Researchers have uncovered the fossils of one of the largest dinosaurs to ever walk on the Earth – remains which they believe could belong to a previously undiscovered species. Paleontologists digging near the city of Morella in eastern Spain discovered the remains of a gigantic dinosaur which would have measured a staggering 20-meters (65 ft) from head to tail. The team unearthed over 80 bones belonging to the same dinosaur, Spanish newspaper El Pais reports. Included in this haul were two femurs, a humerus, other parts of limbs and vertebrae from the tail of a sauropod dinosaur from the Early Cretaceous period. Sauropods were giant plant-eaters with a distinctive long neck. The largest animal to ever walk the Earth, the brachiosaurus, was a type of Sauropod. From studying the prehistoric remains, researchers were able to determine that the giant plant eater survived on the tender shoots of trees and also ate stones to aid digestion. One of the directors of the excavation, Jose