Related Clues:
- A lot of time that's added for extended lunch
- Swine leaves birds for ages
- Geological time unit
- Geochronological span
- Century upon century
- Extended period of time
- 100,000,000 decades
- Hyperbolic stretches of time
- Many millennia make one
- Frustrating waiting time, facetiously
- Very long period (US and technical spelling)
- Very long span
- We live in the Phanerozoic
- Vast stretches of time
- Fathomless time