Stegonick23 Posted November 2, 2018 Share Posted November 2, 2018 Hello TFF! This is my first post (finally just made an account after some technical difficulties, thanks @Fossildude19 for your help!) although I've been reading up for the past few months on this site. I am looking to purchase this Nanotyrannus tooth from an auction site, and I have included all of the pictures provided on the listing. I understand that this is a very rough tooth (the seller clearly states this as well and doesnt try to mislead in the slightest) and I just want to make sure that it is actually a Nanotyrannus tooth. The seller states it is from the Hell Creek Formation, 1.25" long, feeding worn tip, and wear grooves from the opposing teeth. The seller also states that there has been no restoration/repair done, other than some fossil glue used to stabilize the tip, and a COA can be included following purchase. I'm just looking for confirmation that it is a nanotyrannus tooth, or even a tyrannosaurid tooth. I tried to include all of the info I.D. posts usually need, but if I missed anything please let me know. Thank you all for your help! I really appreciate it! 1 Link to comment Share on other sites More sharing options...
indominus rex Posted November 2, 2018 Share Posted November 2, 2018 I have also seen this tooth, to me the compression does remind me more of a Nanotyrannus rather than a Rex. It is in quite rough condition but I can still see a few serrations left on the tooth. But I think that @Troodon can give you the most accurate and best response possible. Regards, indominus rex 2 Life started in the ocean. And so did my interest in fossils. Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 2, 2018 Share Posted November 2, 2018 @-Andy- @LordTrilobite @hxmendoza 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
bcfossilcollector Posted November 2, 2018 Share Posted November 2, 2018 Hi Stegonick23. I’m fairly certain that what you have here is a very worn Nanotyrannus tooth. The base of tooth is characteristic, rectangular and compressed, of what is generally regarded as Nano tooth vs say a T. rex tooth. Pity the serrations are so worn. It is important to consider that describing Nanotyrannus specimens as such remains a dubious assertion as science has yet to establish whether or not it stands as an individual species or as a juvenile example of T. rex 2 Link to comment Share on other sites More sharing options...
Stegonick23 Posted November 2, 2018 Author Share Posted November 2, 2018 Awesome, thank you everyone for your help! One quick question; does anyone know the reason for the variations in color between teeth of the same species? Specifically with tyrannosaurid teeth, I've seen a couple that are a dark brown color, a couple that are light brown/tan, and then some like the pictures above that are very dark, almost black colored. If someone has a link to a TFF thread, or other text, that details this I would love to read up on it. Thanks again! Link to comment Share on other sites More sharing options...
Bobby Rico Posted November 2, 2018 Share Posted November 2, 2018 1 hour ago, Stegonick23 said: Awesome, thank you everyone for your help! One quick question; does anyone know the reason for the variations in color between teeth of the same species? Specifically with tyrannosaurid teeth, I've seen a couple that are a dark brown color, a couple that are light brown/tan, and then some like the pictures above that are very dark, almost black colored. If someone has a link to a TFF thread, or other text, that details this I would love to read up on it. Thanks again! I think it is probably the difference in colour is from what ever minerals the ground water is depositing into the fossilisation process . 2 Link to comment Share on other sites More sharing options...
Runner64 Posted November 2, 2018 Share Posted November 2, 2018 Hi definitely a Nanotyrannus but in very rough condition. Can find nicer ones out there. 1 Link to comment Share on other sites More sharing options...
The Amateur Paleontologist Posted November 2, 2018 Share Posted November 2, 2018 Very nice tooth (definitely tyrannosaurine IMO).. I'd call on @Troodon for the 'last say', but he's been fairly quiet these past few weeks -Christian 2 Opalised fossils are the best: a wonderful mix between paleontology and mineralogy! Q. Where do dinosaurs study? A. At Khaan Academy!... My ResearchGate profile Link to comment Share on other sites More sharing options...
doushantuo Posted November 2, 2018 Share Posted November 2, 2018 (edited) I'm looking at Bakker's monograph right now, and it could be Nanotyrannus, but I have said this before: theropod teeth assignments need: large sample sizes, advanced statistical treatment of the data, the ruling out of collector bias, a good taphonomical analysis, et very much cetera. Edited November 2, 2018 by Kane Syntax and spelling error revisions 2 Link to comment Share on other sites More sharing options...
doushantuo Posted November 2, 2018 Share Posted November 2, 2018 nanotyrbrusa1-s2.0-S0195667116300192-main.pdf part of the discussion........../ Dentary groove morphology does not distinguish ‘Nanotyrannus’ as a valid taxon of tyrannosauroid dinosaur. Comment on: “Distribution of the dentary groove of theropod dinosaurs: Implications for theropod phylogeny and the validity of the genus Nanotyrannus Bakker et al., 1988” Stephen L. Brusatte a, *, Thomas D. Carr b, Thomas E. Williamson c, Thomas R. Holtz Jr. d, Cretaceous Research 1 Link to comment Share on other sites More sharing options...
doushantuo Posted November 2, 2018 Share Posted November 2, 2018 Distribution of the dentary groove of theropod dinosaurs: Implications for theropod phylogeny and the validity of the genus Nanotyrannus Bakker et al., 1988 Joshua D. Schmerge a, *, Bruce M. Rothschild b Cretaceous Reseach,april 2016 schmergetyrannosaumorpholanatocretresMandibular groove.phylogeny.pdf 1 Link to comment Share on other sites More sharing options...
-Andy- Posted November 2, 2018 Share Posted November 2, 2018 It's a Nanotyrannus based off the cross section 4 Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
FossilsAnonymous Posted November 2, 2018 Share Posted November 2, 2018 @Stegonick23 It definitely seems tyrannosaurid, but don't quote me. I actually haven't seen @Troodon on for a while either. 1 On The Hunt For The Trophy Otodus! Link to comment Share on other sites More sharing options...
LordTrilobite Posted November 2, 2018 Share Posted November 2, 2018 I agree with the rest, likely Nanotyrannus. Though it's not entirely clear if it's a valid species. 2 Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
-Andy- Posted November 5, 2018 Share Posted November 5, 2018 On 03/11/2018 at 6:19 AM, LordTrilobite said: I agree with the rest, likely Nanotyrannus. Though it's not entirely clear if it's a valid species. I feel that whether or not Nanotyrannus is the same "Nanotyrannus" that some paleontologist think of Jane or Bloody Mary as, these slender teeth are undoubtedly something separate from T-Rex's blunt and robust teeth. 2 Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now