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In a message dated 95-12-01 19:40:34 EST, Robert.J.Meyerson@uwrf.edu (Rob
Meyerson) writes:

>There are only three terrestrial vertebrates that have ever evolved flight:=
> Birds, Bats, and Pterosaurs.  I know that both bird and bat evolution is=
> shotty at best, but how much do we know about pterosaur evolution?  Do we=
> have good (or any) transitional fossils for this group?  If we did, we=
> might be able to pull an idea or two from them.  Any thoughts from the=
> pterosaur experts?

If anything, the pterosaur fossil record is even worse--equally bad in the
sense that the transitional forms just haven't been recognized. But their
fossil record also hints, for example, that pterosaurs aren't the archosaurs
we all thought they were (shudder).