Haravex Posted April 13, 2019 Share Posted April 13, 2019 So the tooth along with a few others I bought from a popular auction website the tooth in question measured 1.51 inches and defo a pre max tooth. Link to comment Share on other sites More sharing options...
Haravex Posted April 13, 2019 Author Share Posted April 13, 2019 was wondering if @Troodon or @hxmendoza could help and if so thanks in advance Link to comment Share on other sites More sharing options...
Troodon Posted April 13, 2019 Share Posted April 13, 2019 Do you have a location ? Can you take a sharper photo ofcthe first one Link to comment Share on other sites More sharing options...
Haravex Posted April 13, 2019 Author Share Posted April 13, 2019 He'll creek formation Link to comment Share on other sites More sharing options...
Bobby Rico Posted April 13, 2019 Share Posted April 13, 2019 Strange looking tooth. Link to comment Share on other sites More sharing options...
Troodon Posted April 13, 2019 Share Posted April 13, 2019 Hell Creek Fm is not a location , State and County needed to verify what you have been told. Too large to be Nanotyrannus 2 Link to comment Share on other sites More sharing options...
Haravex Posted April 14, 2019 Author Share Posted April 14, 2019 I only know that it was stated Montana nothing more than this. Link to comment Share on other sites More sharing options...
Troodon Posted April 14, 2019 Share Posted April 14, 2019 For future reference Montana has lots of different exposures with Tyrannosaurid teeth and Ive see seller identify Judith River Fm teeth has Trex. Always good to verify. Link to comment Share on other sites More sharing options...
Haravex Posted April 14, 2019 Author Share Posted April 14, 2019 Right ok I did ask from what I was understanding he had these for a while there where also two other teeth that are from same location Link to comment Share on other sites More sharing options...
Haravex Posted April 15, 2019 Author Share Posted April 15, 2019 So in regards to the first tooth what would you be thinking? @Troodon or @LordTrilobite but I feel you top as being the expert on north american dinosaur material. Link to comment Share on other sites More sharing options...
Troodon Posted April 15, 2019 Share Posted April 15, 2019 Size? and serration count on distal side (5 mm in center). If they are very fine its a cf Richardoestesia gilmorei 1 Link to comment Share on other sites More sharing options...
LordTrilobite Posted April 15, 2019 Share Posted April 15, 2019 Dunno, I normally stay away from most dinosaur teeth ID outside of Kem Kem. Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
Haravex Posted April 27, 2019 Author Share Posted April 27, 2019 tyrannosauirdae tooth - Crown Height - CH 37mm Crown Base Length - CBL 19mm Crown Base Width - CBW 11mm AL - 37mm Distal Serration Count - midline 2-5 mm wide depending on size of tooth 5mm- 18 2mm 8 Mesial Serration Count - midcarina 1-3 mm wide depending on size of tooth therpod indet 1 Crown Height - CH 13mm Crown Base Length - CBL 4mm Crown Base Width - CBW 1mm Distal Serration Count - midline 2-5 mm wide depending on size of tooth 2mm 11 Mesial Serration Count - midcarina 1-3 mm wide depending on size of tooth 2mm 18 1 Link to comment Share on other sites More sharing options...
Troodon Posted April 27, 2019 Share Posted April 27, 2019 Tyrannosaurid pre-max teeth cannot be distinguished between one another so locality is very important. If you believe this is from a locality (State and County) that the Hell Creek Fm is found than its a T-rex tooth since Nanotyrannus pre-max teethdo not come tgat large. Your second tooth is .. cf Richardoestesia gilmorei 1 Link to comment Share on other sites More sharing options...
Haravex Posted April 28, 2019 Author Share Posted April 28, 2019 2 hours ago, Troodon said: Tyrannosaurid pre-max teeth cannot be distinguished between one another so locality is very important. If you believe this is from a locality (State and County) that the Hell Creek Fm is found than its a T-rex tooth since Nanotyrannus pre-max teethdo not come tgat large. Your second tooth is .. cf Richardoestesia gilmorei Thanks Troodon, quick question what does the CF stand for? Link to comment Share on other sites More sharing options...
Troodon Posted April 28, 2019 Share Posted April 28, 2019 R.gilmorei is not described in the Hell Creek Fm but the teeth compare (cf) to those where its described. The abbreviation cf is latin for confer/conferatur, both meaning "compare") 1 Link to comment Share on other sites More sharing options...
Haravex Posted April 28, 2019 Author Share Posted April 28, 2019 This is the final tooth I don't have much hope for it because the serations are mostly worn down Crown Height - CH 8mm Crown Base Length - CBL 3mm Crown Base Width - CBW 1mm Link to comment Share on other sites More sharing options...
Haravex Posted April 28, 2019 Author Share Posted April 28, 2019 And this is a close up of the few serrations left with a microscope Link to comment Share on other sites More sharing options...
Haravex Posted April 29, 2019 Author Share Posted April 29, 2019 I believe this tooth might be Paronychodon, but am unsure is this just a tooth taxon? Link to comment Share on other sites More sharing options...
hxmendoza Posted May 8, 2019 Share Posted May 8, 2019 @Troodon‘s assessments on both teeth are correct. That smaller striated tooth is a type of Paronychodon species. The issue seems to be that the type teeth of Paronychodon do not have serrations and this one does. Though Paronychodon lacustris is out of the Judith River Formation. Olshevsky referred the Hell Creek Paronychodon teeth to Paronychodon caperatus in 1991. But I’m not sure this is an accepted species. I haven’t read the paper so I cannot comment on if the tooth he referred had serrations or not. Perhaps @Troodon can add to this if he has more info. Zapsalis sp. has striations and serrations. But the morphology of that tooth taxon does not match this tooth. 1 Link to comment Share on other sites More sharing options...
Troodon Posted May 8, 2019 Share Posted May 8, 2019 Interesting tooth did not see the post thanks @hxmendoza.. I dont think the serrations are worn just not there.. Very unusual tooth the vertical ridges are typical of the two mentioned above Paronychodon and Zapsalis but the overall morphologies dont fit either however its more "Paronychodon like" than the other. There are lots of variation in morphologies with Paronychodon all poorly understood so you may want to send an email to P Currie whos is the best to analyze it he might respond and give you his thoughts.. Link to comment Share on other sites More sharing options...
doushantuo Posted May 8, 2019 Share Posted May 8, 2019 apologies if repost Julia Sankey,Donald Brinkman,Merrilee Guenther,Phillip J Currie Small theropod and bird teeth from the late Cretaceous Judith River Group,Alberta Journal of Paleontology,76,v.4/2002 might be of some use edit/10-5-2019:reason :this paper deserves some recognition,perhaps the added images give an idea of the flavour,besides plots like fig.6 and 7 are pretty useful(size comparisons!) Paronychodon,Richardoestesia,Saurornitholestes caveat:bear in mind that the paper is from 2002* (think,e.g.'"S." robustus revision) Link to comment Share on other sites More sharing options...
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