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Re: Aurornis, new Jurassic avialan dinosaur from China

On Wed, May 29, 2013 at 2:19 PM, David Marjanovic
<david.marjanovic@gmx.at> wrote:
> Then comes Troodontidae (within which *Jinfengopteryx* is the sister-group to 
> the rest), so birds are officially deinonychosaurs now;

IIRC, the earliest phylogenetic definition for Deinonychosauria is
branch-based, so it's not that birds are deinonychosaurs, but that
troodontids are not.
T. Michael Keesey