Clue: Billion-year span
We have 1 possible answer for the clue Billion-year span which appears 4 times in our database.
Possible Answers:
Related Clues:
- Near-infinite time span
- Very long Supergrass song?
- Awfully long stretch
- Phanerozoic, for one
- Individual bringing up rear for a very long time!
- Great spell
- Interminable wait
- Really big stretch
- A thousand million years
- Very long spell
- Extended stretch
- 365 billion days
- Billion years, in astronomy
- Period of unspecified duration
- Length of a long wait, in hyperbole