AnkylopollexiaCerapodaDinosauriaGenasauriaHadrosauridaeHadrosauriformesHadrosauroideaHadrosauromorphaIguanodontiaLambeosaurinaeLambeosauriniLate CretaceousNeornithischiaNorth AmericaOrnithischiaOrnithopodaStyracosterna

Hypacrosaurus stebingeri 

Dinosaur: Hypacrosaurus stebingeri 

Type: Ornithopod

Length*: 10.5 m 34.4 ft
Weight*: 5.5 tons 12,125 lb
*The largest known specimen

ESR: 3.5 / 4 (estimated size reliability)


Material: Many skeletons and skulls (juvenile to adult and also embryonic individuals).
References: Evans, D. C. (2010). Cranial anatomy and systematics of Hypacrosaurus altispinus, and a comparative analysis of skull growth in lambeosaurine hadrosaurids (Dinosauria: Ornithischia).


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