Re: ZALMOXES

["Tim Williams" <twilliams_alpha@hotmail.com>]

Dinogeorge@aol.com wrote:

> Several genera that may have been synonymized with Iguanodon on the basis 
> of similarities with I. atherfieldensis include: Heterosaurus, Therosaurus, 
> Vectisaurus, and Sphenospondylus.

It was my impression_Therosaurus mantelli_ (= _Iguanodon mantelli_) was a 
junior objective synonym of _Iguanodon anglicus_.  Both species are _nomina 
dubia_, based on the same indeterminate type material.  _Therosaurus_ 
appears to be an arbitrary renaming of _Iguanodon_.  Thus, Fitzinger's 
_Therosaurus_ can be removed from contenton.

However, _Heterosaurus neocomiensis_, _Vectisaurus valdensis_, and 
_Sphenospondylus gracilis_ have all been considered subjective junior 
synonyms of _I. atherfieldensis_; and as the type species for their 
respective genera, all three offer possible available generic names for _I. 
atherfieldensis_.  I'm not certain that _S. gracilis_ is a valid species, 
but the other two are based on decent material.  Whether they pertain to the 
same species as _I. atherfieldensis_ is another matter.  As George notes, if 
they are, the species names would have priority over _atherfieldensis_.




Tim

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