Late Jurassic (145 million years ago)
Western North America
59 - 69 ft long, 31 - 43 ft tall
Brachiosaurus was the tallest of all the dinosaurs. It could have looked though a window on the fifth floor of a building. This plant eater fed high up in the trees where no other animal could reach. It belonged to the sauropod group of giant four legged plant eaters. Sauropods were the biggest and most successful of all dinosaurs around the world.