Related Clues:

• It's quite a stretch
• Oodles of time
• Incredibly long time
• Proterozoic or Archeozoic, e.g.
• Period of many years
• Extremely long time
• ''___ Flux'' (classic cartoon)
• String of periods
• ... and another
• Very, very long time
• Waiting time at the motor vehicle bureau, seemingly
• Considerable stretch
• A looooong time
• Forever, facetiously
• Geological time division (Var.)