[meteorite-list] Cyclic mass extinction?

From: Dave <Dave_at_meteoritecentral.com>
Date: Thu Apr 22 10:00:10 2004
Message-ID: <001701c23429$8f3f77c0$2ceefccc_at_dave>

Hi:

Actually, there's even some skepticism about whether or not the "26 million
year periodicity" is even real. It's certainly not clockwork. Scientific
American has some interesting stuff about this at
<http://www.sciam.com/askexpert_topic.cfm?topicID=22>. Scroll down the page
about 2/3 of the way and look for the FAQ question about it. There are a
couple of other questions there that some listees might find of interest,
too.

Dave Hostetter
Curator of the Planetarium
Lafayette (LA) Natural History Museum and Planetarium

> Hi Al, Tracy, Edward and others interested in the mass extinction
> periodicity
> problem...
>
Received on Thu 25 Jul 2002 06:21:00 PM PDT