Becker, M.A. & Seidemann, D.E. & Chamberlain, J.A. & Buhl, D. & Slattery, W. (2008)
Strontium isotopic signatures in the enameloid and dentine of upper Cretaceous shark teeth from western Alabama: paleoecologic and geochronologic implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 264(1–2), 188–194
DOI: 10.1016/j.palaeo.2008.04.006