Genus
Valid Extinct

Gryposaurus

Lambe 1914
Etymology Lézard au nez crochu (ce nom fait référence à la surface dorsale du nasal qui est en forme d’arche, et dont la morphologie rappelle le bec crochu du [http://fr.wikipedia.org/wiki/Griffon_%28mythologie%29 griffon]).

Gryposaurus was a genus of duckbilled dinosaur that lived about 80 to 75 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 two 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.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
22
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Gryposaurus
click to enlarge
Gryposaurus monumentensis Utah Museum of Natural History © Berkeley T. Compton · CC BY-SA 2.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Ornithischia Unranked clade
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Neornithischia Unranked clade
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Pyrodontia Unranked clade
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Cerapoda Unranked clade
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Ornithopoda Suborder
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Iguanodontia Infraorder
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Euiguanodontia Unranked clade
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Dryomorpha Unranked clade
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Ankylopollexia Unranked clade
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Styracosterna Unranked clade
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Hadrosauriformes Unranked clade
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Hadrosauroidea Unranked clade
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Hadrosauridae Family
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Hadrosaurinae Subfamily
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Kritosaurini Tribe
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Gryposaurus Genus
Measurements
Length
7,3 m ⓘ
Gryposaurus monumentensis — min connu
9 m ⓘ
Gryposaurus alsatei — max connu
10 m ⓘ
Mass
2 300 kg ⓘ
Gryposaurus monumentensis — min connu
4 200 kg ⓘ
Gryposaurus alsatei — max connu
Fossil sites 22 geolocated sites
Distribution
Top countries
🇨🇦 Canada
13
🇺🇸 United States
9
Geological formations
Dinosaur Park
11
Kaiparowits
4
Two Medicine
2
Bearpaw Shale
1
Judith River
1
Wapiti
1
Oldman
1
Javelina
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
1
Campanian (83.6–72.2 Ma)
21
Species (5)
Gryposaurus alsatei 72 Ma
Gryposaurus incurvimanus subjective synonym of Gryposaurus notabilis 84 Ma
Gryposaurus latidens 84 Ma
Gryposaurus monumentensis 84 Ma
Gryposaurus notabilis 84 Ma
Images 1
Bibliography
Original description
L. M. Lambe. 1914. On Gryposaurus notabilis, a new genus and species of trachodont dinosaur from the Belly River Formation of Alberta, with a description of the skull of Chasmosaurus belli. The Ottawa Naturalist 27(11):145-155
Bibliography (17)
P. J. Currie, J. Lü, and Y. Wang. 2023. A juvenile hadrosaur maxilla from the Dinosaur Park Formation (Campanian) of Dinosaur Provincial Park (Alberta, Canada). Windows into Sauropsid and Synapsid Evolution: Essays in Honor of Louis L. Jacobs
T. M. Lehman, S. L. Wick, and J. R. Wagner. 2016. Hadrosaurian dinosaurs from the Maastrichtian Javelina Formation, Big Bend National Park, Texas. Journal of Paleontology 90(2):333-356 DOI ↗
A. Prieto-Márquez and S. Gutarra. 2016. The ‘duck-billed’ dinosaurs of Careless Creek (Upper Cretaceous of Montana, USA), with comments on hadrosaurid ontogeny. Journal of Paleontology 90(1):133-146 DOI ↗
T. A. Gates, E. K. Lund, and D. B. DeBlieux, A. L. Titus, D. C. Evans, M. A. Getty, J. I. Kirkland, J. G. Eaton. 2013. Ornithopod dinosaurs from the Grand Staircase-Escalante National Monument region, Utah, and their role in paleobiogeographic and macroevolutionary studies. At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah
M. A. Loewen, M. E. Burns, and M. A. Getty, J. I. Kirkland, M. K. Vickaryous. 2013. Review of Late Cretaceous ankylosaurian dinosaurs from the Grand Staircase region, southern Utah. At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah
A. Prieto-Marquez. 2013. Skeletal morphology of Kritosaurus navajovius (Dinosauria: Hadrosauridae) from the Late Cretaceous of the North American south-west, with an evaluation of the phylogenetic systematics and biogeography of Kritosaurini. Journal of Systematic Palaeontology DOI ↗
A. Prieto-Márquez. 2011. Cranial and appendicular ontogeny of Bactrosaurus johnsoni, a hadrosauroid dinosaur from the Late Cretaceous of northern China. Palaeontology 54(4):773-792 DOI ↗
T. A. Gates, E. K. Lund, and M. A. Getty, J. L. Kirkland, A. L. Titus, D. D. DeBlieux. 2010. Late Cretaceous ornithopod dinosaurs from the Kaiparowits Plateau, Grand Staircase-Escalante National Monument, Utah. Learning from the Land: Grand Staircase-Escalante National Monument Science Symposium Proceedings
A. Prieto-Marquez. 2010. The braincase and skull of Gryposaurus notabilis (Dinosauria, Hadrosauridae), with a taxonomic revision of the genus. Journal of Vertebrate Paleontology 30(3):838-854 DOI ↗
T. A. Gates and S. D. Sampson. 2007. A new species of Gryposaurus (Dinosauria: Hadrosauridae) from the late Campanian Kaiparowits Formation, southern Utah, USA. Zoological Journal of the Linnean Society 151:351-376 DOI ↗
P. J. Currie. 2005. History of research. Dinosaur Provincial Park: A Spectacular Ancient Ecosystem Revealed. Indiana University Press, Bloomington
P. J. Currie and D. A. Russell. 2005. The geographic and stratigraphic distribution of articulated and associated dinosaur remains. Dinosaur Provincial Park: A Spectacular Ancient Ecosystem Revealed. Indiana University Press, Bloomington
D. H. Tanke. 2004. Mosquitoes and mud: the 2003 Royal Tyrrell Museum of Palaeontology expedition to the Grande Prairie region (northwestern Alberta, Canada). Alberta Palaeontological Society Bulletin 19(2):3-31
D. J. Varricchio. 1993. Taphonomy of Jack's Birthday site, a diverse dinosaur bone bed. Journal of Vertebrate Paleontology 13(3, suppl.):61A
J. R. Horner. 1992. Cranial morphology of Prosaurolophus (Ornithischia: Hadrosauridae) with descriptions of two new hadrosaurid species and an evaluation of hadrosaurid phylogenetic relationships. Museum of the Rockies Occasional Paper 2:1-119
W. A. Parks. 1919. Preliminary description of a new species of trachodont dinosaur of the genus Kritosaurus. Kritosaurus incurvimanus. Transactions of the Royal Society of Canada, series 3 13:51-59
L. M. Lambe. 1914. On Gryposaurus notabilis, a new genus and species of trachodont dinosaur from the Belly River Formation of Alberta, with a description of the skull of Chasmosaurus belli. The Ottawa Naturalist 27(11):145-155