In the late Cretaceous period of Earth's history, iguanodon Aladar (voiced by D.B. Sweeney) is separated from his own species while still inside his egg. He is taken in and brought up by lemurs Zini and Plio, but when this adoptive family is all by wiped out by a meteor shower, Aladar and his friends are forced to join a mixed herd of dinosaurs who are migrating to a new nesting ground. This tribe is led by the hard-headed Kron (Samuel E. Wright), whose 'survival of the fittest' approach clashes with Aladar's more altruistic nature.
Voice: Samuel E. Wright
Voice: Joan Plowright
Voice: Della Reese
Voice: Max Casella
Music: James Newton Howard
Writer: Walon Green
Voice: Julianna Margulies
Voice: Sandina Bailo-Lape
Writer: Robert Nelson Jacobs
Voice: Hayden Panettiere
Voice: Ossie Davis
Writer: John Harrison
Director: Ralph Zondag
Director: Eric Leighton
Producer: Pam Marsden
Voice: Peter Siragusa
Voice: D.B. Sweeney
Animator: Walt Disney Studios
Voice: Alfre Woodard
Voice: Matt Adler