AnkylopollexiaBrachylophosauriniCerapodaDinosauriaGenasauriaHadrosauridaeHadrosauriformesHadrosauroideaHadrosauromorphaIguanodontiaLate CretaceousNeornithischiaNorth AmericaOrnithischiaOrnithopodaSaurolophinaeStyracosterna

Maiasaura peeblesorum

Dinosaur: Maiasaura peeblesorum

Type: Ornithopod

Length*: 8.4 m 27.6 ft
Weight*: 2.3 tons 5,071 lb
*The largest known specimen

ESR: 4 / 4 (estimated size reliability)


Material: More than 200 individuals in all age ranges.
References: Albert Prieto-Marquez and Merrilee F. Guenther (2018). Perinatal specimens of Maiasaura from the Upper Cretaceous of Montana (USA): insights into the early ontogeny of saurolophine hadrosaurid dinosaurs.


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