Raw material sources, Middle vs. Upper Paleolithic. The big difference in the distances over which raw materials were obtained comes with the Uper Palaeolithic when shells, amber, and other items were widely traded. (Original teaching slide code: PM-37)
Pliopithecus: One of the earliest proto-apes, Pliopithecus had the look of a modern gibbon although its arms were not as disproportionately long and specialized for swinging through the trees. On the basis of its teeth and skull it is now classed as an ancestor of the gibbon line.
Oreopithecus: A likely sidebranch on man's family tree, Oreopithecus is believed t ohave stood around four feet tall and weighed about 80 pounds. Its teeth and pelvis led scientists to wonder if it could be ancestral to man, but apparently it became extinct some 8 million years ago.