AnkylopollexiaBrachylophosauriniCerapodaDinosauriaGenasauriaHadrosauridaeHadrosauriformesHadrosauroideaHadrosauromorphaIguanodontiaLate CretaceousNeornithischiaNorth AmericaOrnithischiaOrnithopodaSaurolophinaeStyracosterna

Acristavus gagslarsoni

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Dinosaur: Acristavus gagslarsoni

Cretaceous: 83.6–72.1 Ma
Type: Ornithopod

Length*:6.4 m21.0 ft
Weight*:1.5 t3,307 lb
ESR: 2 / 4 (estimated size reliability)
*The largest known specimen



Locations


Sources

Material: Nearly complete skull and partial skeleton, referred- partial skull and cervical vertebra.
References: Gates, T.A.; Horner, J.R.; Hanna, R.R.; Nelson, C.R. (2011). "New unadorned hadrosaurine hadrosaurid (Dinosauria, Ornithopoda) from the Campanian of North America"

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