Named By: David B. Norman - 2010.
Synonyms: Iguanodon fittoni, Wadhurstia.
Classification: Chordata, Reptilia, Dinosauria, Ornithischia, Ornithopoda, Iguanodontia.
Species: H. fittoni (type).
Size: Roughly estimated about 6 meters long.
Known locations: England, Sussex - Wadhurst Clay Formation. Possibly Spain.
Time period: Valanginian of the Cretaceous.
Fossil representation: Partial post cranial remains, including sacrum, caudal (tail) vertebrae, left ilium and teeth.
was a genus of ornithopod that was similar to Iguanodon,
in fact that the holotype remains of the genus were originally named as
a species of Iguanodon, I. fittoni.
These remains were
re-described as a new genus by Norman in 2010, but not long after
another name for the remains was proposed by Carpenter and Ishida.
Iguanodon fittoni was now named as Hypselospinus
and Wadhurstia, but
because first naming has priority in such circumstances, Wadhurstia
became a synonym to Hypselospinus.
The partial remains of Hypselospinus on their own do not reveal much about the life of this dinosaur, but as an iguanodontid a few things can be assumed by them. Hypselospinus seems to have been a mid-range sized ornithopod, that would have probably been primarily quadrupedal, but still have the ability to be bipedal when it had to, such as reaching vegetation growing beyond the height that low browsers could reach.
- On the remains and affinities of five genera of Mesozoic reptiles, Richard Lydekker - 1889.
- A taxonomy of iguanodontians (Dinosauria: Ornithopoda) from the lower Wealden Group (Cretaceous: Valanginian) of southern England, David B. Norman - 2010.
- Early and “Middle” Cretaceous Iguanodonts in Time and Space, K. Carpenter & Y. Ishida - 2010.