And there's one final clue... A clue that all but definitively connects birds and dinosaurs, and it's something you'd least expect... Something scientists call the furcula. Or wishbone.

还有一个终极线索...能够充分证明鸟类和恐爪龙的联系，这也是最让人感到意外的...科学家称之为叉突。或是叉骨。