AnkylopollexiaBrachylophosauriniCerapodaDinosauriaGenasauriaHadrosauridaeHadrosauriformesHadrosauroideaHadrosauromorphaIguanodontiaLate CretaceousNeornithischiaNorth AmericaOrnithischiaOrnithopodaSaurolophinaeStyracosterna

Acristavus gagslarsoni

Dinosaur: Acristavus gagslarsoni


Type: Ornithopod

Length*: 6.4 m 21.0 ft
Weight*: 1.5 tons 3,307 lb
*The largest known specimen

ESR: 2 / 4 (estimated size reliability)


Other

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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