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Re: bauplan convergence

In a message dated 6/8/00 2:36:16 PM Pacific Daylight Time, 
Dinogeorge@aol.com writes:

> (Wonder why there are no flying 
>  spiders. Maybe the insects beat them to it?)

Insect wings appear to be derived from the gill branches of their walking 
legs.  Arachnids had already lost the gill branches from their walking legs 
before coming onto land, leaving them without suitable "sails" to develop 
into wings.

Nick P.