Produced by the American companies Amblin Entertainment and Lucasfilm, and the American-Irish Sullivan Bluth Ltd., it features dinosaurs living in the prehistoric times. The plot concerns a young "Longneck" ("Apatosaurus") named Littlefoot, who is orphaned when his mother is killed by a vicious carnivore. 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 the "Threehorn" ("Triceratops"), Ducky the "Bigmouth" ("Saurolophus"), Petrie the "Flyer" ("Pteranodon"), and Spike the "Spiketail" ("Stegosaurus").