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  1. FF7_Yuffie

    Nano or Rex?

    Unfortunately, seller doesn't lnow beyond Hell Creek. Both are just over an inch long. 1, 2 and 3 = tooth 1 Now the base does indent slightly, but it is less rectangular and more rounded at the rear. So I would love an opinion on it. Picture 4, 5 and 6 is tooth 2. This looks partial? Though the photo of the base isn't head on (I've asked for extra pic), it looks sheared rather than complete? Pic 7= left is tooth 1, right is tooth 2. Thanks for the help.
  2. FF7_Yuffie

    Nanotyraannus, Rex or Raptor?

    Hi, Any thoughts on this? It is from Garfield, County, Montana. 1.8 cm so it's quite small. The serrations are a bit battered and have matrix stuck on them, but are present. Any thoughts would be appreciated. The white marks, am I right that this is from plant roots wrapped around the tooth? Thanks
  3. Simonsaz

    nanotyrannus tooth?

    hello, a quick question. the dinosaur tooth has a length of 1.9 inch. the tooth was found in the hell creek formation. I don't know the exact location. I would say it is a nanotyrannus tooth. what do you think? and if so, what do you think, whether above or below the jaw? I think that's a little thing for you ;) best regards and thank you very much in advance for your help
  4. Thefossilman92

    Very tiny tyrannosaurid tooth

    I have this very tiny tyrannosaurid tooth from hell creek formation, south dakota. Im wondering if it's possible to know if the tooth is from a infant nano or t-rex? Distal serration density: about 6/mm Can't see any intact serrations on the mesial side. Crown Height: 4 mm Crown base-lenght: 2,5 mm Crown base-width: under 1 millimeter, about 0,8 mm to roughly estimate (very hard to measure this one).
  5. Sergiorex

    Trex or nano

    Found in hell creek fm
  6. Sergiorex

    Identification nano, trex or raptor

    This was found in Powder River county, Montana. and I was wondering what species it is, they think it’s nano but I’m leaning towards trex as it’s more robust and has a circular bottom
  7. Sergiorex

    Nano or trex

    Just curious, because seller listed as nano
  8. I’m thinking about buying one of them, assuming their the same price which one is better? my general overview- tooth in matrix is smaller, only .75 inch. But higher quality. However It can’t be id, it can be either Nanotyrannus or trex the other tooth is significantly bigger but has more wear and is confirmed to be trex. There’s no picture of bottom but I asked for one and ofc if they send it and it’s not a trex tooth I’m not going to buy it.
  9. Sergiorex

    Nanotyrannus or Tyrannosaurus rex

    Hello, I’m thinking about buying this for my first dinosaur tooth. And I was just wondering if you guys think it’s a tyrannosaur rex or nanotyrannus tooth. It’s from hell creek formation.
  10. 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!
  11. AranHao

    Help me identify my first tooth

    Hi all Emmm, this is my first Tyrannosaurus tooth, yes, I had no experience at the time, but I still remember how excited I was when I got this tyrannosaurus tooth, even now. Yes, he was a broken tooth, and it was expensive.And now I want to know the tooth ID.I think it's nanotyrannus. All I know is it's from hell Creek, Montana, no county. Thanks
  12. AranHao

    T-rex or a nanotyrannus

    HELP! Please help me identify it.I am not sure it is t-rex or nanotyrannus .the tooth from the Hell Creek Formation of Dawson County, Montana. THANKS
  13. AranHao

    Is it a Nanotyrannus tooth?

    I have a nanotyrannus tooth( 2 1/8" inches )from the Hell Creek Formation of Montana. But now I have doubts about its authenticity ,Because I saw a fossilID topic that ultimately thought it was Dakotaraptor,I think mine is a bit similar,So is it a Dakotaraptor tooth or a Nanotyrannus tooth? Thanks!
  14. Mrhenky3

    Nanotyrannus or other?

    I've recently aquired this Tyrannosaurid tooth from a local shop. The shop sold it as Nanotyrannus lancensis. I think the tip has been repaired, but not quite sure that it is worn or repaired. However the tooth does not show the indents on the bottom, which is sometimes to be expected on Nanotyrannus I heard. I was wondering if somebody could take another look for me and share their opinion, about what species this tooth belonged to. Thanks in advance. The tooth was found in the Hell Creek Formation in Montana
  15. ThePhysicist

    Tyrannosaur dental ontogeny?

