Small protrusions ( or " tongues " ) of radiolucency often extend from the metaphyses into the bone shaft.
2.
Use of bone tools by hominins also producing Oldowan tools is known from Swartkrans, where a bone shaft with a polished point was discovered in Member ( layer ) I, dated 1.8 1.5 mya.
3.
Excavations at Devil's Lair have yielded early human ornaments in the form of three ground bone beads dating to 19, 000 12, 700 years BP . These beads were made from the limb-bones of macropods and were manufactured by cutting the bone shafts into short segments and grinding them smooth on abrasive stone.
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