Researchers discovered a 3.5 million year-old jawbone in Ethiopia that is believed to belong to a new species of hominin. Though there were other ancient humans that existed contemporary to the jawbone, lead researcher Dr. Yohannes Haile-Selassie explained to BBC News that, after a comparison of other jawbones discovered at the time, this could be a new species. “We had to look at the detailed anatomy and morphology of the teeth and the upper and lower jaws, and we found major differences,” the researcher said. “This new species has very robust jaws. In addition, we see this new species had smaller teeth. The canine is really small—smaller than all known hominins we have documented in the past.” The new species is named Australopithecus deyiremeda.