    From the album: Hell Creek / Lance Formations

    It's interesting to compare differently-sized teeth of similar positions. These might represent ontogeny or other dental variation (due to multiple species, etc.).
  16. ThePhysicist

    Tyrannosaur dental ontogeny?

    From the album: Hell Creek / Lance Formations

    It's interesting to compare differently-sized teeth of similar positions. These might represent ontogeny or other dental variation (due to multiple species, etc.).
  17. Updated Dec 30, 2021 Collectors, online sellers and some dealers periodically ask me to help them in the identification of tyrannosaur type teeth. So I thought I would put together a guide from Western North America (US/Canada) to help in identification. The following is the current understanding of those Tyrannosaurids described/known with the stratigraphic unit where they are found. If I missed any let me know. Albertosaurus sarcophagus : Horseshoe Canyon Formation cf Albertosaurus indet: Wapiti Formation Gorgosaurus libratu
  18. ThePhysicist

    Juvenile Tyrannosaur tooth

    From the album: Hell Creek / Lance Formations

    Sold by the BHI as Nanotyrannus lancensis. However, given the uncertain status of Nanotyrannus' validity, I chose to label it as Tyrannosaurid for now. It is interesting to compare to my other small Tyrannosaur teeth of the same/similar position. The base is clearly more compressed than my baby rex tooth (which is also smaller).
  19. ThePhysicist

    Juvenile Tyrannosaur tooth

    From the album: Hell Creek / Lance Formations

    A Tyrannosaur tooth from Eastern Montana. Given the basal "pinching," this would be Nanotyrannus lancensis if it's valid (otherwise it's T. rex). Interesting to compare it to my other small Tyrannosaur teeth. The tip was probably broken after fossilization, but the gouges on the labial face may be inflicted while the tooth was in use. Note that the enamel is well-preserved with sharply resolved texture and is still clear.
  20. Hi all, Been trying to look for possible readings/ images of anterior dentary teeth of trex vs nano. Not sure if im finding it in the right place, but was wondering what a nano anterior dentary tooth would look like? As I dont think I have seen a nano anterior dentary tooth for sale, mostly rex for some reason. As i think those teeth look almost similar to a premax, though from what i remember, it would be highly unlikely to distinguish between a nano and rex premax unless the roots were still attached. Would you guys maybe know if there are any morpholoical difference
  21. Dino Dad 81


    Hi, I think I just got my best candidate for a Dakotaraptor tooth. I'd love to get your thoughts. It's: From the hell creek formation, South Dakota It's about 3/4" at its longest CH: 0.63" CW: 0.34" Mesial serration density: about 5-1/4 per MM Distal serration density: about 4-1/2 per MM Serration shape: looks "raptor" to me--or at least unusually long, thin, and rounded for a tyrannosaurid Base cross-section: Almond, no pinch whatsoever Mesial carina: straight as an arrow, serrations ending about 2/3 of the way do
  22. Nanotyrannus35

    pixlr-bg-result (13)

    From the album: Nanotyrannus35's Dinosaur Teeth

    A bit over an inch long.
  23. Nanotyrannus35

    Nanotyrannus tooth

    From the album: Nanotyrannus35's Dinosaur Teeth

    About 1 inch long. Gifted to me by @Troodon
  24. FF7_Yuffie

    Nano or Baby Rex?

    Hi, Any thoughts on this tooth? It is listed as a Nanotyrannus tooth, from Hell Creek Formation, Powder River County, Montana, USA. 0.78 inch. It's labelled as Nano, but the base is quite round--isn't that a sign of Rex? Any thoughts are appreciated. Thanks
  25. FB003


    Hi all. Wanted to post this tooth I got a while back for opinions. Seems quite a bit chunkier than the other nano's I have so figured it never hurts to verify. Tried following @Troodon's great guide but still new to this. Tip is cracked off so hard to tell exactly how big it was. Looking at the bottom view you can see a slight pinch on one side forming but you can't feel one on the other side when touching it. Feels flat. Hell Creek Garfield County, MT CBL 18.44 CBW 10.53 CH 33.19 (based on broken tip length) CH/CBL Ratio 1.79 Den
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