FILE - In this Jan. 8, 2003 file photo, a reconstructed Neanderthal skeleton, right, and a modern human version of a skeleton are on display at the Museum of Natural History in New York

 

              FILE - In this Jan. 8, 2003 file photo, a reconstructed Neanderthal skeleton, right, and a modern human version of a skeleton are on display at the Museum of Natural History in New York
FILE - In this Jan. 8, 2003 file photo, a reconstructed Neanderthal skeleton, right, and a modern human version of a skeleton are on display at the Museum of Natural History in New York. Theories about when the last Neanderthals walked the Earth may have to be revised, according to a study published Monday, Feb. 4, 2013 that suggests they became extinct in their last refuge in Spain much earlier than previously thought. (AP Photo/Frank Franklin II, File)