Cone of percussion: (a-d) Theoretical stages in the fracture. (e) A flake removed with incomplete conical fracture. (f) An actual cone preserved intact. (i.e. corresponding to d).
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
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 exti
Dryopithecus: Though its skeleton is tantalizingly incomplete, Dryopithecus can be fairly described from a few jaws and teeth. First of the fossil great apes to be discovered, it was widely distributed; remains have been unearthed throughout Europe, in N
