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RE: Science feather strength debate



> I'm inclined to believe you. I know that the knobs aren't in quite the
> same position on the ulna as they are in paraves. I think they're more
> dorsal.  Do you know of the most basal evidence for incipient wing
> feathers? Is it all in maniraptora?
>
>
>>
>> Jason Brougham wrote-
>>
>>> Yes, of course it is not certain. But Conchavenator may have had
>>> enlarged feathers on the ulna, and this might suggest that ulnar
>>> feathers evolved no later than the last common ancestor between
>>> carcharodontosaurs and birds lived. Of course it could be even earlier.
>>> In any case, it is then quite possible that "wings" were serving some
>>> function separate from climbing into trees.
>>
>> As Naish and I independantly concluded, the supposed feather quill knobs
>> on Concavenator's ulna are probably an intermuscular line.
>> http://theropoddatabase.blogspot.com/2010/09/concavenator-feathers-becklespinax-and.html
>> http://theropoddatabase.blogspot.com/2010/09/concavenator-part-ii-becklespinax.html
>>
>> Mickey Mortimer
>>
>>
>
>
> Jason Brougham
> Senior Principal Preparator
> Department of Exhibition
> American Museum of Natural History
> 81st Street at Central Park West
> 212 496 3544
> jaseb@amnh.org
>


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