11-04-2011, 02:35 AM
Any opinions on this shell? Is it archithalassus or pseudocedonulli?  Picture could be better - there is coronation on the shoulder (white bumps), and it's 33mm.
Referring to these pages, I can't tell what the defining difference would be:
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<!-- m --><a class="postlink" href="http://www.gastropods.com/3/Shell_5293.shtml">http://www.gastropods.com/3/Shell_5293.shtml</a><!-- m -->
Referring to these pages, I can't tell what the defining difference would be:
<!-- m --><a class="postlink" href="http://www.gastropods.com/1/Shell_27401.shtml">http://www.gastropods.com/1/Shell_27401.shtml</a><!-- m -->
<!-- m --><a class="postlink" href="http://www.gastropods.com/3/Shell_5293.shtml">http://www.gastropods.com/3/Shell_5293.shtml</a><!-- m -->