Brachiosaurus Elmer, a herbivorous dinosaur of the late Jurassic period, was a magnificent creature that roamed the ancient land. Known for its towering height, long neck, and small head, this gentle giant was one of the largest land animals to have ever existed. Its name, Brachiosaurus, meaning arm reptile, refers to its long forelimbs. Elmer, on the other hand, is a tribute to the paleontologist Elmer S. Riggs, who unearthed and described the first fossils of this remarkable species.