Clue: Lengthy time unit
We have 1 possible answer for the clue Lengthy time unit which appears 1 time in our database.
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Related Clues:
- 1,000,000,000 years
- One billion years, in geologic time
- Waiting period, it sometimes seems
- Division of geological time
- Long geological period
- An age
- It keeps going and going ...
- Many many years
- A million millennia
- Untold millennia
- The Phanerozoic, e.g.
- See 41 Down
- Era after era
- It's split into eras
- Quite a long time