Article: At 400,000 Years, Oldest Human DNA Yet Found Raises New Mysteries

At 400,000 Years, Oldest Human DNA Yet Found Raises New Mysteries
http://www.nytimes.com/2013/12/05/science/at-400000-years-oldest-human-dna-yet-found-raises-new-mysteries.html

2013 was packed with many new genetic findings shedding light on human prehistory.  The more studies that come out, the greater the complexity that is emerging.  For example, the genes of this person from 400,000 years ago in Spain were expected to be similar to Neanderthals and likely from the population ancestral to Neanderthals.  Lo and behold, the genome is more similar to the mysterious Denisovans who have thus far only been found in western Asia.  It may well be this person belonged to a population ancestral to both Denisovans and Neanderthals.