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Re: Dinosaurs and birds



David Marjanovic wrote:

> ----- Original Message -----
> From: "Dann Pigdon" <dannj@alphalink.com.au>
> Sent: Thursday, April 05, 2007 8:54 AM
> 
> > I envisage the juveniles of some
> > dromaeosaurs (like *Saurornithosaurus*) spending a lot of time in trees,
> > avoiding larger predators and perhaps chasing small arborial prey. The
> > recurved second toe would have made a handy grapple
> 
> I disagree. The claw is not round in cross-section. I can't recommend
> cutting off the twig on which you're standing.

What is the claw like in juveniles? I'm thinking more of a 'scramble up
a trunk' scenario.

> So the question is whether birds are paedomorphic or dromaeosaurs are
> peramorphic? :-)

Much more eloquently put. :)

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