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Re: VALIDITY OF AVES



Matthew Troutman wrote:
> 
> <<Do birds have a common ancester?>>
> 
> Yes.  The common ancestor is _Archaeopteryx_.  No matter which basal
> avian phylogeny that you read (whether it supports Sauriurae or
> Ornithothoraces) they all stick by the conclusion that _Archaeopteryx_
> is the closest thing to an avian common ancestor. 

Surely you mean that the ancestor of modern birds was with all
probability an archaeopterygian. The chances of any direct ancestor
actually being fossilized (preserved, and found) is extremely slim.
Archaeopteryx may be the "closest thing to an avian common ancestor"
but it was not necessarily that exact species.

-- 
____________________________________________________
        Dann Pigdon
        GIS Archaeologist
        Melbourne, Australia

        Australian Dinosaurs:
        http://www.geocities.com/capecanaveral/4459/
        http://www.alphalink.com.au/~dannj
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