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:
- 365 billion days, geologically
- Big stretch?
- Long geological span
- Two or more eras, in geologic time
- Largest geologic time division
- Long time-
- Longest division of geologic time
- It takes forever
- Proterozoic, for one
- Vast time unit
- Largest division of geologic time
- Long stretch of history
- Centuries on end
- Long time, even in the singular
- Quite a span