The Land Before Time is a 1988 Irish-American animated adventure film directed and co-produced by Don Bluth (at Sullivan Bluth Studios), and executive-produced by Steven Spielberg, George Lucas, Kathleen Kennedy, and Frank Marshall.
Originally released by Universal Pictures and Spielberg's Amblin Entertainment, it features anthropomorphic dinosaurs living in the prehistoric times. The plot concerns a young Apatosaurus named Littlefoot who is orphaned when his mother is killed by a Tyrannosaurus. Littlefoot flees famine and upheaval to search for the Great Valley, an area spared from devastation. On his journey, he meets four young companions: Cera, a Triceratops; Ducky, a Saurolophus; Petrie, a Pteranodon; and Spike, a Stegosaurus.