Having a shell of a time identifying these!

[kashka]

Sorry for the pun! <img src="images/smiley/smile.gif" alt="" border="0" />..I am very new to seashells and I don't know where to start.This afternoon I found these in a local shop and as I collect everything from rocks to feathers I was thinking these would be another great thing to add to the shelves.Unfortunately living smack in the middle of the Canadian prairie I don't get to see or find many great shells like I have seen on this forum.So I was wondering if you kind people could give me a start..thanks so much n advance..<img src="images/smiley/smile.gif" alt="" border="0" />
lisa
(I have included a front and back photo of each)
<a href="http://www.mts.net/~kashka/a.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/a.JPG">http://www.mts.net/~kashka/a.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/a2.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/a2.JPG">http://www.mts.net/~kashka/a2.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/b.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/b.JPG">http://www.mts.net/~kashka/b.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/b2.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/b2.JPG">http://www.mts.net/~kashka/b2.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/c.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/c.JPG">http://www.mts.net/~kashka/c.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/c2.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/c2.JPG">http://www.mts.net/~kashka/c2.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/d.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/d.JPG">http://www.mts.net/~kashka/d.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/d2.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/d2.JPG">http://www.mts.net/~kashka/d2.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/e.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/e.JPG">http://www.mts.net/~kashka/e.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/e2.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/e2.JPG">http://www.mts.net/~kashka/e2.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/f.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/f.JPG">http://www.mts.net/~kashka/f.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/f2.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/f2.JPG">http://www.mts.net/~kashka/f2.JPG</a><!-- m --></a>
<a href="http://www.mts.net/~kashka/f3.JPG" target="_blank"><!-- m --><a class="postlink" href="http://www.mts.net/~kashka/f3.JPG">http://www.mts.net/~kashka/f3.JPG</a><!-- m --></a>