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Re: Comments on _Longisquama_ in _Science_.
In a message dated 6/27/00 6:57:06 PM, firstname.lastname@example.org writes:
<< Furthermore, one could argue (as has been done, although I
forget the reference) that endothermy evolved only once since it is also
very complicated and yet it appears that mammals and birds (and perhaps
dinosaurs and pterosaurs) all developed it. >>
Not to mention swordfish and the great white shark.