John Orcutt<p><a href="https://ecoevo.social/tags/FossilAdventCalendar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FossilAdventCalendar</span></a> Day 4</p><p>The oddest and - at over 560 million years in age - oldest <a href="https://ecoevo.social/tags/fossil" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fossil</span></a> featured in this <a href="https://ecoevo.social/tags/AdventCalendar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AdventCalendar</span></a> is Fractofusus misrai from <a href="https://ecoevo.social/tags/Newfoundland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Newfoundland</span></a> 🇨🇦. This specimen in the <a href="https://ecoevo.social/tags/RoyalOntarioMuseum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RoyalOntarioMuseum</span></a> is from <a href="https://ecoevo.social/tags/MistakenPoint" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MistakenPoint</span></a>, one of the sites preserving the <a href="https://ecoevo.social/tags/Ediacaran" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ediacaran</span></a> <a href="https://ecoevo.social/tags/biota" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>biota</span></a>, the term for some of our planet's oldest <a href="https://ecoevo.social/tags/multicellular" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multicellular</span></a> <a href="https://ecoevo.social/tags/fossils" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fossils</span></a>. Lots of questions remain about these ancient enigmas, among them, were <a href="https://ecoevo.social/tags/Ediacarans" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ediacarans</span></a> <a href="https://ecoevo.social/tags/animals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>animals</span></a> or members of a different branch of the tree of life?</p>