Smithsonian Institution Photographic Services, National Museum of Natural History, Jurassic Dinosaurs, Allosaurus, Camptosaurus, Diplodocus, 1984 Smithsonian Institution.
Smithsonian Institution Photographic Services, National Museum of Natural History, Diplodocus, Sauropod Dinosaur (Plant-eater) lived about 135 million years ago, 1984 Smithsonian Institution.
Smithsonian Institution Photographic Services, National Museum of Natural History, Armored Dinosaur, Stegosaurus, plant-eater of the later Jurassic Period, 135 million years ago, 1984 Smithsonian Institution.
Smithsonian Institution Photographic Services, National Museum of Natural History, Triceratops, horned dinosaur of about 70 million years ago, one of many plant-eating dinosaurs, 1984 Smithsonian Institution.
