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Hypselospinus
Dinosaur
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Hypselospinus is a genus of iguanodontian dinosaur which was first described as a species of Iguanodon by Richard Lydekker in 1889, the specific name honouring William Henry Fitton. Wikipedia
Mass: 1,800 lbs
Length: 20 ft. (Estimated)
Lived: 139.8 million years ago - 136.4 million years ago (Valanginian)
Scientific name: Hypselospinus (High thorn)