Dino9876 Posted November 11, 2018 Share Posted November 11, 2018 Hey guys, I´m from Germany and have bought this little tooth from the Hell Creek Formation in Montana. The seller described the tooth as "Dromaeosaur tooth", which belongs possible to Dakotaraptor or Acherorator. I´m not sure about the identification of this tooth and hope, that you can help me. The tooth is 1,27cm (= 1/2") in lenght. Thank you in advance and kind regards! 1 My collection of Uncommon extant shark teeth - Here My collection of interesting rare shark jaws - Here Link to comment Share on other sites More sharing options...
mburkett Posted November 11, 2018 Share Posted November 11, 2018 It’s Dromaeosaurid, but there’s not enough diagnostic features to identify the tooth to the genus level. Best labeled “dromaeosauridae species indet” Link to comment Share on other sites More sharing options...
TyBoy Posted November 11, 2018 Share Posted November 11, 2018 Looks like a Nanotyrannus not a Dromaeosaurid. 1 Link to comment Share on other sites More sharing options...
Runner64 Posted November 11, 2018 Share Posted November 11, 2018 3 hours ago, TyBoy said: Looks like a Nanotyrannus not a Dromaeosaurid. I’m not seeing Nanotyrannus. Not enough curvature and serrations look too big. 1 Link to comment Share on other sites More sharing options...
TyBoy Posted November 11, 2018 Share Posted November 11, 2018 Not much else it could be 1 Link to comment Share on other sites More sharing options...
mburkett Posted November 11, 2018 Share Posted November 11, 2018 8 hours ago, TyBoy said: Looks like a Nanotyrannus not a Dromaeosaurid. I can see why you see this. Ultimately, I believed the posterior serrations were larger than the anterior though. And they’re not the typical “boxed” tyrannosaurid shape. I wouldn’t be surprised if I was wrong on this one, however Link to comment Share on other sites More sharing options...
JoeS Posted November 12, 2018 Share Posted November 12, 2018 5 hours ago, mburkett said: I can see why you see this. Ultimately, I believed the posterior serrations were larger than the anterior though. And they’re not the typical “boxed” tyrannosaurid shape. I wouldn’t be surprised if I was wrong on this one, however hi, this is a difficult one I agree that the denticle shape on the distal carina does not quite match Nanotyrannus. There is a size difference in denticles mesial/distal, though not as pronounced as expected for a Dromaeosaur. Is there a ridge running down the tooth in image2, or is it a focus thing/my imagination? And yes, the tooth is not really recurved, but you can find images of Dromaeosaur teeth like that. I lean towards Dromaeosaur (Acheroraptor) for now ... but there is only so much to go on with this tooth =) 1 Link to comment Share on other sites More sharing options...
Runner64 Posted November 12, 2018 Share Posted November 12, 2018 16 hours ago, JoeS said: hi, this is a difficult one I agree that the denticle shape on the distal carina does not quite match Nanotyrannus. There is a size difference in denticles mesial/distal, though not as pronounced as expected for a Dromaeosaur. Is there a ridge running down the tooth in image2, or is it a focus thing/my imagination? And yes, the tooth is not really recurved, but you can find images of Dromaeosaur teeth like that. I lean towards Dromaeosaur (Acheroraptor) for now ... but there is only so much to go on with this tooth =) With such a small segment of a fractured tooth, it can be hard, if not, impossible to ID. Tooth looks too thin and not enough curvature to make it Nano which I agree on you with. Link to comment Share on other sites More sharing options...
TyBoy Posted November 14, 2018 Share Posted November 14, 2018 The carina on a Nano is typically twisted and straight on a Acheroraptor. The serrations on both edges look pretty similar not typical of a Dromaeosaurid. Tooth is not compressed enough for It to be dromaeosaurid. Vertical ridges typical of Acheroraptor not present. Link to comment Share on other sites More sharing options...
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