>Havent read much about extinction events after the Chixulub crater was found
>and several books written re: Dinos, Chixulub and the KT. I assume the
>debating is alive and well.
>
>Has anyone proposed, with some evidence, other crater/event relationships
>to the rest of the "Big Five"?

Some have proposed that all such mass-extinctions were
impact-related. However the only one for which there is evidence of
such a cause is the K-T. The others were all of other causes.
--
Andrew Grebneff
165 Evans St, Dunedin, New Zealand
64 (3) 473-8863
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Fossil preparator
Seashell, Macintosh & VW/Toyota van nut
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