The use of shaped stone balls to extract marrow: a matter of skill?Experimental‐ traceological approach

Technological skills associated with the Paleolithic culture have been explored extensively in recent years, with regard to
the production of stone tools. Aspects of skill related to the use of these tools, however, have yet to be comprehensively
explored. In this paper, we use a combined experimental-traceological approach to explore aspects of skill in the use of Lower
Paleolithic (LP) shaped stone balls (SSBs) as percussion tools for marrow extraction. We examine the efect of skill, or lack
thereof, on the accumulation of distinctive use wear traces upon these implements, while also considering handling, grip,
and body posture of skilled versus unskilled participants in our experiment. In addition, we investigate possible indicative
morphologies attesting to skill level on the processed bones. The results show that the observed diferences in body posture,
gestures, tool gripping and handling of skilled versus unskilled individuals infuenced the intensity and dispersion of wear
traces on the tools. Moreover, diferences were also detected with regard to the processed bones. Thus, our study shows that
while we tend to think that bone-breaking is intuitive, it in fact requires planning, knowledge of bone anatomy and tool use,
as well as skill and experience. We hope that these experimental insights will ofer a better grounding for understanding
human skill and its visible expression on material culture.