|
?:reviewBody
|
-
A social media post claiming to have described the discovery of a mummified dinosaur found in Tennessee — and so-named the Appalachiosaurus — is a dud. Spoiler alert: the post was shared to Facebook on April 1, 2022. (As if a 77-million-year-old carcass neatly placed on the ground wasn't enough of a dead giveaway.) While the dinosaur featured in the Facebook post was a joke, we discovered that the claims made within it are very much sourced in legitimate paleontological discoveries. More on that below. But before diving into the fossil record, a quick look at the April Fools' joke post that, as of this writing, had been shared more than 104,000 times: It was shared to the Facebook group Growing Up In East Tennessee with three photos of what appeared to be a dinosaur mummy, along with another image that looked to be a digital reconstruction. Along with the photos was the following description: In a pinned post to the Facebook group, Dusty Worley, who originally posted the Appalachiosaurus prank, apologized to the group, adding that it was a fake post made for April Fool’s day. Though the post was made in jest, such a claim isn’t that far of a stretch from the truth. A reverse image search of the supposed photographs did not return any notable results. To determine whether they were staged or digitally altered, we contacted Worley, who confirmed that the images were taken from DinoMuseum Altmühltal, a dinosaur museum in Denkendorf, Germany. When we plugged the digital reconstruction into the image search engine Tineye, we were given this result, which led us to the digital portfolio website Art Station of 3D artist Cindy Raggo, who created the digital reconstruction in 2020. A description accompanying the Raggo’s image noted that was personal work and not related to Prehistoric Kingdom. But, it did represent a real dinosaur. Appalachiosaurus is a tyrannosauroid from the Late Cretaceous. It’s known from fragmentary remains from the Demopolis Chalk formation is what is now Alabama. Material assigned to Appalachiosaurus has also been found in the Carolinas, wrote Raggo. A Google search led us to the Australian Museum, which has a page dedicated to the real Appalachiosaurus montgomeriensis. The genus name Appalachiosaurus means 'lizard from Appalachia', in reference to the mountain region where the fossils were found. Montgomeri honours Alabama's Montgomery County and ensis is the Latin suffix meaning 'from', wrote the museum. Appalachiosaurus montgomeriensis is the first and most complete tyrannosaur known from the eastern USA. It is smaller than its relatives Albertosaurus and Gorgosaurus. The original specimen was found in 1982 in marine sediments, mainly chalk, and encapsulated with fine clay and marine plankton that led researchers to believe the dinosaur died on land and was washed out to sea where it rested some 300 feet below the surface of the ocean. But it wasn’t until 2005 that paleontologists with Auburn University determined the fossilized remains represented a new genus and species of tyrannosaur. A. montgomeriensis was subsequently described in the peer-reviewed Journal of Vertebrate Paleontology, which was authored by, among others, David Schwimmer (no, not that David Schwimmer). Though the only known specimen was a juvenile just two-thirds grown, it is thought that the dinosaur could grow up to 26 feet in adulthood. Described as having a long, narrow skull with a shallow jaw and probably short, stunted arms with two fingers, A. montgomeriensis likely lived in the densely wooded rainforest of the Appalachian region some 76 to 80 million years ago. Given its moderate size, paleontologists believe it was an ambush predator that waited within the trees before surprising its prey. While the fossilized remains of the real A. montgomeriensis weren’t mummified, our dive into the fossil record revealed that experts have, indeed, discovered dinosaurs with flesh still intact. As we have previously reported, mummified fossils are those whose soft tissues were preserved rather than decomposed before undergoing petrification. One such example was a real dinosaur mummy discovered by mistake in 2011 when a heavy equipment operator at a Canadian mine accidentally extracted fossilized skin from an armored Nodosaurus, a type of ankylosaur. Smithsonian Magazine reported six years later that the fossil remains were incredibly lifelike, resembling a sleeping dragon. National Geographic sponsored the excavation of the 110-million-year-old fossil specimen, Borealopelta markmitchelli i, and noted that the preservation of its armored plates and scales were the equivalent of the Rosetta stone for [dinosaur] armor. At the microscopic level, bits of red pigment remained that helped scientists determine the dinosaur’s coloring while keratin preserved in the armor clued scientists into the dinosaur’s biological makeup. Other very intact dinosaurs have been discovered, like the ankylosaur dubbed Zuul discovered by the Royal Ontario Museum in Montana whose armor plates, skin, and tail club remained. In 2021, scientists were able to reconstruct the Carnotaurus, carnivorous bull, after studying in detail the fossilized skin from remains first discovered in 1984. In summary, while the widely circulated Facebook post was not itself factual, some of its components were based in fact.
(en)
|
![[This page as RDF]](http://data.gesis.org/claimskg/static/rdf-icon.gif){kind=icon}