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Re: Ichthyornithidae?

To: "The Dinosaur Mailing List" <dinosaur@usc.edu>
Subject: Re: Ichthyornithidae?
From: "David Marjanovic" <david.marjanovic@gmx.at>
Date: Thu, 14 Mar 2002 20:50:00 +0100
References: <15a.a6c92d2.29c24e36@aol.com>
Reply-to: david.marjanovic@gmx.at
Sender: owner-dinosaur@usc.edu

After this time the seaway begins to recede and the more delicate fossils become rarer and rarer due to higher energy levels in the shallower water. DV

Thanks for the answer. So we simply don't know when they died out?

References:
- Re: Ichthyornithidae?
  - From: Danvarner@aol.com

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