French naturalist <a href="//commons.wikimedia.org/wiki/Antoine_Risso" title="Antoine Risso">Antoine Risso</a> (1777-1845)
<p>Ambroise Tardieu (1788-1841)
</p>
See also page 10 <a rel="nofollow" class="external free" href="http://www.us.archive.org/GnuBook/?id=tudesynonymiqu00bour#17">http://www.us.archive.org/GnuBook/?id=tudesynonymiqu00bour#17</a>
Unknown date<div style="display: none;">Unknown date</div> (before 1841)
<a href="//commons.wikimedia.org/w/index.php?title=Jules_Ren%C3%A9_Bourguignat&amp;action=edit&amp;redlink=1" class="new" title="Jules René Bourguignat (page does not exist)">Bourguignat J. R.</a> 1861. <a rel="nofollow" class="external text" href="https://archive.org/details/tudesynonymiqu00bour"><i>Étude synonymique sur les mollusques des Alpes maritimes publiés par A. Risso en 1826</i></a>. Paris: J.B. Baillière. <a rel="nofollow" class="external text" href="http://www.us.archive.org/GnuBook/?id=tudesynonymiqu00bour#15">page 8</a>. (Cropped and retouched by <a href="//commons.wikimedia.org/wiki/User:Snek01" title="User:Snek01">User:Snek01</a>.)