What is this Bivalve??

[doktor d]

Can anyone tell me what this bivalve is? I can't find it on any online identification charts and whatnot.

<a href="http://www.putfile.com/pic.php?img=5572838" target="_blank"><img src="http://img2.putfile.com/thumb/5/14922030039.jpg" alt="http://img2.putfile.com/thumb/5/14922030039.jpg" style="border:0" /></a>
<a href="http://www.putfile.com/pic.php?img=5572839" target="_blank"><img src="http://img2.putfile.com/thumb/5/14922030046.jpg" alt="http://img2.putfile.com/thumb/5/14922030046.jpg" style="border:0" /></a>
<a href="http://www.putfile.com/pic.php?img=5572840" target="_blank"><img src="http://img2.putfile.com/thumb/5/14922030173.jpg" alt="http://img2.putfile.com/thumb/5/14922030173.jpg" style="border:0" /></a>
<a href="http://www.putfile.com/pic.php?img=5572841" target="_blank"><img src="http://img2.putfile.com/thumb/5/14922030161.jpg" alt="http://img2.putfile.com/thumb/5/14922030161.jpg" style="border:0" /></a>  <span class="petit">--Last edited by Doktor D on 2007-05-31 04:35:19 --</span>

[paul monfils]

Hi,

This is Laevicardium elatum, the "Giant Pacific Cockle", or "Giant Egg Cockle" from West Central America or West Mexico.  <span class="petit">--Last edited by Paul Monfils on 2007-05-31 05:10:28 --</span>