AnkylopollexiaCerapodaDinosauriaGenasauriaHadrosauridaeHadrosauriformesHadrosauroideaHadrosauromorphaIguanodontiaLate CretaceousNeornithischiaNorth AmericaOrnithischiaOrnithopodaSaurolophinaeSaurolophiniStyracosterna

Prosaurolophus maximus

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Dinosaur: Prosaurolophus maximus

Cretaceous: 83.6–72.1 Ma
Type: Ornithopod

Length*:9.3 m30.5 ft
Weight*:3.5 t7,716 lb
ESR: 3.5 / 4 (estimated size reliability)
*The largest known specimen



Locations


Sources

Material: At least over a dozen individuals (include skulls).
References: Drysdale et al. (2019). Description of juvenile specimens of Prosaurolophus maximus (Hadrosauridae: Saurolophinae) from the Upper Cretaceous Bearpaw Formation of southern Alberta, Canada, reveals ontogenetic changes in crest morphology. McGarrity, C. T.; Campione, N. E.; Evans, D. C. (2013). "Cranial anatomy and variation in Prosaurolophus maximus (Dinosauria: Hadrosauridae)".

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