Related Clues:
- Divisions of history
- The Cenozoic and others
- Geologic divisions
- Spring training stats
- Archeozoic and Cenozoic
- Records of events
- Eventful times in history
- Accentuated periods
- Parts of timelines
- Ballpark figures?
- Major time periods
- Distinct time spans
- Geological epochs
- President's tenures, so to speak
- Significant periods of history