Season 3, Episode 28 Tri-Stone Area

First Aired: January 13, 2012

Phineas and Ferb find themselves in the Stone Age as cavemen and try to invent the wheel.

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  • Premiered: August 17, 2007
  • Rating: None
  • Premise: Animated adventures of two stepbrothers who build outlandish inventions in their backyard while their pet platypus, Perry, carries out secret spy missions. (more)

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