Microradiography of Fossilized Teeth

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Science  05 Apr 1963:
Vol. 140, Issue 3562, pp. 78-80
DOI: 10.1126/science.140.3562.78


Microradiographic studies of fossil reptilian and amphibian teeth reveal an excellently preserved microstructure with little if any apparent mineralization except in the region of obvious fractures. X-ray diffraction has shown that the invading mineral near fractures is hematite, and x-ray spectroscopy has shown that relatively large amounts of yttrium are present.