Keywords: Gnathotitan2.png en Mandible finds of Gnathotitan upper part A holotype published in Henry Fairfield Osborn Titanotheres of ancient Wyoming Dakota and Nebraska United States Geological Survey Monographs 55 1929 pp 1 “953 p 935 de Unterkieferfunde von Gnathotitan oben A der Holotyp veröffentlicht in Henry Fairfield Osborn Titanotheres of ancient Wyoming Dakota and Nebraska United States Geological Survey Monographs 55 1929 S 1 “953 S 935 Henry Fairfield Osborn Titanotheres of ancient Wyoming Dakota and Nebraska United States Geological Survey Monographs 55 1929 S 1 “953 S 935 Henry Fairfield Osborn 1857-1935 1929 Brontotheriidae PD-old |