Related Clues:
- Huge time span
- Long division?
- Vast stretch
- Plenty of time?
- Many, many centuries
- Nearly forever
- Long geologic time division
- Yellows, or mellows
- Nearly infinite perioD
- A gazillion years, seemingly
- Seemingly endless time
- Many a doctor's office wait, seemingly
- Yellows or grays, say
- Billion-year span
- Times and Guardian editors selected leaders therefrom