Bowen, G. J.; et al. (2015). "Two massive, rapid releases of carbon during the onset of the Palaeocene–Eocene thermal maximum". Nature.8 (1): 44–47. doi: 10.1038/ngeo2316
Angst D., Lécuyer C., Amiot R., Buffetaut E., Fourel F., Martineau F., Legendre S., Abourachid A., Herrel A. (2014). "Isotopic and anatomical evidence of an herbivorous diet in the Early Tertiary giant bird Gastornis. Implications for the structure of Paleocene terrestrial ecosystems". Naturwissenschaften.101 (4): 313–322. doi: 10.1007/s00114-014-1158-2
Blanco, R. E.; Jones, W. W. (2005). "Terror birds on the run: a mechanical model to estimate its maximum running speed". Proceedings of the Royal Society B.272 (1574): 1769–1773. doi: 10.1098/rspb.2005.3133
Gavin G. Kenny, William R. Hyde, Michael Storey, Adam A. Garde, Martin J. Whitehouse, Pierre Beck, Leif Johansson, Anne Sofie Søndergaard, Anders A. Bjørk, Joseph A. MacGregor, Shfaqat A. Khan, Jérémie Mouginot, Brandon C. Johnson, Elizabeth A. Silber, Daniel K. P. Wielandt, Kurt H. Kjær & Nicolaj K. Larsen (2022). A Late Paleocene age for Greenland’s Hiawatha impact structure. Science Advances. 8 (10): eabm2434. doi: 10.1126/sciadv.abm2434