Re: Segnosaurs Analyzed as Prosauropods

["ekaterina amalitzkaya" <eamalitz@hotmail.com>]

I was wondering if the swollen parbasisphenoid was a potential synapomorphy
of the Ornithomimosaur-therizinosaur clade? Is a similar swollen pbs seen in
other theropods lineages ?. What is the biological function of the swollen
pbs?

Also has Mr. Mortimer examined the state of the coronoid in the
Ornithomimosaurs: Is it not reported to be missing in Orinithoms and
Therizis but present though in a peculiar form in the oviraptorosaurs.

It would be nice to hear from you experts on the possible evolutionary
significance of the variations in the coronoid in the theropods.

thanks
EA
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