<i>Ancula cristata</i> <small>(Lovén)</small> = <i><a href="//commons.wikimedia.org/w/index.php?title=Ancula_gibbosa&amp;action=edit&amp;redlink=1" class="new" title="Ancula gibbosa (page does not exist)">Ancula gibbosa</a></i> <small>(Risso, 1818)</small>
<bdi><a href="https://en.wikipedia.org/wiki/en:Ernst_Haeckel" class="extiw" title="w:en:Ernst Haeckel"><span title="German biologist, naturalist, philosopher, physician, and artist (1834-1919)">Ernst Haeckel</span></a>
</bdi>
1904
<i>Kunstformen der Natur</i> (1904), plate 43: Nudibranchia (see <a rel="nofollow" class="external text" href="http://caliban.mpiz-koeln.mpg.de/haeckel/kunstformen/high/Tafel_043_300.html">here</a>, <a rel="nofollow" class="external text" href="http://caliban.mpiz-koeln.mpg.de/haeckel/kunstformen/high/Tafel_043_text_1_200.html">here</a> and <a rel="nofollow" class="external text" href="http://caliban.mpiz-koeln.mpg.de/haeckel/kunstformen/high/Tafel_043_text_2_200.html">here</a>). Cropped from the <a href="//commons.wikimedia.org/wiki/File:Haeckel_Nudibranchia.jpg" title="File:Haeckel Nudibranchia.jpg">File:Haeckel Nudibranchia.jpg</a>.