RE: Tyrannosaur analogs in the south?

["Richard W. Travsky" <rtravsky@uwyo.edu>]

On Fri, 30 Mar 2007, Thomas R. Holtz, Jr. wrote:
> > From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]On Behalf Of
> > Christopher Gunning
> >
> > [[De-lurk...]]
> >
> > I have a question about Gondwanaland in the Cretaceous.  It looks like 
> > the Tyrannosaurids were located primarily (exclusively?) on Laurasia... 
> > so what were the primary predators on the Southern Continent?  Were 
> > there analogs to the big predators we know and love, or something 
> > completely different?  Or is the fossil record down there not given up 
> > that mystery yet?
>
> The Late Cretaceous top predators of Gondwana were the Abelisauridae. 
> Not as big as the tyrannosaurids, nor were they particularly cursorial, 
> but like their distant northern kin they had stumpy arms.

Would that be a result of common origins or "lifestyle"?