Archaeologists announced Thursday they have uncovered the tomb of a very early Mayan ruler, complete with rich jade jewelry and decoration. Experts said the find at Guatemala's Tak'alik Ab'aj temple site could help shed light on the formative years of the Mayan culture. Government archaeologist Miguel Orrego said carbon-dating indicates the tomb was built between 700 and 400 B.C., several hundred years before the Mayan culture reached its height. He said it was the oldest tomb found so far at Tak'alik Ab'aj, a site in southern Guatemala that dates back about 2,200 years. Orrego said a necklace depicting a vulture-headed...