njcreekhunter Posted October 10, 2017 Share Posted October 10, 2017 Hey everyone. I purchased this fossil recently and wanted to get your opinions on it. It is from the Hell Creek formation of Montana. The seller says that is either a surangular or angular bone from a theropod jaw. After looking at pictures it does look very similar to the angular bone of a Nanotyrannus, looks about the right size too. What do you dinosaur experts think? Thanks! -Mike 1 Link to comment Share on other sites More sharing options...
Troodon Posted October 10, 2017 Share Posted October 10, 2017 I've never paid much attention to skull elements other than the jaws so cannot help you. If you compare your specimen to the three known Nano skulls: Jane, Cleveland and the Duelers it's hard to see a comparison on either the angular or surangular. I've attached pictures of each skull. My suggestion is to email Pete Larsen ( peterl@bhigr.com) see what he says, hopefully he responds. He's the most knowledgeable on Nano's and Rex's. Not a lot of comparative material around. 6 Link to comment Share on other sites More sharing options...
njcreekhunter Posted October 11, 2017 Author Share Posted October 11, 2017 @Troodon Thanks for the pics and for Pete Larson's email. I emailed him and he said it may be a prearticular but that he would have to compare it with a complete specimen. Link to comment Share on other sites More sharing options...
Troodon Posted October 11, 2017 Share Posted October 11, 2017 Super, happy you received a quick response. He's the expert with comparative material. Link to comment Share on other sites More sharing options...
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