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  1. So, after watching a video that Peter Larson posted on Instagram about nanotyrannus, I was pretty convinced that it is a valid genus. That got me wondering. Where does it fit in the tyrannosaur family tree? Is it more related to Tyrannosaurus rex, or another tyrannosaur? I saw an article that was trying to prove that Nanotyrannus was, instead of being in tyrannosauridae with animals like tyrannosaurus and tarbosaurus, it was in dryptosauridae with dryptosaurus and appalachiosaurus. I'm very curious about everyone else's opinions but I myself am rather convinced. links: Pete's post: https://www.instagram.com/tv/CjoNNdojfjp/?igshid=YmMyMTA2M2Y= Nanotyrannus article: http://psdinosaurs.blogspot.com/2021/08/evidence-of-subadult-nanotyrannus.html?m=1
  2. What is the most likely attributable identity for the Tyrannosauroid remains at Phoebus Landing of the Tar Heel Formation? What I am referring to specifically are bones documented in Baird and Horner's 1979 paper which speaks of a distal third of a right femur that is attributed to cf. Dryptosaurus and is smaller than the holotype of D. aquilunguis. It is also compared with Albertosaurus which shows similarities as well but that's expected with Eutyrannosaurs. Also there is another distal left femur of a tyrannosauroid shown to be found in a Hypsibema bonebed and originally attributed to the Hadrosaur taxon as a tibia but later revealed to be part of the femur of Tyrannosauroide Keep in mind at the time they were attributed to tyrannosauridae until dryptosaurus was shown to be part of an outgroup from the main family. My only question is, are these specimens possibly referrable to Appalachiosaurus instead of Dryptosaurus? It could be possible as the time of description of these specimens Appachiosaurus was not described yet. There are a few flags that could make such bones the cf. Appalachiosaurus instead, like the more pronounced medial condyle than that of Dryptosaurus which is smaller and less noticeable. This I noticed with specimen ANSP 15330. Although it is overrall smaller than the Dryptosaurus holotype this could be just a sign of it being in a juvenile ontogenetic stage. And despite being smaller not only is it's medial condyle larger, the politeal pit and the intercondylar fossa are deeper and more prominent. Although I cannot say the same for the larger left femur Cope mistakenly thought was a Hypibema tibia. This femur is larger than the Dryptosaurus holotype however it's fossa and processes aren't as pronounced. Although this could be attributed to the fact it is largely abraded and weathered. Here is the subadult Appalachiosaurus right femur from the holotype (ignore the left tibia included below it);
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