geologic time scale

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Across
  1. 3. started and ended in extinction but life flourished in the oceans during this time
  2. 4. Current era. During this era, the ice age happened
  3. 5. 90% of earth history the first cells came during this time
  4. 9. An eon, when there was no life and earth, was fire and lava. also the first eon
  5. 10. time period in an era
Down
  1. 1. The current eon
  2. 2. was the era that dinosaurs existed and ended in a mass extinction
  3. 6. the second eon
  4. 7. time period larger than an era
  5. 8. the period at the beginning of the paleozoic
  6. 11. a time period less than an eon but more than a period