Last seen in:
- Wall Street Journal - Oct 5 2019 - Played Out
- L.A. Times Daily - Dec 22 2017
- The Washington Post - Dec 22 2017
- The Telegraph - QUICK CROSSWORD NO: 28,222 - Sep 17 2016
- New York Times - Mar 6 2016
- New York Times - Dec 7 2014
- L.A. Times Daily - May 3 2009
- L.A. Times Daily - Jul 24 2008
- USA Today - Aug 23 2004
Related Clues:
- Proterozoic, for one
- Vast time unit
- D_ting concerns
- Unimaginably long stretches
- Improves, as wine
- Turns yellow or mellow
- Largest division of geologic time
- Earth's age, perhaps
- Geologic procession
- Long stretch of history
- Centuries on end
- Becomes less green
- Long time, even in the singular
- Quite a span
- Sits in a wine cellar