Stefan F. Wirth<p><a href="https://biologists.social/tags/Snails" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Snails</span></a> are primarily marine <a href="https://biologists.social/tags/mollusks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mollusks</span></a>. According to current hypotheses, the <a href="https://biologists.social/tags/sistergroup" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sistergroup</span></a> might be <a href="https://biologists.social/tags/Cephalopoda" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cephalopoda</span></a> plus <a href="https://biologists.social/tags/Scaphopoda" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Scaphopoda</span></a> (Link below) . One <a href="https://biologists.social/tags/Apomorphy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Apomorphy</span></a>, i.e. evolutionary new acquisitions of the stemspecies, is the <a href="https://biologists.social/tags/asymmetrical" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>asymmetrical</span></a> <a href="https://biologists.social/tags/shell" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>shell</span></a> that is wound in one direction, which is due to a <a href="https://biologists.social/tags/torsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>torsion</span></a> of the <a href="https://biologists.social/tags/mantle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mantle</span></a> and visceral sac.<br>The species in my <a href="https://biologists.social/tags/photos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photos</span></a> is <a href="https://biologists.social/tags/Cornu" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cornu</span></a> <a href="https://biologists.social/tags/aspersum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aspersum</span></a> from Italy. <a href="https://biologists.social/tags/biodiversity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>biodiversity</span></a>,<br>© <a href="https://biologists.social/tags/StefanFWirth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>StefanFWirth</span></a> Berlin 2025</p><p>Reference</p><p>Sumner-Rooney et al. (2015):<br><a href="https://doi.org/10.1111%2Fede.12164" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">doi.org/10.1111%2Fede.12164</span><span class="invisible"></span></a></p>