Gryposaurus notabilis, G. latidens, G. monumentensis, G. alsatei
By José Carlos Cortés on @ryuukibart
Name: Gryposaurus notabilis, G. latidens, G. monumentensis, G. alsatei
Name Meaning: Hook-Nosed Reptile
First Described: 1914
Described By: Lambe
Classification: Dinosauria, Ornithischia, Genasauria, Neornithischia, Cerapoda, Ornithopoda, Iguanodontia, Dryomorpha, Ankylopollexia, Styracosterna, Hadrosauriformes, Hadrosauroidea, Hadrosauridae, Saurolophinae, “Anatosauria”, “Gryposauria”, Kritosaurini
Gryposaurus is a Kritosaurin that had a very distinctive nasal hump, which was almost certainly used for display between members of the species, either sexually or just for species identification. It is also possible that it was used in combat, by having members of the species knock the hump against one another. It was about average in size for a Hadrosaur, about 8.2 meters long, and it has very detailed skin impressions. Its scales were pyramidal, ridged, and limpet shaped skuts on the flank and tail; uniform and polygonal on the neck and sides; and pyramidal flattened and fluted along the back in a single row. There are four named species of the genus, and they differ in how the skull and jaw are formed. G. notabilis is from the Dinosaur Park Formation in Alberta, living approximately 76 to 74 million years ago in the Campanian age of the Late Cretaceous. G. latidens comes from the early Campanian in the Two Medicine Formation of Montana, living approximately 83 million years ago. G. monumentensis is known from the Kaiparowits Formation in Utah, dating to the Campanian and around 76 to 74 million years ago. Finally, G. alsatei, which is not confirmed to be a species of Gryposaurus, was found in the Javelina Formation in Texas, dating to the Maastrichtian age around 66 million years ago.
By Jack Wood on @thewoodparable
Gryposaurus has had something of a taxonomically confusing history, with specimens of the genus frequently assigned to other genera such as Hadrosaurus and Kritosaurus, and specimens of Hadrosaurus and Kritosaurus also assigned to Gryposaurus. It also is often thought to be the same genus as Kritosaurus, and though the two have been separated from one another for now, this could change in the future. As it had many species from multiple regions it was a fairly consistent presence in the Late Cretaceous of North America, and would have been a mid-level browser, eating about 4 meters above the ground. It would have lived in many different environments but especially wetland peat swamps and highland environments, and in general wet and humid climates.
Source:
https://en.wikipedia.org/wiki/Gryposaurus
Shout out goes to @boneslikegranite!
