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Re: Dinosaur Extinction Theories

 From: pwillis@ozemail.com.au (Paul Willis)
 >  ... Any scenario that focuses purely on the
 > dinosaur extinction at the K-T boundary is almost certainly doomed to
 > failure because they do not assess the whole problem; the mass extinction
 > of many different types of animal and plants in very different
 > environments. Personally, I use this as a yard stick in assessing any
 > extinction scenario proposed for the K-T extinction. ...

Quite so.  I, too, use this yardstick.  That is why the causes
I currently consider viable are:

        - the Deccan volcanism
        - the marine regression
        - a meteorite impact (?at Chix.)

Most others fail to cover the whole span of extinctions.

swf@elsegundoca.attgis.com              sarima@netcom.com

The peace of God be with you.