In situ high spatial resolution 87Sr/86Sr ratio determination of two Middle Pleistocene (c.a. 580 ka) Stephanorhinus hundsheimensis teeth by LA-MC-ICP-MS
87Sr/86Sr determination by LA–MC–ICP–MS of biogenic apatites strengthened. Use of three matrix-matched in-house reference materials. Two Middle-Pleistocene rhino fossil teeth analysed in high-spatial resolution. Possible seasonal rhino migrations inferred from intra-tooth 87Sr/86Sr variations.