Geologic Time

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Across
  1. 3. Known as the "Age of Early Life"
  2. 4. Period of time the Earth is currently in.
  3. 5. Name of the crater where the asteroid that struck that killed the dinosaurs.
Down
  1. 1. This is the Age of Reptiles.
  2. 2. The greatest extinction time happened during this time.
  3. 3. Supper Continent