Welcome to Brachiosaurus, Brontosaurus and Diplodocus coloring pages ! Brachiosaurus lived during the Late Jurassic Period and possibly the Early Cretaceous Period. It was named thus because its forelimbs were longer than its hind limbs. One of the largest animals known to have walked the earth, it has become one of the most famous of all dinosaurs and is widely recognized worldwide. Brontosaurus lived about 150 million years ago, during the Jurassic Period. It was one of the largest land animals that ever existed, with an average length of 23 meters. Diplodocus lived in what is now western North America at the end of the Jurassic Period. Diplodocus is among the most easily identifiable dinosaurs, with its classic dinosaur shape, long neck and tail and four sturdy legs. Enjoy your Dinosaur coloring pages on Hellokids.com !