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Re: New member of the list/hadrosaurs



But if Titanosaurs  were in Australia & South America, surely they were in
Antarctica.

Joao SL
Rio
----- Original Message -----
From: Timothy Williams <twilliams_alpha@hotmail.com>
To: <Adam.Yates@bristol.ac.uk>; <dinosaur@usc.edu>
Sent: Thursday, September 28, 2000 3:31 PM
Subject: Re: New member of the list/hadrosaurs


>
> Adam Yates wrote (in reply to João Simões Lopes Filho):
>
> > > North AMerican Alamosaurus seems to be an immigrant from South
America,
> > > where Titanosaurs were common.
> >
> >This is an appealing and simple idea but it might be wrong. [snip]
> >Titanosaurs have recently been found in
> >the lower Cretaceous of North America so it is entirely possible that
> >Alamosaurus is part of an endemic North American lineage of titanosaurs.
>
> _Alamosaurus_ could indeed be a home-grown titanosaur.  Also, there is
> evidence (I picked this up in the NMMNH volume) that the combined
> _Alamosaurus_ material from the SW US may represent more than one
> titanosaurid taxa.
>
> As for the global record of titanosaurs (i.e. Titanosauria), Molnar
recently
> referred the Australian sauropod _Austrosaurus_ to the group.  This means
> every continent except Antarctica has a record of mid or late Cretaceous
> titanosaurs.
>
>
> Tim
>
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