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AW: Dinosaur Fore Limb Posture & Evolution of Avian Flapping Flight Stroke

from Nudds RL, Dyke GJ.

"More fundamental to the origin of the avian flapping flight-stroke is the 
question of how a symmetrical forelimb posture â required for gliding and 
flapping flight â evolved from an alternating forelimb motion, evident in all 
extant bipeds when running except birds."

Would love to see a copy of this paper. Is this question answered therein? 

In the meantime, I'll refer you to these videos of bipedal lizards running on 
treadmills, some with very little forelimb motion, others with more.

So, perhaps, except birds and certain lizards in bipedal mode?


David Peters