Part of the femur of of a mamooth found in Venezuela, in Caracas on August, 30, 2013. Under the Venezuelan rich soil lies more than oil: paleontologists have found traces of an armadillo the size of a Volkswagen, a crocodile bigger than a bus, a mastodon of six tonnes and a saber-toothed tiger. Now, they walk after the human fossil. AFP PHOTO/JUAN BARRETO (Photo credit should read JUAN BARRETO/AFP/Getty Images)
