Fossil Maniac Posted June 30, 2022 Share Posted June 30, 2022 Hello! I saw this 1.06 inch Tyrannosaur tooth from the hell creek formation in montana labled as a juvenile T.rex tooth. (he has other teeth labled as nano teeth so it wasn't his personal preference) I'm not good at telling them apart so that's why i brought it here! So is it a juvie T.rex or a nanotyrannus? Thank you! 1 Link to comment Share on other sites More sharing options...
hadrosauridae Posted June 30, 2022 Share Posted June 30, 2022 My vote is "neither". The profile looks too tall and curved for rex, base is almost square which is completely different than the "squished oval" of the nano. "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
Troodon Posted June 30, 2022 Share Posted June 30, 2022 Do you have a locality where its from? Interesting tooth. Has to be a Tyrannosaurid not much else is that size. Link to comment Share on other sites More sharing options...
jikohr Posted June 30, 2022 Share Posted June 30, 2022 40 minutes ago, Fossil Maniac said: Hello! I saw this 1.06 inch Tyrannosaur tooth from the hell creek formation in montana labled as a juvenile T.rex tooth. (he has other teeth labled as nano teeth so it wasn't his personal preference) I'm not good at telling them apart so that's why i brought it here! So is it a juvie T.rex or a nanotyrannus? Thank you! Hi, I'm the seller listing the tooth. Also yeah, I spent a lot of time looking at that one before making my decision for listing. The base was actually more tear shape however the shape looks different because a piece near the base is missing in the bottom right corner of the last photo. Also it's from Powder River County if that helps Troodon. Very interested to hear your opinion. 1 Link to comment Share on other sites More sharing options...
Fossil Maniac Posted June 30, 2022 Author Share Posted June 30, 2022 7 minutes ago, jikohr said: Hi, I'm the seller listing the tooth. Also yeah, I spent a lot of time looking at that one before making my decision for listing. The base was actually more tear shape however the shape looks different because a piece near the base is missing in the bottom right corner of the last photo. Also it's from Powder River County if that helps Troodon. Very interested to hear your opinion. Wow! thank you! Link to comment Share on other sites More sharing options...
Troodon Posted June 30, 2022 Share Posted June 30, 2022 Only way to ID teeth is to have a complete provenance, thanks Certainly not a slam dunk. The base points to a Tyrannosaurid not much else in the HC. Here is a Trex jaw with an anterior tooth thats pretty slim. So its possible its one, just a bit smaller, from a younger animal. Very nice tooth just a teaser to make a definitive call. 1 1 Link to comment Share on other sites More sharing options...
Fossil Maniac Posted June 30, 2022 Author Share Posted June 30, 2022 37 minutes ago, hadrosauridae said: My vote is "neither". The profile looks too tall and curved for rex, base is almost square which is completely different than the "squished oval" of the nano. Then what is it? A completley new genus of tyrannosaurid? Link to comment Share on other sites More sharing options...
jikohr Posted June 30, 2022 Share Posted June 30, 2022 Just now, Troodon said: Certainly not a slam dunk. The base points to a Tyrannosaurid not much else in the HC. Here is a Trex jaw with an anterior tooth thats pretty slim. So its possible its one, just a bit smaller, from a younger animal. Very nice tooth just a teaser to make a definitive call. 1 minute ago, Fossil Maniac said: Then what is it? A completley new genus of tyrannosaurid? If I understand correctly, it means there isn't enough data to say for certain if it's Nano or Juvie Rex. I'll differ to Troodon's expertise and change it accordingly. 1 Link to comment Share on other sites More sharing options...
FB003 Posted June 30, 2022 Share Posted June 30, 2022 3 minutes ago, Fossil Maniac said: Then what is it? A completley new genus of tyrannosaurid? No. Just an odd shaped root due to the picture and how it broke away. *Frank* Link to comment Share on other sites More sharing options...
Troodon Posted June 30, 2022 Share Posted June 30, 2022 I would try to get one more opinion that from P Larsen Link to comment Share on other sites More sharing options...
Fossil Maniac Posted June 30, 2022 Author Share Posted June 30, 2022 50 minutes ago, Troodon said: I would try to get one more opinion that from P Larsen how would someone even get into contact with pete larson? Link to comment Share on other sites More sharing options...
