StevenJD Posted March 7, 2020 Share Posted March 7, 2020 Here are a couple of dinosaur teeth (tyrannosauroid and hadrosaurid) from Bladen County, North Carolina. 13 Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 16 Link to comment Share on other sites More sharing options...
Praefectus Posted March 7, 2020 Share Posted March 7, 2020 Nice finds! Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted March 7, 2020 Share Posted March 7, 2020 Both beautiful but I think I like the hadrosaurid most. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Jaimin013 Posted March 7, 2020 Share Posted March 7, 2020 Steven these are awesome. I also have two tyrannosaurid teeth from the Black Creek Group. Really like the hadrosaurid though. Link to comment Share on other sites More sharing options...
Troodon Posted March 7, 2020 Share Posted March 7, 2020 Super cool, congrat, great addition to your collection. Any dino material from the east coast is special. Link to comment Share on other sites More sharing options...
paulyb135 Posted March 7, 2020 Share Posted March 7, 2020 Super teeth! Link to comment Share on other sites More sharing options...
Runner64 Posted March 7, 2020 Share Posted March 7, 2020 Very nice and in good condition. Did you happen to find these yourself? I couldn’t even begin to imagine screening one of those out! Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 14 hours ago, Praefectus said: Nice finds! 14 hours ago, Tidgy's Dad said: Both beautiful but I think I like the hadrosaurid most. Thanks guys Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 7 hours ago, Jaimin013 said: Steven these are awesome. I also have a two tyrannosaurid teeth from the Black Creek Group. Really like the hadrosaurid though. Thanks Jaimin. Please feel free to post photos of yours on this thread Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 7 hours ago, Troodon said: Super cool, congrat, great addition to your collection. Any dino material from the east coast is special. Thank you, happy to add them to the collection. Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 36 minutes ago, Runner64 said: Very nice and in good condition. Did you happen to find these yourself? I couldn’t even begin to imagine screening one of those out! Thank you. I wish I found them, but a friend did. 1 Link to comment Share on other sites More sharing options...
dinosaur man Posted March 7, 2020 Share Posted March 7, 2020 Amazing teeth!! Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 5 hours ago, paulyb135 said: Super teeth! Thanks Paul! Link to comment Share on other sites More sharing options...
StevenJD Posted March 7, 2020 Author Share Posted March 7, 2020 30 minutes ago, dinosaur man said: Amazing teeth!! Thanks 1 Link to comment Share on other sites More sharing options...
Jaimin013 Posted March 8, 2020 Share Posted March 8, 2020 @StevenJD As we discussed - this is probably the best images that I can do with what I have right now until I can get a proper microscope. Was extremely difficult to capture as I was trying to keep the tooth in place, hold the ruler, the lens and smartphone in place at the same time! Captured on a smartphone through the lens of one of those magnifying glasses you wear as regular glasses. Between the two longer lines is a 5mm length. First pic 12.5 serrations across 5mm 2nd - 13.5 in 5mm however i'd probably go by the count in the first pic if you look at the angle I took the second pic. Seems almost due to the curve in the tooth that the top part of the tooth was sitting on top of the ruler rather than flush against the surface of the ruler like the first pic. Both pics are of the same tooth my other tooth doesn't have serrations anymore they are too worn. 1 Link to comment Share on other sites More sharing options...
StevenJD Posted March 8, 2020 Author Share Posted March 8, 2020 @Jaimin013 I have trouble taking clear close-ups of serrations too. My tooth is 13/5mm, so similar to your tooth. I could be wrong, but I think Dryptosaurus has a lower count than what our counts are. I'm away from home at the moment, but when I get back, I'll see if I can take some close-ups. 2 Link to comment Share on other sites More sharing options...
rand95 Posted March 8, 2020 Share Posted March 8, 2020 Awesome teeth, Congrats. Link to comment Share on other sites More sharing options...
StevenJD Posted March 8, 2020 Author Share Posted March 8, 2020 1 minute ago, rand95 said: Awesome teeth, Congrats. Thank you 1 Link to comment Share on other sites More sharing options...
Jaimin013 Posted March 8, 2020 Share Posted March 8, 2020 1 hour ago, StevenJD said: @Jaimin013 I have trouble taking clear close-ups of serrations too. My tooth is 13/5mm, so similar to your tooth. I could be wrong, but I think Dryptosaurus has a lower count than what our counts are. I'm away from home at the moment, but when I get back, I'll see if I can take some close-ups. Ok thanks! I don't think I did a too bad job although took a while. I think Troodon previously mentioned on a previous post that the range like my tooth is finer than the holotype which was 8 on the distal edge and 9.5 on the mesial one. Unfortunately the sampling size is not very large to draw any conclusions but they are different. That tooth was 47mm tall compared to mine which is smaller. Frank study with Trex teeth in his collection showed serration decrease in density as they get larger. Link to comment Share on other sites More sharing options...
Troodon Posted March 8, 2020 Share Posted March 8, 2020 A couple of fyi tidbits : 1) 2018 paper : The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia - By Chase D. Brownstein makes the following statement "In addition to Dryptosaurus aquilunguis, material assigned to the tyrannosauroid dinosaur Appalachiosaurus montgomeriensis was reported from Stokes Quarry by Schwimmer et al. (2015). Therefore, two large tyrannosauroid dinosaurs were present in the Tar Heel-Coachman non-avian dinosaur fauna." 2) Both of these theropod are not Tyrannosaurids but Tyrannosauroids 3)Tooth Characteristics what was reported: Dryptosaurus: holotype Distal density midline 8.5/5mm Mestal density midline 9/5mm Interdenticular sulci present distal carina Appalachiosaurus: holotype Distal density midline 11/5 mm Distal density base 16/5 mm Mesial not reported but thought to be close to distal. Mesial carina has lingual twists 6 Link to comment Share on other sites More sharing options...
Jaimin013 Posted March 8, 2020 Share Posted March 8, 2020 1 hour ago, Troodon said: A couple of fyi tidbits : 1) 2018 paper : The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia - By Chase D. Brownstein makes the following statement "In addition to Dryptosaurus aquilunguis, material assigned to the tyrannosauroid dinosaur Appalachiosaurus montgomeriensis was reported from Stokes Quarry by Schwimmer et al. (2015). Therefore, two large tyrannosauroid dinosaurs were present in the Tar Heel-Coachman non-avian dinosaur fauna." 2) Both of these theropod are not Tyrannosaurids but Tyrannosauroids 3)Tooth Characteristics what was reported: Dryptosaurus: holotype Distal density midline 8.5/5mm Mestal density midline 9/5mm Interdenticular sulci present distal carina Appalachiosaurus: holotype Distal density midline 11/5 mm Distal density base 16/5 mm Mesial not reported but thought to be close to distal. Mesial carina has lingual twists Thanks alot very informative. I'm leaning towards Appalachiosaurus Link to comment Share on other sites More sharing options...
StevenJD Posted March 8, 2020 Author Share Posted March 8, 2020 @Troodon Thanks very much for the posted information; this is very helpful. Link to comment Share on other sites More sharing options...
fossilsonwheels Posted March 8, 2020 Share Posted March 8, 2020 Wow those are great teeth from a great location. Congrats Link to comment Share on other sites More sharing options...
StevenJD Posted March 8, 2020 Author Share Posted March 8, 2020 2 hours ago, fossilsonwheels said: Wow those are great teeth from a great location. Congrats Thanks Link to comment Share on other sites More sharing options...
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