Related Clues:

• Type of station
• Period piece?
• Krypton, for one
• Motoring must
• Important historic period
• Geological time period
• Important time span
• Near eternity
• See 25-Down
• Archeozoic, e.g.
• Depression, for one
• 1970's-80's cause, for short
• Ages upon ages
• Range fuel
• Gay 90's, e.g.