... Various shells from all over the world, especially those processed in the form of personal adornments, have benefited from detailed studies regarding their possible social-cultural functions (e.g., Vanhaeren, 2005;Rigaud, 2011). Nor have studies of wear traces (e.g., Cristiani et al., 2005;Cuenca-Solana et al., 2014Reynard, 2014;Lemorini et al., 2016;Romagnoli et al., 2017;Weston et al., 2017) on the surface of the pieces been lacking, proposing ways of attaching for adornments (e.g., Cristiani and Bori c, 2012;Vanhaeren et al., 2013;Langley and O'Connor, 2015;Langley et al., 2016) or of using for different tools (e.g., Smith and Allen, 1999;O'Day and Keegan, 2001;Przywolnik, 2003;Debruyne, 2010;Allen and Ussher, 2013;Romagnoli et al., 2014Romagnoli et al., , 2016Szab o and Koppel, 2015;Tumung et al., 2015;Harris et al., 2017). The focus of this paper has been on some aquatic resources, used by prehistoric communities north of the Danube for processing tools and personal adornments. ...