Dinosaurs; Block of 4 United States, 1989

Issued by the United States on October 1, 1989, this colorful set of four mint stamps features the prehistoric beasts Tyrannosaurus, Pteranodon, Stegosaurus, and Apatosaurus ("Brotosaurus"). For the U.S. Postal Service, this issue served as a promotional tie-in with the videocassette release of the movie, "The Land Before Time." The block of four stamps measures 63.5mm x 81mm.