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Re: Do we have dromaeosaurid evolution backward?

 As I see it, one major problem with this idea is that if large,
 pennaceous feathers originally evolved for aerodynamic purposes,
 these feathers are unlikely to have arisen in "large" (2-4m long)
 theropods that used their forelimbs for catching prey.

I suppose that's where Hopp & Orsen (1998) come in.