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#fossiladventcalendar

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John Orcutt<p><a href="https://ecoevo.social/tags/FossilAdventCalendar" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FossilAdventCalendar</span></a> Day 12<br><a href="https://ecoevo.social/tags/MarineLifeMonday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MarineLifeMonday</span></a></p><p><a href="https://ecoevo.social/tags/BritishColumbia" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BritishColumbia</span></a>'s 🇨🇦 <a href="https://ecoevo.social/tags/BurgessShale" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BurgessShale</span></a> is one of our planet's most important important (and beautiful) <a href="https://ecoevo.social/tags/fossil" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fossil</span></a> sites. Sitting high in <a href="https://ecoevo.social/tags/BC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BC</span></a>'s <a href="https://ecoevo.social/tags/RockyMountains" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RockyMountains</span></a>, it's a window into the early evolution of <a href="https://ecoevo.social/tags/animals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>animals</span></a>. Among its weird wonders is Hallucigenia (seen here in fossil and sculpture form at the <a href="https://ecoevo.social/tags/RoyalOntarioMuseum" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RoyalOntarioMuseum</span></a>), a distant relative of <a href="https://ecoevo.social/tags/arthropods" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>arthropods</span></a> so unlike anything alive today that for years it was reconstructed upside down and backwards.</p>
John Orcutt<p><a href="https://ecoevo.social/tags/FossilAdventCalendar" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FossilAdventCalendar</span></a> Day 11</p><p>The <a href="https://ecoevo.social/tags/badlands" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>badlands</span></a> of eastern and central <a href="https://ecoevo.social/tags/Alberta" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Alberta</span></a> 🇨🇦 are probably the best place in the world to find <a href="https://ecoevo.social/tags/hadrosaurs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hadrosaurs</span></a> ("duck-billed" <a href="https://ecoevo.social/tags/dinosaurs" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dinosaurs</span></a> like this <a href="https://ecoevo.social/tags/Hypacrosaurus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hypacrosaurus</span></a> in the <a href="https://ecoevo.social/tags/CanadianMuseumOfNature" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CanadianMuseumOfNature</span></a>). While they're immediately recognizable by their broad mouths and (in many species) large crests, their <a href="https://ecoevo.social/tags/teeth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>teeth</span></a> also set them apart. Their large, grinding teeth allowed them to chew their food, a behavior that's the norm in us mammals but rare in other <a href="https://ecoevo.social/tags/animals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>animals</span></a>.</p>
John Orcutt<p><a href="https://ecoevo.social/tags/FossilAdventCalendar" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FossilAdventCalendar</span></a> Day 10 (belated, thanks to a busy weekend)</p><p>It's no secret what <a href="https://ecoevo.social/tags/DinosaurProvincialPark" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DinosaurProvincialPark</span></a>, <a href="https://ecoevo.social/tags/Alberta" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Alberta</span></a> 🇨🇦 is famous for, but it's the <a href="https://ecoevo.social/tags/plants" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>plants</span></a> from this <a href="https://ecoevo.social/tags/WorldHeritageSite" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WorldHeritageSite</span></a> that tell the clearest story about this <a href="https://ecoevo.social/tags/Cretaceous" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cretaceous</span></a> <a href="https://ecoevo.social/tags/ecosystem" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecosystem</span></a>. <a href="https://ecoevo.social/tags/PetrifiedWood" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PetrifiedWood</span></a> like this, along with other aspects of the park's <a href="https://ecoevo.social/tags/geology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geology</span></a> and <a href="https://ecoevo.social/tags/paleontology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>paleontology</span></a>, paint a picture of a low-lying coastal <a href="https://ecoevo.social/tags/wetland" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>wetland</span></a>, perhaps similar to the <a href="https://ecoevo.social/tags/bayous" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bayous</span></a> of the modern Gulf Coast.</p>
John Orcutt<p><a href="https://ecoevo.social/tags/FossilAdventCalendar" class="mention hashtag" rel="nofollow noopener" 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" target="_blank">#<span>fossil</span></a> featured in this <a href="https://ecoevo.social/tags/AdventCalendar" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AdventCalendar</span></a> is Fractofusus misrai from <a href="https://ecoevo.social/tags/Newfoundland" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Newfoundland</span></a> 🇨🇦. This specimen in the <a href="https://ecoevo.social/tags/RoyalOntarioMuseum" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RoyalOntarioMuseum</span></a> is from <a href="https://ecoevo.social/tags/MistakenPoint" class="mention hashtag" rel="nofollow noopener" 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" target="_blank">#<span>Ediacaran</span></a> <a href="https://ecoevo.social/tags/biota" class="mention hashtag" rel="nofollow noopener" 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" target="_blank">#<span>multicellular</span></a> <a href="https://ecoevo.social/tags/fossils" class="mention hashtag" rel="nofollow noopener" 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" target="_blank">#<span>Ediacarans</span></a> <a href="https://ecoevo.social/tags/animals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>animals</span></a> or members of a different branch of the tree of life?</p>
John Orcutt<p><a href="https://ecoevo.social/tags/FossilAdventCalendar" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FossilAdventCalendar</span></a> Day 2<br><a href="https://ecoevo.social/tags/FossilFriday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FossilFriday</span></a></p><p>Heading north along <a href="https://ecoevo.social/tags/Ontario" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Ontario</span></a>'s 🇨🇦 <a href="https://ecoevo.social/tags/NiagaraEscarpment" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NiagaraEscarpment</span></a> brings us to the <a href="https://ecoevo.social/tags/BrucePeninsula" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BrucePeninsula</span></a>, where these <a href="https://ecoevo.social/tags/Silurian" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Silurian</span></a> <a href="https://ecoevo.social/tags/scorpions" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>scorpions</span></a> were found. Displayed in and named by scientists at the <a href="https://ecoevo.social/tags/RoyalOntarioMuseum" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RoyalOntarioMuseum</span></a>, Eramoscorpius brucensis lived in the <a href="https://ecoevo.social/tags/ocean" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ocean</span></a>, but its relatives were among the first <a href="https://ecoevo.social/tags/animals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>animals</span></a> on land. Its sturdy legs and the locality at which these <a href="https://ecoevo.social/tags/fossils" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fossils</span></a> were found hint that this <a href="https://ecoevo.social/tags/marine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>marine</span></a> <a href="https://ecoevo.social/tags/scorpion" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>scorpion</span></a> may have already been venturing onto <a href="https://ecoevo.social/tags/beaches" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>beaches</span></a> to <a href="https://ecoevo.social/tags/molt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>molt</span></a>.</p>