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RE: Scleromochlus ankles ++ Kellner 2004
David Peters wrote:
> I don't think these difficulties (should they exist) are
> insurmountable. Also
> it's worth noting that pterosaurs can be ornithodirans without first
> establishing a _Scleromochlus_-Pterosauria sister group relationship.
> –––––––> They can? I was under the impression that dinos + pteros +
> sclero = Ornithodira. (Gauthier 1986). Tell me more.
Benton (2004) offered a revised definition, which excludes _Scleromochlus_, and
defined Ornithodira as the node-based taxon that includes pterosaurs and
> If you want to find synapomorphies between pterosaurs and dinosaurs,
> one might look at the palate, occiput or pelvis, characters
> disassociated from flight. But, heck, you won't find them their either.
One should look at as many characters as possible. And I don't really want to
"find" synapomorphies; they emerge from analyses of their own volition.
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