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Re: Ouranosaurus - how many species? Other "spino"-Igaunodontids?
B tH <email@example.com> wrote:
> Always thought it was kind of weird
> these guys would appear ... is this the only known genus in
> the group with spines?
_Dollodon_, from the Early Cretaceous of Belgium, has them too. According to
Paul (2008): "Neural spines of dorsals, sacrals and caudals form moderately
tall sail." So _Dollodon_ had a sail, but not as tall as that of
_Ouranosaurus_. (The _Dollodon_ holotype [IRSNB 1551] was previously referred
to _Iguanodon_. The taxonomy of 'iguanodonts' is still in a state of flux,
including the status of the genus _Dollodon_; so we'll see where IRSNB 1551
The very large iguanodont _Lanzhousaurus_, from the Early Cretaceous of China,
also has rather tall dorsal neural spines - but perhaps not tall enough to
support a sail.