It's About Time!
S01E21 - Airdate: 2008-03-01
Runtime: 30 min
Phineas and Ferb find a time machine at a museum and travel back to the Jurassic Age. Meanwhile, Perry is sad when Doofenshmirtz replaces him with a new nemesis, Peter the Panda, so he confides in a relationship talk-show host.
Episode details and rating from TVmaze.