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Re: I will be ostracized because of this
On Wed, 25 Feb 1998, T. Mike Keesey wrote:
> It's hard to be critical of someone who endorses my site so strongly,
I appreciate all criticisms. One learns much more quickly if someone
helps point out one's errors.
> This is a little confusing right off the bat. Why isn't _Therizinosaurus_
> in Therizinosauridae, and what do you mean by "primitive segnosaurs"?
That was a mistake on my part. I should have reverted Therizinosauridae
back to Segnosauridae when I removed _Therizinosaurus_. By "primitive
segnosaurs" I am referring to basal phytodinosaurs that do not fit in the
Sauropodomorpha or Ornithischia. Since they probably would have had the
"prosauropod/'fabrosaurid'" foot, a shoulder girdle similar to _Theriz._
and other miscellaneous and varied details often characteristic of
"segnosaurs," I referred to them thusly for simplicity (which backfired).
> This seems like more of an argument for inclusion of herrerasaurids in
> Theropoda to me.
Not if it was an independent development of the character.
> "Basal phytodinosaurs" might be a better term than "segnosaurs".
> > _Eoraptor_, but primitive to _Staurikosaurus_ based on comparisons of the
> > pelvis and skull in these two forms as compared with the relatively
> > derived _Segnosaurus_ and "prosauropods".
> Now I'm really confused. This doesn't look like your cladogram at all, and
> I still don't know what you mean by "segnosaurs".
>>|--+--Herrerasauridae (or "herrerasaurids")
>>| |=="primitive segnosaurs" [BASAL PHYTODINOSAURS]
What I was attempting to illustrate here (perhaps illustrated poorly) is
that phytodinosaurs branched off at a more derived state than _Eoraptor_,
with a few of characters similar to herrerasaurids.
> > ALSO CHECK OUT T. MIKE KEESEY'S WEBSITE FOR THE CURRENTLY ACCEPTED
> > CLADISTIC ANALYSIS OF ALL DINOSAURS:
> > <http://www.gl.umbc.edu/~tkeese1/dinosaur>
> Thanks! It's accepted by me, anyway... more or less.
Plus, it's pretty similar to what is found in the most current literature.
Great site (like the remodeling you've done).