AnkylopollexiaCerapodaDinosauriaGenasauriaHadrosauridaeHadrosauriformesHadrosauroideaHadrosauromorphaIguanodontiaLate CretaceousNeornithischiaNorth AmericaOrnithischiaOrnithopodaStyracosterna

Stephanosaurus marginatus

Dinosaur: Stephanosaurus marginatus


Type: Ornithopod

Length*: 7.6 m 24.9 ft
Weight*: 2.5 tons 5,511 lb
*The largest known specimen

ESR: 2 / 4 (estimated size reliability)


Other

Material: Partial skeleton (mostly limb bones).
References: Lull, Richard S.; Wright, Nelda E. (1942). "Hadrosaurian Dinosaurs of North America".

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