Joebiwan3 Posted December 13, 2019 Share Posted December 13, 2019 Hey everyone this next tooth in my collection was sold to me as a possible Dromaeosaurus Albertensis from the judith river formation in Hill co Mt. Its size is 5/8"....CH is 16 mm, the anterior serrations are 9 per 2 mm and the posterior serrations are 8 per 2 mm.....again sorry for the finger placement in some of the pics...in trying to get the best shots i can for you all. @Troodon Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Link to comment Share on other sites More sharing options...
Troodon Posted December 13, 2019 Share Posted December 13, 2019 Love to help you on this one but the photos are awful, most are well out of focus and dark. come back with better one. Use putty which is available on line or at hobby shops to hold the tooth. Having said this tooth looks more like a Tyrannosaurid than Dromaeosaurus so this analysis needs to be done 1 Link to comment Share on other sites More sharing options...
Troodon Posted December 13, 2019 Share Posted December 13, 2019 Tools like this are super to aid collectors with identification and are cheap. 2 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 I just purchased this as well as some putty. I will have better photos of this tooth tomorrow night. Link to comment Share on other sites More sharing options...
Troodon Posted December 13, 2019 Share Posted December 13, 2019 Thanks just want to get good results and ambiguous ones Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 13, 2019 Author Share Posted December 13, 2019 Yup for sure. Let get as close to 100% as we can....in the meantime ill post another tooth tonight....any other equipement i could get that will help in classification? And if this turns out to be tyrannosaurid tooth what are we looking at? Gorgosaurus or daspletosaurus? Link to comment Share on other sites More sharing options...
Troodon Posted December 13, 2019 Share Posted December 13, 2019 1 hour ago, Joebiwan3 said: tyrannosaurid tooth what are we looking at? Gorgosaurus or daspletosaurus Yes 1 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 @Troodon after looking under the usb microscope CH is 15 mm....posterior serrations are 18 per 4 mm....and anterior serrations are 20 per 4 mm. Museum putty did not come in yet so i tried my best to get fingers out of the way for everyone. 1 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 Link to comment Share on other sites More sharing options...
Troodon Posted December 15, 2019 Share Posted December 15, 2019 Now that's more like it, those USB scopes take the guesswork out and provide very clear images. I use blu tack putty for photos, found that museum one too sticky but definitely try it. I'm leaning toward this being a Tyrannosaurid tooth. The serration count difference is very small but the another indicator is the shape of the denticles, not Dromaeosaurus. P. Currie in one of his papers remarked how similar the teeth were of Tyrannosaurs and Dromaeosaurus and a differentiator was the shape of the dentical Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 What shape should i be looking for in the denticles? Where can i find that paper by currie? And what would you label this tooth then? Link to comment Share on other sites More sharing options...
Troodon Posted December 15, 2019 Share Posted December 15, 2019 ID: "Tyrannosaurid indet" I have to look up that paper will let you know. Serration from the book below Good book that has a chapter devoted to small theropod teeth from the old JRF in alberta, since it's an old publication Link to comment Share on other sites More sharing options...
Joebiwan3 Posted December 15, 2019 Author Share Posted December 15, 2019 Great, i have this book. Ill check out that chapter later......ill post another one tonight. So for this particular tooth being tyrannosaurid indet its either a gorgosaurus or a daspletosaurus as we said earlier correct? Would the small size indicate a juvenile? Link to comment Share on other sites More sharing options...
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