Isotopic and anatomical evidence of an herbivorous diet in the Early Tertiary giant bird Gastornis. Implications for the structure of Paleocene terrestrial ecosystems

@article{Angst2014IsotopicAA,
  title={Isotopic and anatomical evidence of an herbivorous diet in the Early Tertiary giant bird Gastornis. Implications for the structure of Paleocene terrestrial ecosystems},
  author={Delphine Angst and Christophe L{\'e}cuyer and Romain Amiot and Eric Buffetaut and François Fourel and F. Martineau and Serge Legendre and Anick Abourachid and Anthony Herrel},
  journal={Naturwissenschaften},
  year={2014},
  volume={101},
  pages={313-322}
}
The mode of life of the early Tertiary giant bird Gastornis has long been a matter of controversy. Although it has often been reconstructed as an apex predator feeding on small mammals, according to other interpretations, it was in fact a large herbivore. To determine the diet of this bird, we analyze here the carbon isotope composition of the bone apatite from Gastornis and contemporaneous herbivorous mammals. Based on 13C-enrichment measured between carbonate and diet of carnivorous and…