Compy Posted October 25, 2021 Share Posted October 25, 2021 Hi all, with Covid making it impossible to attend any shows here last year I was able to visit the Munich Show last weekend. Among others I’ve bought this tooth. Ive learned from you guys not to trust the ID done by the seller so after reading some posts here I doubt that the tooth is a ankylosaurus magniventris. To me it looks more like a Thescelosaurus. Am I correct with this opinion? Details provided by the seller: Hell Creek Formation North West South Dakota Thanks in advance for your expertise! 1 Link to comment Share on other sites More sharing options...
Troodon Posted October 25, 2021 Share Posted October 25, 2021 I initially thought it was a Nodosaur tooth and definitively not a Thescelosaurus but the tooth appears to have a strong center ridge and shelf which would say Anky. It appears to have a damaged bulbous platform shown by an arrow in the photo below. So check your specimen the photos are a bit darker than I would like. A nodosaur crown would be missing the ridge and have a pocket in its place see photo Thescelosaurus denticles would not be as strong with no lateral platform. Nodosaurid 1 Link to comment Share on other sites More sharing options...
Runner64 Posted October 25, 2021 Share Posted October 25, 2021 I agree with Ankylosaurus @Troodon 1 Link to comment Share on other sites More sharing options...
Compy Posted October 26, 2021 Author Share Posted October 26, 2021 Thank you @Troodon and @Runner64 I tried to take some better pictures because i wasnt quite sure about the center ridge and the bulbous platform, which let me lean towards nodosaurid. But I think given the not that perfect state of preservation I think I can see the center ridge and some faint bulb too... P.S. Please excuse me not being able to produce such nice macro pictures for I don't have a decent camera... Link to comment Share on other sites More sharing options...
Troodon Posted October 26, 2021 Share Posted October 26, 2021 Much better photo, I see why you are saying that but I still think Its Anky. There is center ridge not very pronounced and the damage to the bulbous area does not help. A Nodosaur face is typically more of a pocket and I don't see that. Just an FYI, I've also attached an illustration of the different morphs of Thescelosaurus and you can see how fine the denticles are on the ridge. BTY for future posts try to post closeup images and ones facing in the direction shown in my images. Hard to diagnose teeth that are upside down. Link to comment Share on other sites More sharing options...
Runner64 Posted October 26, 2021 Share Posted October 26, 2021 I still think ankylosaurid tooth. Nice one! Link to comment Share on other sites More sharing options...
Compy Posted October 26, 2021 Author Share Posted October 26, 2021 @TroodonThank you very much. I see your points. Just couldn’t believe that the seller was correct and I was able to get my hands on a tooth of this species. :-) @Runner64Thank you got your help too! Sorry for the bad pictures, next time I will remember to upload them properly facing upwards. I really appreciate your knowledge and help! Link to comment Share on other sites More sharing options...
Troodon Posted October 26, 2021 Share Posted October 26, 2021 33 minutes ago, Compy said: .Just couldn’t believe that the seller was correct Hey even a blind squirrel finds a nut 1 Link to comment Share on other sites More sharing options...
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