Buffetaut, E., and Burrrraur, E. (1997). "New remains of the giant bird Gastornis from the Upper Paleocene of the eastern Paris Basin and the relationships between Gastornis and Diatryma." N. Jb. Geol. Palâont. Mh., (3): 179-190. [1]
Mustoe, George E;Tucker David S & Kemplin, Keith L (2012). «Giant Eocene Bird Footprints From Northwest Washington, USA». Palaeontology55 (6): 1293-1305. doi:10.1111/j.1475-4983.2012.01195.x.
Buffetaut, Eric (2004). «Footprints of Giant Birds from the Upper Eocene of the Paris Basin: An Ichnological Enigma». Ichnos11 (3–4): 357-362. doi:10.1080/10420940490442287.
Patterson, John & Lockley, Martin (2004). «A Probable Diatryma Track from the Eocene of Washington: An Intriguing Case of Controversy and Skepticism». Ichnos11 (3–4): 341-347. doi:10.1080/10420940490442278.
Buffetaut Eric, Angst Delphine. «Stratigraphic distribution of large flightless birds in the Palaeogene of Europe and its palaeobiological and palaeogeographical implications». Earth-Science Reviews138: 394-408. doi:10.1016/j.earscirev.2014.07.001.
Sinclair, W. J. (1928). «Omorhamphus, a New Flightless Bird from the Lower Eocene of Wyoming». Proc. Amer. Philosophical SocietyLXVII (1): 51-65. JSTOR984256.