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Re: Senter et al. 2004 impressions

--- Tim Williams <twilliams_alpha@hotmail.com> wrote:

> Mickey Mortimer wrote:
> >Yup.  Arctometatarsalia is (Segno(Troodo(Deinocheir(Alvarez,Ornithom)))) in
> >the dissertation [snip] alvarezsaurids are arctometarsalians in Senter's 
> >phylogeny.
> Accordingly, phylogenetic bracketing woud require that _Deinocheirus_ had an 
> arctometatarsalian pes, or secondarily lost it.  Interestingly, under this 
> phylogeny both _Deinocheirus_ and alvarezsaurids belong to an expanded 
> Bullatosauria.

Since _Deinocheirus_ has long been thought to be an ornithomimosaur, it was
supposed to have an arctometatarsalian pes (or reversal from that state, as you
say) anyway, and would also have been included under _Bullatosauria_ in
phylogenies where the clade was not equivalent to _Maniraptoriformes_.

=====> T. Michael Keesey <http://dino.lm.com/contact>
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