TyBoy Posted December 25, 2019 Share Posted December 25, 2019 3 hours ago, Anomotodon said: And one of my rarest teeth is actually not dinosaurian, but similar morphologically. It belongs to a large terrestrial crocodile Iberosuchus cf. macrodon from the Eocene of Robiac, France. It is compressed and you can see fairly large serrations meaning it's a ziphodont tooth, as in theropod dinosaurs. Wow that tooth is special. Are there papers that describe it? Is the size typical for that species? Link to comment Share on other sites More sharing options...
paulyb135 Posted December 25, 2019 Share Posted December 25, 2019 9 minutes ago, TyBoy said: Very beautiful tooth one of the best out there, couple questions. Where from and what is its size. Also trying to learn what makes that tooth an Allosaurus versus another theropod. Never seen one that shape and size. Thanks Thank you! It is a really special tooth. It is from Johnson County, Wyoming, Morrison Formation. Originally this tooth was thought of as a ceratosaurus, however having done a serration count and ran it past a few people it has been confirmed as an Allosaurus 1 Link to comment Share on other sites More sharing options...
paulyb135 Posted December 25, 2019 Share Posted December 25, 2019 Oh and size wise it is just shy of 7cm Link to comment Share on other sites More sharing options...
Allosaurus Posted December 26, 2019 Share Posted December 26, 2019 14 hours ago, paulyb135 said: Oh and size wise it is just shy of 7cm That is one big allosaurus tooth! Do you know where it would have been positioned in the jaw? Link to comment Share on other sites More sharing options...
paulyb135 Posted December 26, 2019 Share Posted December 26, 2019 2 hours ago, Allosaurus said: That is one big allosaurus tooth! Do you know where it would have been positioned in the jaw? That’s a good question but I’m not sure I’m afraid. Maybe @troodon might know Link to comment Share on other sites More sharing options...
Troodon Posted December 26, 2019 Share Posted December 26, 2019 On 12/25/2019 at 4:56 AM, Anomotodon said: And one of my rarest teeth is actually not dinosaurian, but similar morphologically. It belongs to a large terrestrial crocodile Iberosuchus cf. macrodon from the Eocene of Robiac, France. It is compressed and you can see fairly large serrations meaning it's a ziphodont tooth, as in theropod dinosaurs. Wow super tooth and I can see why its special and a ziphodont. Never would have said Croc. Thanks for posting. Link to comment Share on other sites More sharing options...
Troodon Posted December 26, 2019 Share Posted December 26, 2019 7 hours ago, Allosaurus said: That is one big allosaurus tooth! Do you know where it would have been positioned in the jaw? 4 hours ago, paulyb135 said: That’s a good question but I’m not sure I’m afraid. Maybe @troodon might know Absolutely spectacular tooth what else can I say other that never seen a Allo tooth that large.. are you sure its one? Dentary teeth are typically smaller on Allos's so it would have to be a maxillary tooth and if so probably #5 based on the attached chart, it the biggest. Again back to my initial question is it one? I've seen a few studies on Theropod teeth and the Allo teeth in those study rarely exceeded 55 mm but I'm not an expert so it could be one. I saw your comment to TyBoy on serration density but that's only one feature that helps describe teeth hopefully you looked other characteristics. 4 Link to comment Share on other sites More sharing options...
paulyb135 Posted December 26, 2019 Share Posted December 26, 2019 1 hour ago, Troodon said: Absolutely spectacular tooth what else can I say other that never seen a Allo tooth that large.. are you sure its one? Dentary teeth are typically smaller on Allos's so it would have to be a maxillary tooth and if so probably #5 based on the attached chart, it the biggest. Again back to my initial question is it one? I've seen a few studies on Theropod teeth and the Allo teeth in those study rarely exceeded 55 mm but I'm not an expert so it could be one. I saw your comment to TyBoy on serration density but that's only one feature that helps describe teeth hopefully you looked other characteristics. Thank you. I have just re taken measurements and straight line it is 62mm and on the curve it is 70mm. It is also a lot more slender than other allosaurus teeth I have seen. I ran it past Ken Carpenter and he said it was likely the last premax tooth of an Allosaurus tooth which fits your comments. Im happy to do some further measurements and analysis You mention it being a big tooth, however I thought you had a 3 inch plus tooth on the matrix? Correct me if I’m wrong 1 Link to comment Share on other sites More sharing options...
paulyb135 Posted December 26, 2019 Share Posted December 26, 2019 17 minutes ago, paulyb135 said: Thank you. I have just re taken measurements and straight line it is 62mm and on the curve it is 70mm. It is also a lot more slender than other allosaurus teeth I have seen. I ran it past Ken Carpenter and he said it was likely the last premax tooth of an Allosaurus tooth which fits your comments. Im happy to do some further measurements and analysis You mention it being a big tooth, however I thought you had a 3 inch plus tooth on the matrix? Correct me if I’m wrong On second reading he originally thought this tooth was ceratosaurus. Looks like I need to do more measurements. 1 Link to comment Share on other sites More sharing options...
Troodon Posted December 26, 2019 Share Posted December 26, 2019 7 minutes ago, paulyb135 said: On second reading he originally thought this tooth was ceratosaurus. Looks like I need to do more measurements. Much better, I tend to agree with that and can be verified with measurements. Same info needed shown in my PM for the other tooth. Link to comment Share on other sites More sharing options...
paulyb135 Posted December 26, 2019 Share Posted December 26, 2019 2 minutes ago, Troodon said: Much better, I tend to agree with that and can be verified with measurements. Same info needed shown in my PM for the other tooth. Thanks! Leave it with me I’ll send you a PM over the next day or two with more close ups and measurements likewise with my latest Morrison theropod tooth. Please let me know your thoughts on my latest PM Link to comment Share on other sites More sharing options...
Troodon Posted December 26, 2019 Share Posted December 26, 2019 1 hour ago, paulyb135 said: You mention it being a big tooth, however I thought you had a 3 inch plus tooth on the matrix? Correct me if I’m wrong Yes but it includes a root which has been worked on and hard to see in the photo. The crown height is 55 mm still a whopper. Link to comment Share on other sites More sharing options...
paulyb135 Posted December 27, 2019 Share Posted December 27, 2019 Thanks to @Troodon and Ken Carpenter, this tooth has been confirmed as an Allosaurus which means that a Ceratosaurus tooth still needs to be obtained. 3 Link to comment Share on other sites More sharing options...
juan Posted February 24, 2020 Share Posted February 24, 2020 My best dinosaur tooth is this Triceratops tooth. 3 Link to comment Share on other sites More sharing options...
Per Christian Posted November 14, 2022 Share Posted November 14, 2022 This is a rooted eocarcharia tooth, my rarest i think. Never seen one before. It doesn't compete with most teeth here tho Link to comment Share on other sites More sharing options...
Fonneren Posted December 4, 2022 Share Posted December 4, 2022 My 3.35" Serrated Carcharodontosaurus - My first and only (At least the next 2 weeks) fossil, a dream piece come true. Link to comment Share on other sites More sharing options...
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