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Re: Placental takeover: nowhere-near-final comment

In a message dated 5/29/01 10:59:48 AM EST, david.marjanovic@gmx.at writes:

<< But a theory of mass extinctions. Plural here because there's (less)
 evidence for impacts as the cause for several other mass extinction (P-Tr,
 Tr-J...) >>

Persons interested in the frequency of bolide impacts might get a kick out of 
the following today's New York Times science article: