A new species of orangutan has been identified in
The Tapanuli orangutan, found only in upland forests in North Sumatra, differs from the other two species of orangutan in the shape of its skull and teeth, its genes, and in the way the males make long booming calls across the jungle, they said.
"The differences are very subtle, not easily observable to the naked eye," Prof. Michael Kruetzen of the University of Zurich, who is part of an international team, told Reuters.
