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Re: 11th specimen of Archaeopteryx
On Oct 27, 2011, at 4:30 AM, Don Ohmes wrote:
> I am agnostic on the limits on upstroke amplitude in basal birds due to
> limited data and skills -- I am just pointing out that if they were
> severely limited in the manner that I have read is ascribed to Arch.,
> then a path to powered flight that did not initially exploit gravity as
> the primary energy source rather than muscle power is not clear -- at
> least to me.
One possibility would be that flapping strokes evolved from a precursor
behavior in a more terrestrial realm. In other words, the proto-flyers might
not have been flying.
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