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Re: How did dromaeosaurs use their arms?
I can think of no extant cursorial animals whatsoever that have featherlike
or hairlike forelimb structures for ground-based maneuverability that didn't
already have them because they're descended from flying ancestors--and such
forelimb structures are usually vestigialized.
I'm afraid this isn't much of a point, because there are no living
feathered creatures that are not birds. Therefore ALL feathered creatures
living today are descended from flying ancestors.
Ronald I. Orenstein Phone: (905) 820-7886
International Wildlife Coalition Fax/Modem: (905) 569-0116
1825 Shady Creek Court
Mississauga, Ontario, Canada L5L 3W2 mailto:email@example.com