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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
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
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