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Fossil discoveries in southern China point to an evolutionary crossroads around 34 million years ago that resulted in humans evolving in Africa rather than Asia, cheap jordans online , scientists say. A sharply cooler and drier climate at that time, combined with upheavals of landmasses that forged the Himalayas and the Tibetan Plateau, cheap real jordans , destroyed many tropical forests in Asia. That sent surviving primates scurrying south, cheap wholesale jordans , say paleontologist Xijun Ni of the Chinese Academy of Sciences in Beijing and his colleagues. New Chinese finds provide the first fossil evidence that the forerunners of monkeys, cheap Authentic jordans , apes and humans, cheap air jordans , also known as anthropoids, cheap jordans , were then largely replaced in Asia by creatures related to modern lemurs, lorises and tarsiers, cheap retro jordans , the researchers conclude in the May 6 Science. Ni’s team regards Asia as the evolutionary launching pad for primates, including anthropoids. But considerable debate and uncertainty surrounds primates’ geographic origins. “The focal point of anthropoid evolution shifted at some point from Asia to Africa, cheap jordans free shipping , but we didn’t understand when and why the shift occurred until now,” says paleontologist and study coauthor K. Christopher Beard of the University of Kansas in Lawrence. But the scarcity of Asian primate fossils from that time relative to those from Africa leaves the matter unsettled. Egyptian sites in particular have yielded numerous primate fossils dating from around 37 million to 30 million years ago. Excavations http://southbitch.free...amp;topic=7069&page=1 http://users.atw.hu/co...rum_topic&topic=12684 http://www.midwestartfairs.com/node/add/article |