The Land Before Time is a 1988 American animated film directed by Don Bluth (with production based around his Ireland-based studio), and executive-produced by Steven Spielberg and George Lucas. The plot concerns a young Longneck (Apatosaurus) named Littlefoot, voiced by Gabriel Damon, who is orphaned when his mother is killed by a Sharptooth (Tyrannosaurus). Littlefoot flees famine and upheaval to search for the "Great Valley", an area which has been spared devastation. On his journey, he meets four young companions: Cera, a Three-Horn (Triceratops); Ducky, a Swimmer (Saurolophus); Petrie, a Flyer (Pterodactyl); and Spike, a Spike-Tail (Stegosaurus). The film explores issues of prejudice between the different species and the hardships they endure in their journey as they are guided by the spirit of Littlefoot's mother.