RE: What're Rebbachisaurids? (was - New Nemegtosaurus paper)

[Tim Williams <twilliams_alpha@hotmail.com>]

Denver Fowler wrote:

> Some material form ?Croatia? too, and I'm currently
> describing some material from the UK.

Dalla Vecchia considered _Histriasaurus_ from Croatia to be a 
rebbachisaurid.  Apesteguia (2005) considers this unlikely, based upon the 
presence of a hyposphene-hypantrum complex in the dorsal vertebra (absent 
from other other rebbachisaurids).  Apparently he has a paper in press.

Tim Donovan wrote:

> > Like many previous authors, Wilson also raises the possibility that
> > _Nemegtosaurus_ and _Opisthocoelicaudia_ may be the same; but 
> overlapping
> > material is required before this can be considered.
>
>  P. Currie considers it likely.

Given that _Opisthocoelicaudia_ (once considered a camarasaurid) and 
_Nemegtosaurus_ (once considered a diplodocoid) have both been moved into 
the Titanosauria, based on very convincing evidence; and that the skull of 
_Nemegtosaurus_ and the postcervical skeleton of _Opisthocoelicaudia_ were 
found a few kilometers apart at the same stratigraphic level... this narrows 
the odds that the two may be the same.  However, Wilson's point (and he is 
absolutely correct) is that proof is needed - such as a specimen that 
includes both cranial and postcranial material.  I'm sure Dr Currie feels 
the same way.  While it is tempting to synonymize the two, we cannot 
discount the possibility that more than one titanosaur existed at this 
locality.

Cheers

Tim


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> From: Denver Fowler <df9465@yahoo.co.uk>
> Reply-To: df9465@yahoo.co.uk
> To: twilliams_alpha@hotmail.com, dinosaur@usc.edu, rodlox@hotmail.com
> Subject: RE: What're Rebbachisaurids? (was - New Nemegtosaurus paper)
> Date: Fri, 26 Aug 2005 10:33:01 +0100 (BST)
>
>
> --- Tim Williams <twilliams_alpha@hotmail.com> wrote:
>
> > Rodlox R <rodlox@hotmail.com> wrote:
> >
> > >out of curiosity, what're the Rebbachisaurids like?
> >
> > Rebbachisaurids are a family of diplodocoids,
> > perhaps most similar to
> > dicraeosaurids, and so far known only from the
> > Cretaceous of Africa and
> > South America.
>
> Nope they are known in Europe too. See:
>
> BSGF-2003-Pereda-Suberbiola et Al- Rebbachisaurid, EK,
> EU, SPAIN
>
> Some material form ?Croatia? too, and I'm currently
> describing some material from the UK.
>
> Denver.
>
>
>
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