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In fossil mammal bones and teeth from Marillac (40,000–45,000 years Br), collagen has been found to be preserved. This collagen presents a similar amino acid composition to modern collagen. An isotopic difference between collagen of herbivorous and carnivorous species is clearly documented in this paper and it is shown that the decrease of the amount of collagen in bones and teeth through diagenesis...
Les teneurs en 13 C et 15 N du collagène extrait des os et des dents des mammifères permettent de retrouver la nature des constituants du régime alimentaire des organismes. A partir des données ainsi obtenues, on peut envisager la reconstitution des relations trophiques d'un écosystème. Cette méthode a été appliquée à des restes de mammifères fossiles et de néandertaliens provenant...
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