Angaria species

[ennss]

Any opinions on what this is?

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As per these notes:  <!-- m --><a class="postlink" href="http://conchylia.wordpress.com/differential-determination/">http://conchylia.wordpress.com/differen ... rmination/</a><!-- m -->
perhaps one of delphinus, aculeata or poppei? 

Any thoughts appreciated, thanks!

[paul monfils]

I believe it is Angaria aculeata.