An orphaned brontosaurus named Littlefoot sets off in search of the legendary Great Valley. A land of lush vegetation where the dinosaurs can thrive and live in peace. Along the way he meets four other young dinosaurs, each one a different species, and they encounter several obstacles as they learn to work together in order to survive.
| Actor | Role |
|---|---|
 Gabriel DamonLittlefoot (voice) | Littlefoot (voice) |
 Candace HutsonCera (voice) | Cera (voice) |
 Will RyanPetrie (voice) | Petrie (voice) |
 Judith BarsiDucky (voice) | Ducky (voice) |
 Helen ShaverLittlefoot's Mother (voice) | Littlefoot's Mother (voice) |
 Pat HingleNarrator / Rooter (voice) | Narrator / Rooter (voice) |
 Bill ErwinGrandfather (voice) | Grandfather (voice) |
 Burke ByrnesDaddy Topps (voice) | Daddy Topps (voice) |
 Frank WelkerSharptooth (voice) (uncredited) | Sharptooth (voice) (uncredited) |