Gryposaurus latidens, Horner, 1992

Gates, Terry A. & Sampson, Scott D., 2007, A new species of Gryposaurus (Dinosauria: Hadrosauridae) from the late Campanian Kaiparowits Formation, southern Utah, USA, Zoological Journal of the Linnean Society 151 (2), pp. 351-376 : 353

GRYPOSAURUS LATIDENS HORNER, 1992

Diagnosis (after Horner, 1992): Dentary teeth shorter and wider than in other species of the genus. In addition, G. latidens possesses the following unique combination of characters: arched lateroventral margin on the maxilla; nasal arch positioned near the orbits and rising above the level of the frontals; and broad ‘U’-shaped posterior margin of the external naris. The humerus of G. latidens is larger and more robust than that of G. incurvimanus .

Holotype: AMNH 5465 , partial skull and nearly complete skeleton.