Keywords: dinosaurs nature exhibits smithsonian probably public domain probablypublicdomain animal SI Neg. 77-8094. Date: 1977...Stegasaurus, Dinosaur Hall, National Museum of Natural History ..Credit: Dane A. Penland (Smithsonian Institution) SI Neg. 77-8094. Date: 1977...Stegasaurus, Dinosaur Hall, National Museum of Natural History ..Credit: Dane A. Penland (Smithsonian Institution) |