Last seen in:
- The Washington Post - Jan 3 2022
- L.A. Times Daily - Jan 3 2022
- The Guardian - Quick crossword No 16,051 - Oct 16 2021
- Newsday.com - Oct 18 2017
- BuzzFeed - Mar 31 2016
- Premier Sunday - King Feature Syndicate - Feb 7 2016
- L.A. Times Daily - Oct 14 2013
- L.A. Times Daily - Nov 8 2012
- Newsday.com - Oct 13 2011
- USA Today - Dec 22 2010
Related Clues:
- "-zoic" things
- Historical episodes
- Geologic time divisions
- Time-line divisions
- Geologic succession
- Long reigns, e.g.
- Prominent periods of history
- Distinctive periods of history
- The Wild West, etc.
- They may be geological
- Pitchers want low ones
- Numbers for closers
- Remarkable period of time
- Periods, ages
- Vast periods of time