Diplodocus

Diplodocus was a giant herbivorous sauropod dinosaur, existing throughout much of the United States in the Late Jurassic, about 145 million years ago, It got nearly 90 feet long, and unlike some of its distant cousins like Brachiosaurus, was far longer than it was tall. We also know thanks to skin impressions that Diplodocus probably had large iguana like spikes running from its neck to its giant whip-like tail.