قطعة أخرى لحل لغز نشوء الرئيسيات بما يتعلق بنظرية التطور

A new primate fossil from Saudi Arabia could bring us one step closer to dating the divergence between apes (including humans) and Old World monkeys. Read the original research at:
http://dx.doi.org/10.1038/nature09094
and find more science from the Arab world at Nature Middle East:
http://www.nature.com/nmiddleeast/index.html