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Re: Tyrannosaur analogs in the south?



"Thomas R. Holtz, Jr." wrote:
> 
> > From: Richard W. Travsky
> > Would that be a result of common origins or "lifestyle"?
> 
> Lifestyle (aka "convergence"), as more primitive tyrannosauroids (_Guanlong_, 
> for example) and other coelurosaurs and basal
> tetanurines have much longer arms than tyrannosaurids.

It's interesting to note that *Indosuchus* was classified in and out of
Tyrannosauridae for a while, until more (and more complete) remains came
to light (of both *Indosuchus* itself and other Abelisaurids). It was
probably a result of both a degree of convergence between the two
families, and people trying to shoe-horn newly discovered species into
existing (and better known) families (whether they really fit there or
not).

-- 
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Dann Pigdon
GIS / Archaeologist         http://www.geocities.com/dannsdinosaurs
Melbourne, Australia        http://heretichides.soffiles.com
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