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Re: ?Latest paper on the extinction of dinosaurs in North America

To: "DML" <dinosaur@usc.edu>
Subject: Re: ?Latest paper on the extinction of dinosaurs in North America
From: "David Marjanovic" <david.marjanovic@gmx.at>
Date: Tue, 20 Jan 2004 23:43:29 +0100
References: <20040120.134635.-958755.0.bigelowp@juno.com>
Reply-to: david.marjanovic@gmx.at
Sender: owner-dinosaur@usc.edu

> Whoops.  That's not correct.  Pearson et al. mapped the highest-occuring
> fossils in relation to the *palynological K-T boundary*, not to the
> iridium layer.

They do state, though (as I quoted), that the palynological boundary
coincides with the Ir spike. I just expect that they didn't do the
geochemistry for every single site.

References:
- Re: ?Latest paper on the extinction of dinosaurs in North America
  - From: Phil Bigelow <bigelowp@juno.com>

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