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Re: Ah ha! That's where therizinosaurs came from

> This is only "nutty" if you assume that Archaeopteryx_ was flighted.
> Otherwise, flight arose in derived Avialae.

Yes, that is what I meant. It is nutty to think of flight arising more
than once within Maniraptora. yet it certainly could have happened, and I
am open minded about that.

Jason Brougham
Senior Principal Preparator
Department of Exhibition
American Museum of Natural History
81st Street at Central Park West
212 496 3544