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Re: "Meteor theory gets rocky ride from dinosaur expert"

A simple question is, what is the fossil record in the intervening 300,000

Mass extinctions don't always happen instantaneously.   Environmental
changes over half a million years could ahve had such an effect, and it
would look pretty instantaneous from our point of view.

I suspect that the end-Paleozoic extinction actually took some time.
Organisms still around in the early Mesozoic faced a drastically changed
climate; cool and dry.   Even desertlike.
Dora Smith
Austin, Texas
----- Original Message -----
From: "jrc" <jrccea@bellsouth.net>
To: <MKIRKALDY@aol.com>
Cc: <dinosaur@usc.edu>
Sent: Tuesday, May 24, 2005 4:05 PM
Subject: Re: "Meteor theory gets rocky ride from dinosaur expert"

> Keller never gives up, does she?
> Jim
> ----- Original Message -----
> From: <MKIRKALDY@aol.com>
> To: <dinosaur@usc.edu>
> > "A team led by palaeontologist Gerta Keller of Princeton University, New
> > Jersey, reported that a sediment core drilled in east Texas emphatically
> > confirms a study that the group released two years ago.