Genshi Shounen Ryuu
The story is set in prehistoric times, where humans coexist with dinosaurs. One day, a baby named Ryuu is born into the world. Since Ryuu has white skin, which is different from the rest of his tribe, the tribe elder accuses his mother of breaking the divine law. Consequently, the tribesmen separate Ryuu from his mother and leave him on a rock as a sacrifice to a terrible Tyrannosaurus named Tyran...