A better photo and request for identification

[wil9000]

Here is a better photo of a shell that I asked for help with earlier, this time inside and outside.
<a href="http://www.flickr.com/photos/wil9000/4861227582/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4861227582/">http://www.flickr.com/photos/wil9000/4861227582/</a><!-- m --></a>

Also, there's this clam:
<a href="http://www.flickr.com/photos/wil9000/4860606897/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4860606897/">http://www.flickr.com/photos/wil9000/4860606897/</a><!-- m --></a>
I have no clue about it.

And, there's this clam, only one half. The third picture shows how huge the hinge is.
<a href="http://www.flickr.com/photos/wil9000/4860607169/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4860607169/">http://www.flickr.com/photos/wil9000/4860607169/</a><!-- m --></a>
<a href="http://www.flickr.com/photos/wil9000/4861227420/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4861227420/">http://www.flickr.com/photos/wil9000/4861227420/</a><!-- m --></a>
<a href="http://www.flickr.com/photos/wil9000/4861227264/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/wil9000/4861227264/">http://www.flickr.com/photos/wil9000/4861227264/</a><!-- m --></a>

Thank you again. You guys are amazing!

[dave r]

I am assuming these are European? The first is Spisula solida and the second Mya arenaria.
Dave

[paul monfils]

I believe Dave meant to say the third shell is Mya arenaria.  This and the Spisula are both marine species.  Mya arenaria is also abundant in the eastern United States, where I live.  It is a commercially important species here.  The second one however, with the black flaky periostracum, is a fresh water species.  I am not sure of the species.  <span class="petit">--Last edited by Paul Monfils on 2010-08-05 19:52:23 --</span>

[dave r]

Yes, sorry guys I meant the third! I see you are in the U.S., the other clam looks like an Elliptio. Google it up and see. Do you have a locality for it?

[dave r]

Looks like it could be crassidens, check out this website:
<a href="http://www.jaxshells.org/wmf2006.htm" target="_blank"><!-- m --><a class="postlink" href="http://www.jaxshells.org/wmf2006.htm">http://www.jaxshells.org/wmf2006.htm</a><!-- m --></a>
Dave