Gryposaurus (meaning "hooked-nosed lizard") is an extinct genus of hadrosaurian dinosaur that lived about 83 to 74 million years ago, in the Late Cretaceous of North America. Named species of Gryposaurus are known from the Dinosaur Park Formation in Alberta, Canada, and 2 formations in the United States: the Lower Two Medicine Formation in Montana and the Kaiparowits Formation of Utah. A possible additional species from the Javelina Formation in Texas may extend the temporal range of the genus to 66 million years ago.
Gryposaurus is similar to Kritosaurus, and for many years they were both thought to be synonyms. It is known from numerous skulls, some skeletons, and even some skin impressions that show it to have had pyramidal scales projecting along the midline of the back. It is most easily distinguished from other duckbills by its narrow arching nasal hump, sometimes described as similar to a "Roman nose," and which may have been used for species or sexual identification, and/or combat with individuals of the same species. A large bipedal/quadrupedal herbivore around 8 meters (26 feet) long, it may have preferred river settings.
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Jurassic Park media[]
Gryposaurus has never appeared or mentioned in any Jurassic Park films or books, it has however been featured in the Dinosaur Field Guide as well as the Jurassic World Dinosaur Field Guide.
