Sources

Scientific Paper

  •  Shen, G., et al. "Age of Zhoukoudian Homo erectus determined with 26Al/10Be burial dating." Nature (March 12, 2009).

Images

  •  1937 Zhoukoudian dig site (AMNH Library)
  •  Peking man skull reconstruction: front view (Reconstruction by Ian Tattersall and Gary Sawyer, AMNH. Photo by Roderick Mickens)
  •  Peking man skull reconstruction: side view (Reconstruction by Ian Tattersall and Gary Sawyer, AMNH. Photo courtesy of Russell Ciochon, University of Iowa)