambrianExplosion544 m.y.aOldestRocks??? b.y.aOldestTrilobitesMesozoicPeriod4.6b.y.aPhanerozoic544 m.y.ato 251m.y.aAge ofoldestrocks2.4m.y.ahumansPermianExtinctionEonCenozoicSedimentaryRock FirstFormationBeforeLifeDensityZones4.6 b.y.ato 544m.y.aPaleozoic65 m.y.aextinctionProduct ofPhotosynthesis65 m.y.atopresentOutgassingPrecambrianEraCausesiron torustHeatstheEarth2.8billion topresentFREE!CambrianExplosion544 m.y.aOldestRocks??? b.y.aOldestTrilobitesMesozoicPeriod4.6b.y.aPhanerozoic544 m.y.ato 251m.y.aAge ofoldestrocks2.4m.y.ahumansPermianExtinctionEonCenozoicSedimentaryRock FirstFormationBeforeLifeDensityZones4.6 b.y.ato 544m.y.aPaleozoic65 m.y.aextinctionProduct ofPhotosynthesis65 m.y.atopresentOutgassingPrecambrianEraCausesiron torustHeatstheEarth2.8billion topresentFREE!

Geologic Time - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. Cambrian Explosion 544 m.y.a
  2. Oldest Rocks ??? b.y.a
  3. Oldest Trilobites
  4. Mesozoic
  5. Period
  6. 4.6 b.y.a
  7. Phanerozoic
  8. 544 m.y.a to 251 m.y.a
  9. Age of oldest rocks
  10. 2.4 m.y.a humans
  11. Permian Extinction
  12. Eon
  13. Cenozoic
  14. Sedimentary Rock First Formation
  15. Before Life
  16. Density Zones
  17. 4.6 b.y.a to 544 m.y.a
  18. Paleozoic
  19. 65 m.y.a extinction
  20. Product of Photosynthesis
  21. 65 m.y.a to present
  22. Outgassing
  23. Precambrian
  24. Era
  25. Causes iron to rust
  26. Heats the Earth
  27. 2.8 billion to present
  28. FREE!