Keywords: Tooth

Castro et al., 2010), conditions of cremation and contamination of cremated remains (e.g., Grupe and Hummel, 1991; Brooks et al., 2006), identification of specimen provenance and burial condi-tions (e.g., Trueman and Tuross, 2002; Trueman, 2004), and discriminating processes of post-mortem trace element uptake In this study, we report trace element concentrations in modern herbivore, omnivore, and carnivore teeth from Idaho for approxi-mately 80 % of the periodic table, primarily to evaluate trophic-level concentration changes across numerous elements within the context of palaeodietary research. Some trace elements biopurify (concentrations decrease) or biomagnify (concentrations increase) relative to others with increasing trophic level. Palaeodietary studies commonly use Ba/Ca and Sr/Ca ratios of hominids relative to local herbivores to determine trophic position (e.g., see Lee