Identification help

[jacquie]

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I have a rather large shell and I can't find anything like it on any website. I'm no expert but I think it's pretty unique. I'd just like to know what it is and possible how to get rid of the slightly funky aroma that it has but I obviously don't want to damage it. I'd really appreciate someones help!  Thank you!!! <img src="images/smiley/bye.gif" alt="" border="0" />

<a href="http://members.cox.net/mollusca/Casmad1.jpg" target="_blank"><!-- m --><a class="postlink" href="http://members.cox.net/mollusca/Casmad1.jpg">http://members.cox.net/mollusca/Casmad1.jpg</a><!-- m --></a>
<a href="http://members.cox.net/mollusca/Casmad2.jpg" target="_blank"><!-- m --><a class="postlink" href="http://members.cox.net/mollusca/Casmad2.jpg">http://members.cox.net/mollusca/Casmad2.jpg</a><!-- m --></a>  <span class="petit">--Last edited by Paul Monfils on 2009-05-25 21:10:47 --</span>