Re: Alxasaurus Whoops/Clarification

["Jaime A. Headden" <qilongia@yahoo.com>]

Larry Dunn wrote:

<Should have mentioned that I realize that Alxasaurus was described in
1993 in the Canadian Journal of Earth Science. What I meant to ask was
whether that description is still in good standing and if not (as some
have said) what the problems with the Russell/Dong description are.>

  Not as clearly illustrated as it should have been, in my opinion:
something more three-dimensional. Pedal elements (especially the
metatarsus) need to be better demonstrated, perhaps in a future paper.

  The analysis of function of the parts could have gone better, but I
notice this in a few Dale Russell papers. (No! Don't hit me! I like
the man, really, I do!).

  There are two distinct  bones in the "semi-lunate" complex, not a
true s-l, but shape somewhat like that in troodontids (quashed, more
rectangular than hemispherical. I don't have a lot of problems with
it, though.

  As for *Pelecanimimus*, as the authors state within, more of it
needs to be prepared before an osteology can be performed, which would
be great, especially the head. Hopefully, this'll be soon.

==
Jaime A. Headden

Qilong, the website, at:
http://members.tripod.com/~Qilong/qilong.html
---
All comments and criticisms are welcome!

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