Ancient Bones Belonged to a Man -- Probably By Steve Chawkins, Times Staff Writer September 11, 2006 By the time you reach 13,000 or so, you'd figure that the people closest to you would know some fundamental personal details — like your sex. But consider the plight of the oldest person yet found in North America.All that remains of him — or is it her? — are a couple of thigh bones, which were discovered on Santa Rosa Island in 1959. At the time, scientists thought they belonged to a man of a certain age — perhaps 10,000. The bones...