Strontium isotope age-dating of fossil shark tooth enameloid from the Upper Cretaceous Strata of Alabama and Mississippi, USA

What is it about?

This study uses strontium isotope ratios preserved in shark teeth to determine the numerical ages of the specimens and their stratigraphic horizons.

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Why is it important?

It can be used as tool for age correlation in areas where conventional age-dating techniques are not available or practical.