lone5wolf117 Posted December 12, 2017 Share Posted December 12, 2017 Does anyone know the ID of his tooth ? its form Yixian formation looking at it I can say its belong to a tyrannosaurid has its robust has well. TB2uUNSbAfb_uJkSnb4XXXCrXXa_!!23247098.jpg_600x600Q50s50.jpg_.webp TB2RAKDgsLJ8KJjy0FnXXcFDpXa_!!23247098.jpg_600x600Q50s50.jpg_.webp TB2PCuBcdHO8KJjSZFHXXbWJFXa_!!23247098.jpg_600x600Q50s50.jpg_.webp Link to comment Share on other sites More sharing options...
izak_ Posted December 12, 2017 Share Posted December 12, 2017 I can't view those images, could you upload them to the thread? Link to comment Share on other sites More sharing options...
Troodon Posted December 12, 2017 Share Posted December 12, 2017 Not familiar with large theropods from Yixian formation and the only one I'm aware of is Yutyrannus which is a tyrannosaurid. I tried to do some research but saw nothing describing its teeth. It's difficult to determine how much of the tooth you have but would guess 75% which makes it very large for that fauna. How long is this tooth and is a picture of the base possible. These are the best images of Yutyrannus teeth I could find but do not have a scale for them. These are the two holotype specimens. There are definitely some affinities with your tooth just in general shape but cannot say more than that. Would need to compare it's denticle shape and density with your specimen for more definitive proof. Photos from supplementary information A gigantic feathered dinosaur from the Lower Cretaceous of China Xing Xu, Kebai Wang, Ke Zhang, Qingyu Ma, Lida Xing, Corwin Sullivan, Dongyu Hu, Shuqing Cheng & Shuo Wang Nature 484, 92–95 (05 April 2012) doi:10.1038/nature10906 5 Link to comment Share on other sites More sharing options...
lone5wolf117 Posted December 12, 2017 Author Share Posted December 12, 2017 Sure @Troodon I take the base of the tooth and the length of it when am back form my vacation. When I first saw the tooth its was label has a dilong tooth ? but its can't be one has too robust and seem large. Link to comment Share on other sites More sharing options...
Troodon Posted December 12, 2017 Share Posted December 12, 2017 10 minutes ago, lone5wolf117 said: Sure @Troodon I take the base of the tooth and the length of it when am back form my vacation. When I first saw the tooth its was label has a dilong tooth ? but its can't be one has too robust and seem large. Correct tooth is much to large for Dilong. Link to comment Share on other sites More sharing options...
lone5wolf117 Posted December 29, 2017 Author Share Posted December 29, 2017 @Troodon here is the base of the tooth and the length of the tooth is 1.5 cm. Link to comment Share on other sites More sharing options...
Troodon Posted December 29, 2017 Share Posted December 29, 2017 I cannot find any information on the teeth of Yutyrannus so all have are the holotype images which are not adequate to ID your specimen. Without knowing the characteristics of Yutyrannus teeth it's difficult to get an answer. I think there is a reasonable possibility it is one since nothing is currently described in that fauna that would fit your tooth size being a partial crown other than Yutyrannus and there are some affinities with the holotype. Link to comment Share on other sites More sharing options...
lone5wolf117 Posted December 29, 2017 Author Share Posted December 29, 2017 Thanks @Troodon i checked the formation the only large tyrannosaurid thats fit the tooth is possibly Yutyrannus too i agree with that. Link to comment Share on other sites More sharing options...
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