One of the largest sauropods, 110-foot-(33-meter)-long Seismosaurus is known only from New Mexico. The tail of this giant plant eater was like a whip that could be used to defend against attacking predators.
Many people believe an entire skeleton can be reconstructed from a single bone. Not so! Paleontologists compare single bones or a few bones of a new dinosaur to the complete skeletons of similar dinosaurs to reconstruct a complete skeleton of the new dinosaur.