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Re: Comments on _Longisquama_ in _Science_.

In a message dated 6/27/00 8:49:39 PM, stonebugdotnet@yahoo.com writes:

<< Great White is endothermic?  I understood tuna are,
but never heard that applied to swordfish (despite
their being fairly closely related). >>

Several species of mackerel shark are and so are the billfish. That's when I 
began to doubt a lot of characterizations like "sharks are primitive and 
haven't changed in hundreds of millions of years." The Great White is the 
most advanced thing with gills.

eric l.