Last seen in:
- Wall Street Journal - Dec 7 2021 - Get Cracking
- Universal - Oct 6 2021
- New York Times - Nov 11 2018
- Premier Sunday - King Feature Syndicate - Nov 2 2014
- New York Times - Sep 30 2012
- Universal - Aug 17 2012
- Thomas Joseph - King Feature Syndicate - Jul 26 2012
- USA Today - Dec 10 2011
- Thomas Joseph - King Feature Syndicate - May 21 2011
- Premier Sunday - King Feature Syndicate - Nov 21 2010
Related Clues:
- Billions of years, geologically
- Its make-up is many years
- What a waiting time may seem
- Mighty long time
- Quite a spell
- One billion years, in astronomy
- Long stretches
- Group of eras
- Grows up
- Consent and Reason, e.g.
- Golden and Bronze
- Series of periods
- Period between blue moons
- Vast time period
- Geologic division