Researchers in Spain have discovered mysterious fossilized facial fragments that belonged to an unknown early human species. The bones are the oldest human fossils discovered in Western Europe, according to a study published this week in the journal Nature.

The research team at the Atapuerca archaeological sites in Burgos, Spain, has just broken its own record by discovering, for the third time, the oldest human in Western Europe.

In the mountains of Atapuerca, Spain, fragments of a 1.4-million-year-old skull have been discovered. These bones, nicknamed Pink (in reference to Pink Floyd's album "The Dark Side of the