Filipino archeologist Armand Mijares shows a molar tooth as part of the set of fossils of a newly discovered human species called Homo luzonensis at the University of the Philippines in Quezon City, the Philippines, April 11, 2019. Found in Callao Cave on Luzon Island, the 50,000-year-old remains belong to a now extinct species of human. (Xinhua/Rouelle Umali)