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Re: Eocursor, new basal ornithischian
On 6/13/07, Bill Parker wrote:
> Are there any other characters that support a Sacisaurus/Silesaurus +
> Ornithischia relationship to the exclusion of other dinosauriforms?
On 6/13/07, David Marjanovic wrote:
Yes, just not enough. One is the ability to pronate the forearm and thus to
walk quadrupedally with vertical forelimbs.
So in actuality the question should not be just "are there any other
characters that support a _Sacisaurus_/_Silesaurus_ + Ornithischia
relationship to the exclusion of other dinosauriforms", but also "is
the number of those characters greater than the number of those
supporting the alternative placement?" Too often it seems in
ornithischian work (and perhaps in phylogenetics in general), the
first question is looked at, but the second is neglected.