Does someone know what any of these are?

[hleigh99]

Hello,
Can anyone identify any of these 6 shells? One is a fossil and 2 have been formed into jewlery while the other 3 are left natural.

Shell 1 fossil

<a href="http://www.badongo.com/pic/8581216" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581216">http://www.badongo.com/pic/8581216</a><!-- m --></a>
<a href="http://www.badongo.com/pic/8581225" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581225">http://www.badongo.com/pic/8581225</a><!-- m --></a>

Shell 2 necklace
<a href="http://www.badongo.com/pic/8581237" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581237">http://www.badongo.com/pic/8581237</a><!-- m --></a>
<a href="http://www.badongo.com/pic/8581255" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581255">http://www.badongo.com/pic/8581255</a><!-- m --></a>

Shell 3 bracelet
<a href="http://www.badongo.com/pic/8581348" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581348">http://www.badongo.com/pic/8581348</a><!-- m --></a>

Shell 4
<a href="http://www.badongo.com/pic/8581284" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581284">http://www.badongo.com/pic/8581284</a><!-- m --></a>

Shell 5
<a href="http://www.badongo.com/pic/8581311" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581311">http://www.badongo.com/pic/8581311</a><!-- m --></a>

Shell 6 3 views of the same shell
<a href="http://www.badongo.com/pic/8581336" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581336">http://www.badongo.com/pic/8581336</a><!-- m --></a>
<a href="http://www.badongo.com/pic/8581327" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581327">http://www.badongo.com/pic/8581327</a><!-- m --></a>
<a href="http://www.badongo.com/pic/8581342" target="_blank"><!-- m --><a class="postlink" href="http://www.badongo.com/pic/8581342">http://www.badongo.com/pic/8581342</a><!-- m --></a>

I can't thank you enough for your help.