Dino Dad 81 Posted August 15, 2022 Share Posted August 15, 2022 This tooth is from Tiouraren Hill, Téneré Desert, Niger. I thought it may have aff to ceratosaurs and, looking up the formation, might it be Spinostropheus? 1 Link to comment Share on other sites More sharing options...
Kikokuryu Posted August 16, 2022 Share Posted August 16, 2022 It does look similar to what you want to look for in Ceratosaurus teeth. Spinostropheus isn't associated with any teeth, so it's impossible to say. But it is likely a ceratosaurian of some kind and not a basal spinosaurid as it's being sold as. I do also have a similar tooth from Nafanfo, Agadez, Niger with the similar fluting and no mesial serrations. Link to comment Share on other sites More sharing options...
Troodon Posted August 16, 2022 Share Posted August 16, 2022 Well Serrano-Martinez et al. paper (2014) paper on Tiouraren theropod teeth describes this morph type with apicobadal ridges as Spinosauridae. All I have to go on. 1 Link to comment Share on other sites More sharing options...
Kikokuryu Posted August 16, 2022 Share Posted August 16, 2022 15 minutes ago, Troodon said: Well Serrano-Martinez et al. paper (2014) paper on Tiouraren theropod teeth describes this morph type with apicobadal ridges as Spinosauridae. All I have to go on. I don't have access to it, but would this paper be significant in anyway? https://www.sciencedirect.com/science/article/abs/pii/S0895981120303242 At least, the abstract mentions supposed Jurassic spinosaurid teeth (including Niger). Link to comment Share on other sites More sharing options...
Troodon Posted August 16, 2022 Share Posted August 16, 2022 No idea, I don't have access to it. There is Serrano-Martinez et al. paper (2016) that describes 4 theropod teeth and one is a spinosauridae from Irhazer Group no vertical ridges apparant but the preservationis very poor. Link to comment Share on other sites More sharing options...
Dino Dad 81 Posted August 18, 2022 Author Share Posted August 18, 2022 (edited) @Kikokuryu @Troodon I just saw this tooth somewhere also from Jurassic Niger. This looks incredibly cerato dentary to me. Could we be seeing a decent case building for a ceratosaur in Niger 10-15M years before ceratosaurus? Edited August 18, 2022 by Dino Dad 81 1 Link to comment Share on other sites More sharing options...
Troodon Posted August 18, 2022 Share Posted August 18, 2022 So we ignore the paper that describes its as a Spinosauridae. The only paper that focus on Tiouraren theropod teeth? Not going there. Link to comment Share on other sites More sharing options...
Troodon Posted August 18, 2022 Share Posted August 18, 2022 When I made my comments there were no images. I agree that it looks like a Ceratosaurus sp. tooth. The paper already identifies some of the teeth examined as Ceratosaurus so there is no case to be built up they appear to be in that deposit 1 Link to comment Share on other sites More sharing options...
Troodon Posted August 18, 2022 Share Posted August 18, 2022 I've updated my Niger topic to reflect new information provided on Sato et al. (2020) paper. Thank you for your help @JoeS Identification of Theropod Teeth from Niger - Questions & Answers - The Fossil Forum Based on that publication it's fair to say that this tooth has affinities to a Ceratosaurid. Unfortunately, until teeth are described for Spinostropheus its difficult to assign it to that species. 1 Link to comment Share on other sites More sharing options...
Dino Dad 81 Posted August 19, 2022 Author Share Posted August 19, 2022 (edited) On 8/17/2022 at 10:35 PM, Dino Dad 81 said: @Troodon, would you give this one similar probability? I'll add this pic as well. Edited August 19, 2022 by Dino Dad 81 Link to comment Share on other sites More sharing options...
Troodon Posted August 19, 2022 Share Posted August 19, 2022 Most likely yes but you know me on these type of teeth. Pictures are nice but without doing a multivariate analysis it's just a guess. Need numbers. Link to comment Share on other sites More sharing options...
Dino Dad 81 Posted August 19, 2022 Author Share Posted August 19, 2022 (edited) All I know is that it's 2" on the nose (5.1cm), which probably also bodes well, since it's clearly not Afrovenator. I'll hopefully know more soon. Edited August 19, 2022 by Dino Dad 81 Link to comment Share on other sites More sharing options...
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