Carbon, nitrogen and sulphur isotope data of archaeological fish and mammal bone collagen from Lithuania.

Until relatively recently, stable sulphur isotope analysis of bone collagen was seldom undertaken in bioarchaeological research. With increasing frequency, its application has proven useful in reconstructing palaeodiets and palaeoecologies, as well as identifying potential migration and mobility patterns. Here, sulphur (δS) isotope analysis, together with carbon (δC) and nitrogen (δN), was performed on six fish and 34 mammal bone collagen samples from 14 prehistoric sites in Lithuania dating from the Late Mesolithic (. 7000-5000 cal BC) to the Late Bronze Age (. 1100-500 cal BC). We present the first δS data from Lithuania, including coupled δC and δN data, offering a crucial dataset for future research to explore spatial and temporal variability in the region and beyond.