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In a message dated 95-11-30 17:42:13 EST, ornstn@inforamp.net (Ronald
Orenstein) writes:

>The biggest
>objection to the evolution of wings as escape structures for ground dwellers
>is that before they are big enough for real flight, extending them during
>running actually produces drag and reduces foot-to-ground contact, resulting
>in slowing the animal down, not speeding it up.  To give this up simply to
>make a slightly-longer-than-average jump is unlikely to be too useful as an
>escape mechanism, unless the prey can literally get out of the way be
>clearing an obstacle or reaching a refuge (like a tree, folks!).

Like I said, the physics of the situation is against it.