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Re: Comments on _Longisquama_ in _Science_.

In a message dated 6/27/00 6:57:06 PM, mbonnan@hotmail.com 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.

eric l.