This undated picture released by Institute of Human Origins at Arizona State University shows part of the juvenile jawbone of the ancient human relative Australopithecus deyiremeda discovered in Afar Region, in Ethiopia, on the ground before being collected. Newly discovered fossils, including a jawbone with 12 teeth, prove that a mysterious foot found in Ethiopia in 2009 belongs to a little-known, recently named ancient human relative who lived alongside the species of the famous Lucy, scientists said on November 26, 2025. (Photo by Stephanie MELILLO / Institute of Human Origins at Arizona State University / AFP via Getty Images)