Microradiography of fossilized teeth.
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.
D005580:Fossils; D008852:Microradiography; D008903:Minerals; D010161:Paleodontology; D014070:Tooth; D014961:X-Ray Diffraction
D008903:Minerals
PALEODONTOLOGY; TEETH