Clue: Extensive period
We have 1 possible answer for the clue Extensive period which appears 2 times in our database.
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Related Clues:
- Phanerozoic ___ (current period in the earth's history)
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- Massive span
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- Collection of eras
- Long unit of time
- Word that's sometimes an exaggeration
- Geologist’s time unit
- Mighty long stretch
- A billion years, as a unit
- Geological time measure
- Time period hidden in "Come on, man!"
- Geological span of 1 billion years