Re: Pygostyle

["T. Mike Keesey" <tkeese1@gl.umbc.edu>]

On Wed, 22 Sep 1999, Grant Harding wrote:

> >  What version of Deinonychosauria? Sensu Gautier?
> >Sensu Padian et al.? Do you include Troodontidae in
> >this, or not? The inclusion of specific taxa is the
> >dispute, and as the Ostrom Symposium demonstrated,
> >there's evidence they are closer to each other than
> >either is to other taxa, from independant studies.
> >Check out the posts on "Ostrom" in the archives for
> >further details, but I think Norell and Martin were
> >the two main (or only) presenters of this phylogeny.
> 
> Hmm.  I was using the definition of Deinonychosauria employed on T. Mike
> Keesey's site, which is something like {_Deinonychus_ > a whole bunch of
> other theropod genera, one of which is _Troodon_}.  I don't know whose
> _sensu_ that is.

When my site was up (and when it comes back up again) the definition was
(and will be): Deinonychosauria == {_Deinonychus_ > Neornithes}

Thus it may or may not include Troodontidae. (Indeed, it may or may not
include _Dromaeosaurus_, although the current consensus seems to be that
it does.)

--T. Michael Keesey
tkeese1@gl.umbc.edu | THE DINOSAURICON: http://dinosaur.umbc.edu/
AOL IM:   RicBlayze | WORLDS:    http://www.gl.umbc.edu/~tkeese1/