Troodon Posted June 30, 2022 Share Posted June 30, 2022 Pm sent Link to comment Share on other sites More sharing options...
Fossil Maniac Posted June 30, 2022 Author Share Posted June 30, 2022 (edited) 2 hours ago, Troodon said: Pm sent How? EDIT: nevermind Edited June 30, 2022 by Fossil Maniac Link to comment Share on other sites More sharing options...
Fossil Maniac Posted June 30, 2022 Author Share Posted June 30, 2022 I sent the email to Mr. Larson Link to comment Share on other sites More sharing options...
Phos_01 Posted June 30, 2022 Share Posted June 30, 2022 Can you keep us updated what mr. Larson said it was? To me it definitely not looks like a Rex tooth. So slender for it Thank you Link to comment Share on other sites More sharing options...
Fossil Maniac Posted June 30, 2022 Author Share Posted June 30, 2022 1 hour ago, Phos_01 said: Can you keep us updated what mr. Larson said it was? To me it definitely not looks like a Rex tooth. So slender for it Thank you He Hasn't responded yet. Link to comment Share on other sites More sharing options...
Fossil Maniac Posted July 1, 2022 Author Share Posted July 1, 2022 On 6/30/2022 at 7:01 AM, Phos_01 said: Can you keep us updated what mr. Larson said it was? To me it definitely not looks like a Rex tooth. So slender for it Thank you Yes you where right, Mr. Larson said it's a Dakotaraptor. 2 Link to comment Share on other sites More sharing options...
Troodon Posted July 1, 2022 Share Posted July 1, 2022 Wow, cool but shocked since we have no morphology like this described as a Dromaeosaurid in the HC and know little of what DK's looks like. Like to understand the density of the serrations. @jikohrcan you do a serration count would like to see what it is. Link to comment Share on other sites More sharing options...
jikohr Posted July 1, 2022 Share Posted July 1, 2022 5 minutes ago, Fossil Maniac said: Yes you where right, Mr. Larson said it's a Dakotaraptor. Wait, Dakotaraptor?! I mean don't get me wrong, I'm THRILLED but, doesn't the mesial carinae curving off to the side rule him out? Hang on guys, I'm going to get some close ups and density of the serrations. Link to comment Share on other sites More sharing options...
Troodon Posted July 1, 2022 Share Posted July 1, 2022 We have no knowledge of what the dentition of Dakotaraptor looks like. We just have a few isolated teeth. Acheroraptor probably looks more like the skull of Saurornitholestes Link to comment Share on other sites More sharing options...
Fossil Maniac Posted July 1, 2022 Author Share Posted July 1, 2022 3 hours ago, jikohr said: Wait, Dakotaraptor?! I mean don't get me wrong, I'm THRILLED but, doesn't the mesial carinae curving off to the side rule him out? Hang on guys, I'm going to get some close ups and density of the serrations. Yup Link to comment Share on other sites More sharing options...
Fossil Maniac Posted July 1, 2022 Author Share Posted July 1, 2022 4 minutes ago, jikohr said: Wait, Dakotaraptor?! I mean don't get me wrong, I'm THRILLED but, doesn't the mesial carinae curving off to the side rule him out? Hang on guys, I'm going to get some close ups and density of the serrations. Does that make it rarer then a T.Rex tooth Link to comment Share on other sites More sharing options...
Phos_01 Posted July 1, 2022 Share Posted July 1, 2022 (edited) 17 hours ago, Fossil Maniac said: Does that make it rarer then a T.Rex tooth It might , this is also a nice size However the Tyrranosaur Rex is the most sought for Dinosaur ever. And many tooth get sold with wrong info This tooth is very nice, congrats! Grating it graded by Larson is an honor. Edited July 2, 2022 by Phos_01 Link to comment Share on other sites More sharing options...
jikohr Posted July 1, 2022 Share Posted July 1, 2022 Drum roll please Link to comment Share on other sites More sharing options...
jikohr Posted July 1, 2022 Share Posted July 1, 2022 distal carinae serration density is 2.91 per mm taken over 3 mm mesial carinae serration density is 4 per mm taken over 3 mm Final thoughts gentleman? 1 Link to comment Share on other sites More sharing options...
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