#fossiladventcalendar — Public Fediverse posts

#FossilAdventCalendar Day 19

It's appropriate that this #MarineLifeMonday our journey #north reaches the shores of #Hudson'sBay at #Churchill, #Manitoba 🇨🇦. It's here that the largest complete #trilobite #fossil ever found was uncovered from #Ordovician rocks. If you want to see the more than two foot long Isotelus rex in person, head to #Winnipeg's #ManitobaMuseum, where it's displayed in all its splendor.

#FossilAdventCalendar Day 12
#MarineLifeMonday

#BritishColumbia's 🇨🇦 #BurgessShale is one of our planet's most important important (and beautiful) #fossil sites. Sitting high in #BC's #RockyMountains, it's a window into the early evolution of #animals. Among its weird wonders is Hallucigenia (seen here in fossil and sculpture form at the #RoyalOntarioMuseum), a distant relative of #arthropods so unlike anything alive today that for years it was reconstructed upside down and backwards.

#FossilAdventCalendar Day 5
#MarineLifeMonday

Most #fish species alive today, from #salmon to #guppies, belong to a single group. In the #Devonian, though, many lineages were abundant. #Quebec's 🇨🇦 #ParcNationalDeMiguasha provides a glimpse of this #biodiversity, which includes #lungfish such as Scaumenacia curta, shown here in the #RoyalOntarioMuseum. Their lobed fins contain many of the same #bones as our arms, evidence that lungfish are much more closely related to us than to most other fish.