Lukas VFN 🇪🇺<p>500-million-year-old <a href="https://scholar.social/tags/fossil" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fossil</span></a> reveals how <a href="https://scholar.social/tags/starfish" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>starfish</span></a> got their shape <a href="https://phys.org/news/2025-06-million-year-fossil-reveals-starfish.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">phys.org/news/2025-06-million-</span><span class="invisible">year-fossil-reveals-starfish.html</span></a></p><p>A new <a href="https://scholar.social/tags/Cambrian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cambrian</span></a> stem-group echinoderm reveals the <a href="https://scholar.social/tags/evolution" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>evolution</span></a> of the anteroposterior axis: Stephanie Woodgate et al. <a href="https://www.cell.com/current-biology/fulltext/S0960-9822(25)00681-5" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">cell.com/current-biology/fullt</span><span class="invisible">ext/S0960-9822(25)00681-5</span></a></p><p>"The fossil, <a href="https://scholar.social/tags/Atlascystis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Atlascystis</span></a> acantha, is the oldest known <a href="https://scholar.social/tags/echinoderm" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>echinoderm</span></a> with a bilateral body plan. It bridges the evolutionary gap between the closest living relatives of <a href="https://scholar.social/tags/echinoderms" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>echinoderms</span></a>, all of which have bilateral symmetry, and the familiar five-armed forms alive today."</p>