Anthropology......would be my best guess....

An Ancient Skull Challenges Long-Held Theories - The New York Times

https://www.nytimes.com/1999/10/.../an-ancient-skull-challenges-long-held-theories.htm...

Oct 26, 1999 - ... been identified by Brazilian scientists as oldest human remains ever ... South American Indian; photo of Dr Walter Neves with Luzia's skull (L)