Related Clues:
- "___ Flux" (2005 movie)
- Many, many millennia
- Astronomical time period
- Lot of time
- Division of about one billion years
- Long long time
- Billion-year period
- A bazillion jillion years
- With 64-Across, 2005 Charlize Theron title role
- Lo-o-ng time (Var.)
- Indefinable time period
- Era upon era
- Largest geological division
- Indefinable time
- Vast time frame