Illustration of a shell of <i>Buccinum undatum</i> <small>Linnaeus, 1758<a rel="nofollow" class="external autonumber" href="http://www.marinespecies.org/aphia.php?p=taxdetails&amp;id=138878">[1]</a></small> and its operculum; named <b>common northern whelk</b> and originating from the North Atlantic.
<ul><li><small>This illustration has been edited with a white background replacing the old yellow background, on the page of the original illustration, and the mollusc's spiral was facing downwards and with a number beside it.</small></li></ul>
Dautzenberg, Ph.
1913
<i>Atlas de Poche des Coquilles des Côtes de France (Manche, Océan, Méditerranée) Communes, Pittoresques ou Comestibles</i>; pl. 4. Edicted in 1913. (<a rel="nofollow" class="external text" href="https://archive.org/details/atlasdepochedesc00dau/page/n17/mode/1up?view=theater">Internet Archive</a>).