realistic copy of brachiosaurus, is a genus of sauropod dinosaur that lived in north america during the late jurassic, about 154

154153 ago altithorax america ancient animal background big brachiosaurus brontosaurus copy creature dinosaur dinosaurs environment extinct extinction forest genus herbivore herbivorous history jurassic large late lived lizard long million model monster natural nature north paleontology park plant prehistoric primitive realistic reptile sauropod sauropods scene science silhouette summer teeth that theme tree vertebrate years