Last seen in:
- Wall Street Journal - Oct 10 2015 - October 10, 2015 - B & B's
- Wall Street Journal - Feb 27 2015 - February 27, 2015 - Positive Reinforcement
- Wall Street Journal - Mar 28 2014 - March 28, 2014 - Sloganeering
- Wall Street Journal - Sep 6 2013 - September 6, 2013 - Academia Nuts
- Wall Street Journal - Apr 23 2010 - April 23, 2010 - Presented in 3-D
- Universal - Jul 19 2009
- Wall Street Journal - Dec 8 2006 - December 8, 2006 - Caveat Emptor
- New York Times - Dec 1 2005
Related Clues:
- Video game __ Flux
- The Phanerozoic, e.g.
- Near-infinite timespans
- Lengthy units of time
- See 41 Down
- Era after era
- It's split into eras
- Incalculable amounts of time
- Stellar periods
- Very long time unit
- Long, long periods
- Quite a long time
- It's longer than an era
- Big time division
- How long it takes canyons to form