In late 2013, palaeontologists in Patagonia, Argentina made an exciting discovery. Now, more than six years of careful work later, their discovery has finally been unveiled to the world: Bajadasaurus pronuspinax, a new species of dinosaur that lived approximately 140 million years ago. From the fossil evidence uncovered, it is believed that Bajadasaurus was a sauropod (the family of dinosaurs with long necks and long tails) with a very distinctive feature: A row of fearsome-looking spikes running down its spine that probably served as a deterrent to predators. This image is an artists impression of what Bajadasaurus may have looked like. You can read a longer article here.