Of the few skulls/skeletons found which have been claimed as proof of human evolution none have passed the test of reasonable doubt. Many have been found to be non-human. One formed by extrapolation was later proved to have been extrapolated from a pig tooth. Those which were found to be human are more readily identified as humans with bone diseases but fully human (Homo Erectus). Look around, most of these “missing link" skulls are walking the streets of America today, though they are more prevalent in third world countries.