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Re: Skulls and arms...

>The fly in the ointment is, of course, _Carnotaurus_, with its bizzare
>short snout and ridiculous truncated arms.  But that's just a weird
>animal, and there's no legislating for it :-)  It did occur to me that
>the short snout might be pathological (am I right in thinking that
>there's only one, very well preserved, _Carnotaurus_ specimen?) but we
>also the skull from _Majungatholus_ which is similar.

>From a non-dinosaurian specialist (so don't be too crude if there is some

While I agree with most of your statements here, I think (maybe wrongly who
knows?) that any  pathology affecting snout (=feeding abilities) would
hardly let an animal live enough to get large size.
So IMHO we have to live with a  short-snouted dwarf-limbed carnotaur. 

>So what kind of selection pressure could produce a small head _and_
>small forearms, together with that distinctive but presumably useless
>long thorax?

What about the neck?  **Might** it bring a plausible solution?


                                        Silvio Renesto


"where does Taiji came from? It came from Wuji"   
                                        (Wang Zongyue)
Dr. Silvio Renesto
Dipartimento di Scienze della Terra
Università degli Studi di Milano
via Mangiagalli 34
I 20133 Milano

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