Distribution of Drills

This distribution map includes specimens that might be classified as drills, awls, gravers, reamers, or burins. Specimens may be broken or whole. Most specimens are bifacial or unifacially flaked, but a few are utilized flakes showing use wear on a projection.本分布图谱涵盖了可被归类为钻器（drills）、锥器（awls）、雕刻器（gravers）、扩孔器（reamers）以及尖状雕刻器（burins）的考古标本。标本可分为残损与完整两种状态。绝大多数标本为双面打制或单面打制的石片制品，其中少数为在突出部位带有使用痕迹的使用石片。