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Geeze, yet another stupid question.
Dinosauria without birds is paraphyletic. But what are birds without
dinosaurs ... polypheletic? The definition of polyphyletic, it seems to me,
wouldn't apply in this case. So what is the proper term?
[The question is rather ambiguous since you must first precisely
define what you mean by "bird" and "dinosaur". The way most of us
here use the words the question is rather non-sensical (just like
"what would you call the group that includes seals but not mammals?")
-- MR ]
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