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:
- Long geological span
- Geologic time spans
- Interminable times
- Two or more eras, in geologic time
- Largest geologic time division
- Long time-
- Longest division of geologic time
- Gobs of time
- It takes forever
- '___ Flux'
- Unimaginably long time (Var.)
- Proterozoic, for one
- Vast time unit
- Unimaginably long stretches
- Largest division of geologic time