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Re: four winged Archaeopteryx

Jaime A. Headden wrote:

>   Jim Cunningham asked about cascading effects, which I asusme would be 
> present
> in the tail as the airflow over the tail, especially at the end, would mimick
> that of extant birds' fanned tails, as well.

If so, this would greatly reduce the drag of the tail.  It might also somewhat
reduce the lift that the tail could generate.  Note that I don't postulate that 
ability existed, just point out that no one seems to have addressed the subject.