MyLibraryZotero17Serwatka, KamilLitikum – Journal of the Lithic Research RoundtableLitikum – Journal of the Lithic Research RoundtableLitikum13-253201520152064-3640https://doi.org/10.23898/litikuma0009Nowadays, geometric morphometrics are being widely implemented in lithic studies. Their application is driven by the powerful methods of data analysis off ered by morphometric computer software. Additionally, computer programs for digital shape analysis are freeware and easy to handle, even for a non-morphometrician. The results achieved with this software yield interesting conclusions and they off er a new perspective on lithic tools. This presents morphometrics as a potentially useful methodological tool in the fi eld of lithic analysis, which often has to deal with artifacts morphology. The aim of this study is to test the utility of basic shape analyses included in the PAST (Palaeontological Statistics) computer program, and especially elliptical Fourier analysis, in identifying reduction eff ects on Late Middle Palaeolithic bifacial tools. For this purpose, an assemblage of 147 bifacial tools from Southern Poland was analyzed. The sample comprised of Keilmessergruppen handaxes, Keilmesser and Late Middle Palaeolithic leaf points. The results reveal patterned changes in artifacts proportions, which may have been caused by continuous resharpening/reduction as well as by gradual alteration of tools design, due to their changing function.Englishhttps://litikum.hu