They unearthed an ANIMAL? I thought they were fossil hunters! And can anyone explain how fossils supposedly 13 million years old can show the posture of the original animal? I think the likely story is that they unearthed a fossil, and the rest is conjecture.
Animals that walk upright have very different skeletons from animals that walk on all fours.
So... You're saying that they might have found a fossil that was never at one time an animal? Fascinating...