Study tracks elephant tusks from 16th century shipwreck
CHAMPAIGN, Ill. In 1533, the Bom Jesus - a Portuguese trading vessel carrying 40 tons of cargo including gold, silver, copper and more than 100 elephant tusks - sank off the coast of Africa near present-day Namibia. The wreck was found in 2008, and scientists say they now have determined the source of much of the ivory recovered from the ship.
Their study, reported in the journal Current Biology, used various techniques, including a genomic analysis of DNA extracted from the well-preserved tusks, to determine the species of elephants, their geographic origins and the types of landscapes they lived in before they were killed for their tusks.