Related Clues:

• Historic period
• Chapter in history
• Billion years, to a geologist
• It seems like forever
• Stat that's good when under 3.00
• Big time?
• ''The Big Band,'' for one
• Historical time
• Pitching stat
• Geological stretch
• Timeline segment
• Stat. for Greg Maddux
• Hurler's stat
• Very long time
• Forever and a day