Keywords: nature animals dinosaurs fossils smithsonian probably public domain probablypublicdomain indoor SI Neg. 95-9609. Date: 1995...Skull of a duck-billed dinosaur, late cretaceous period, flourished between 80 million and 65 million years ago (cast from an original skeleton). ..Credit: Laurie Minor-Penland (Smithsonian Institution) SI Neg. 95-9609. Date: 1995...Skull of a duck-billed dinosaur, late cretaceous period, flourished between 80 million and 65 million years ago (cast from an original skeleton). ..Credit: Laurie Minor-Penland (Smithsonian Institution) |