A human jaw is shown by Concepcion Gimenez, physical anthropologist and academic responsible of the 'Osteoteca' (osteological collection), at the Anthropology National Museum (MNA), in Mexico City, March 9, 2018. The MNA houses one of the most important osteological collections in the world, with more than 25,000 skeletons, and more than 30 mummies. (Photo/Agencies)
