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In a message dated 11/18/99 2:41:07 PM Pacific Standard Time,
> > You may rest easy; Dinosauria is not at risk.
> Unless we determine at some point that it truly ISN'T monphyletic....
Well, as has been mentioned before, "the clade containing the most recent
common ancestor of _Triceratops_ and birds and all descendents of that common
ancestor" is going to be monophyletic no matter what, even if it happens also
to contain crocodiles, ichthyosaurs, bats, squids, or oak trees.
Strict adherents to PT will continue to call this clade "Dinosauria" no
matter what it ends up containing, until it reaches the point of being
synonymous with some earlier-defined clade.