Chipped stone tools termed perforators and gravers are characterized by projections. Although the implied function of these tool types differs, there are no guidelines for classifying perforators and gravers based on their morphology. Consequently, researchers classify these tools differently, which precludes meaningful comparisons of the frequencies of these types between assemblages. A use-wear study confirmed the hypothesis that specimens with a thin projection and a sharp distal angle often had perforation use wear. Specimens with graver use wear were characterized by a range of projection perimeters and distal angles. We recommend that specimens with a projection perimeter of 20 mm or less and a distal angle of 40 degrees or less be classified as perforators and those with greater dimensions as gravers. This will achieve a consistent classification system for perforators and gravers, although it must be recognized that these type names may not be indicative of the function of individual specimens.

被称为穿孔器和刻刀的碎石工具以突起为特征。尽管这些工具类型的隐含功能不同，但没有根据形态对穿孔器和刻刀进行分类的指南。因此，研究人员对这些工具的分类方式不同，这排除了对组合之间这些类型的频率进行有意义的比较。一项使用磨损研究证实了这样一个假设，即具有薄突起和尖远端角度的标本通常具有穿孔使用磨损。使用磨损较严重的标本具有一系列凸起周长和远端角度的特征。我们建议将投影周长为 20 毫米或更小、远端角度为 40 度或更小的标本归类为穿支器，将尺寸较大的标本归类为雕刻器。这将为穿孔器和雕刻器实现一致的分类系统，尽管必须认识到这些类型名称可能无法表示单个标本的功能。