Blurred time resolution of tooth dentin serial sections.

These results demonstrate that DSSs correspond to an unexpectedly wider (i.e., three to four times) and different (i.e., -2 to 0.5 years on average) age range than previously assumed and that complicated patterns of dietary change blur in the isotopic trajectory of the sections. Alternative experimental methods, such as imaging-assisted oblique sampling, should be used to retrieve an accurate and precise sequential dietary record from tooth dentin.