Re: A therizinosauroid dinosaur with integumentary structures fromChina

[Ronald Orenstein <ornstn@home.com>]

Mike Keesey writes:

>... true feathers would have evolved twice. Maybe I should wait until I
>read the paper, but it seems that ... 
>
>a) _Caudipteryx_ lies outside {Oviraptorosauria + Therizinosauria}
>(closer to birds).

At the Ostrom Symposium there was at least some evidence that Caudipteryx
was an oviraptorisaurid or something very like one.  Thus for a single
evolution of feathers all you would need is to have oviraptors,
Protarchaeopteryx and Avialae closer to each other than to compsognathids
or therezinosaurids.  Is this an unreasonable view?  Tom?
--
Ronald I. Orenstein                           Phone: (905) 820-7886
International Wildlife Coalition              Fax/Modem: (905) 569-0116
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