Fossil remains suggest Neanderthal and modern humans may have interbred in East Asia 100,000 years ago. This would put modern humans there 60,000 years earlier than previously thought. Other possibilities are that they interbred elsewhere and the resulting mixed species migrated or passed their genes through intermediate populations to East Asia.
Trinkaus and his team now believe that after anatomically modern humans first emerged in equatorial Africa, they either began to disperse into Asia 102,000 to 130,000 years ago, or gene flow through populations caused their biology to wind up in South China during the Late Pleistocene.
The fossils -- a chin and related teeth -- belonged to a modern human that also featured more robust Neanderthal-type characteristics...
The results have been published in the latest Proceedings of the Natural Academy of Sciences.