Dihedral Burin
Working bone and plant materials
Upper Palaeolithic,
44 000 to 14 000 years
The first removal serves as the striking platform for the second, which creates a dihedral angle with the first.
J. Tixier, Typologie de l’Epipaléolithique du Maghreb. Mémoire du C.R.A.P.E, Alger, 1963.
Commentary :
The dihedral burin takes its name from the active part of the tool which resembles a dihedral bevel.
Regardless of its shape or size, the tool functions like a sculptor or carpenter's chisel by removing material to make a channel or deepen a groove.
Although appearing sporadically in earlier periods, the dihedral burin becomes more common in the Upper Palaeolithic, which seems to be linked to the increased use of bone and plant materials.