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<p>shell.</p>

<p><big> Taphonomic implications </big></p>
<p>In large enough quantities, gastropod shells can have enough of an impact on environmental conditions to affect the ability of organic remains in the local environment to fossilize. For example, in the <a href="page.php?w=Dinosaur_Park_Formation">Dinosaur Park Formation</a>, fossil hadrosaur eggshell is rare. This is because the breakdown of <a href="page.php?w=tannins">tannins</a> from local <a href="page.php?w=coniferous">coniferous</a> vegetation would have caused the ancient waters to become</p><p>
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