Micro-structure on conus

[helmetapointe]

Somebody know the origin of this nice microstructure, found on some of my conus.

<img src="http://s2.noelshack.com/uploads/images/13522017692997_p1180369_4_forum.jpg" alt="http://s2.noelshack.com/uploads/images/13522017692997_p1180369_4_forum.jpg" style="border:0" />

[paul monfils]

These are bryozoan colonies, tiny invertebrates sometimes called "moss animals".

<a href="http://en.wikipedia.org/wiki/Bryozoa" target="_blank"><!-- m --><a class="postlink" href="http://en.wikipedia.org/wiki/Bryozoa">http://en.wikipedia.org/wiki/Bryozoa</a><!-- m --></a>

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[helmetapointe]

Thank you Paul, my consideration !