[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

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.


Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at http://profiles.msn.com.