Last seen in:
- L.A. Times Daily - Aug 7 2024
- L.A. Times Daily - Oct 3 2022
- L.A. Times Daily - Mar 5 2022
- The Washington Post - Mar 5 2022
- USA Today - Mar 17 2021
- Premier Sunday - King Feature Syndicate - Aug 9 2020
- New York Times - Sep 15 2019
- Universal - Aug 29 2017
- L.A. Times Daily - Jul 3 2015
- L.A. Times Daily - Mar 9 2011
Related Clues:
- Untold millennia
- Geological time periods
- 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
- With 37-Down, way back when
- Incalculable amounts of time
- Stellar periods
- Very long time unit
- Long, long periods
- It's longer than an era