A new dinosaur species, notable for a row of two-foot spines protruding from its neck, has been discovered by scientists in Argentina. Scientists have dubbed the new dinosaur, “Bajadasaurus,” an herbivore that lived 140 million years ago, according to the scientific journal Nature, which first revealed the findings. Its name is an amalgam of Spanish, Greek, and Latin, meaning “lizard from Bajada with forward-bending spines.” The dinosaur's unusual "spines" have fueled a wave of speculation about what purpose they may have served. Pablo Gallina, a paleontologist who first came across a set of its teeth in 2010, said the “long and sharp...