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  1. fossils-uk

    Judith River Theropod Tooth

    Hey guys, I obtained this tooth at tucson this year direct from the finder. It is from the Judith river formation, hill county, montana. 2.2cm long. got a characteristic V shaped flattened area on each side of the tooth, which i have seen in nanotryannus but it can't be that ? as nano doesnt occur in the judith river.... or it's has been mislabelled? My question is tyrannosaurid or dromeosaurid? if so what could it be? thanks for your time. @Troodon
  2. Hello. I was wondering if anyone could help me identify this tyrannosaur tooth I recently added to my collection. It is said to be from the Judith River formation in North-Central Montana. Unfortunately, I don't have the county it came from. The tooth has the following measurements. Thanks for your help. CH = 40 mm CWB = 10 mm CBL = 16 mm MC = 18 denticles/5 mm DC = 14 denticles/5 mm DSDI = 1.29
  3. FF7_Yuffie

    Tyrannosaur limb end?

    Hi, any thoughts on this? From Hell Creek, Montana. 5.5 x 3.75 x 3 inches. Seller bought it ages ago, labelled as T-Rex bone but doesn't know if it actually is. It's quite battered, unfortunately, but hope there is enough to possibly ID it. I guess it would be indistinguishable from Nano, so it should be undeterminate tyrannosaur (unless it's Hadrosaur?) Thanks
  4. Nanotyrannus35

    Tyrannosaur tooth collection

    From the album: Nanotyrannus35's Dinosaur Teeth

    From front to back, Nanotyrannus tooth, Tyrannosaurus rex tooth fragment with serrations. tooth fragment from a large tooth, and Nanotyrannus tooth.
  5. I'd found this small partial tooth about a half an inch long, it looks like it is a theropod tooth and it has a strange wear facet thing at the bottom. I was wondering if I could get some advice on what this tooth is and what the strange wear facet is. Here are the pics. Thanks for any help
  6. Guns

    Tyrannosaur toe bone ?

    Hello and happy new year to Y'all . I need some help ID this toe bone from Judith river formation . Is this could be from Tyrannosaur ? / ornithomimid ? or some kind of Anzu-type dinosaur ? Regard Guns
  7. ThePhysicist

    T. rex tooth

    Identification This is a classic T. rex tooth. It's clearly Tyrannosaurid by its robusticity, similar serration densities on each carina (mesial carina counted by the "roots" of the denticles as they are completely worn off), and chisel-shaped serrations. Those qualities with its locality and formation mean it must be the one and only. Notes The Crown Height Ratio (CHR) suggests a posterior position (it's short and stout). There's evidence of wear on the tip and mesial carina.
  8. ThePhysicist

    Tyrannosaur tooth

    Identification Tyrannosaur teeth characteristically have similar serration densities on each carina, with chisel-shaped denticles. Though small, this tooth matches those qualities, and doesn't resemble other smaller theropods like Dromaeosaurids. Identified as Cf. T. rex based on its similarity to another, larger tooth in my collection. Notes This tooth is from a juvenile individual. Serration densities illustrated in the above photos. There is a slight pathology (bend) near the tip.
  9. This is my first of what I hope to be many posts on TFF, so any suggestions on how to adhere to proper etiquette or improve the reader’s experience is welcome. In 2020, I found my first few teeth while hiking the Alberta badlands. In hind sight, they weren’t all that impressive. But at the time, I was ecstatic! Needless to say, I was hooked. During the winter that followed, I found myself itching to get back out to see what else I could find. In an attempt to scratch my itch, I began looking for online forums and discovered r/fossilid on Reddit which then led me here to TFF
  10. ThePhysicist

    Tyrannosaur

    From the album: Hell Creek / Lance Formations

    Tyrannosauridae (Nanotyrannus-morph) Hell Creek Fm., Powder River Co., MT, USA A classic Nanotyrannus Tyrannosaur tooth: compressed and blade-like. Exceptional preservation, with a minor wear facet near the tip on the lingual side (indicating it's from the left maxilla). I really like the color.
  11. ThePhysicist

    Juvenile T. rex

    From the album: Hell Creek / Lance Formations

    Tyrannosaurus rex Hell Creek Fm., Garfield Co., MT, USA This is from the right maxilla of a juvenile individual (note the lingual wear). Art by RJ Palmer
  12. ThePhysicist

    T. rex posterior

    From the album: Hell Creek / Lance Formations

    Tyrannosaurus rex Hell Creek Fm., Fallon Co., MT, USA The CHR suggests a posterior position for this somewhat beat-up T. rex tooth.
  13. ThePhysicist

    Tyrannosaur tooth

    Identification Tyrannosaur teeth have similarly-sized serrations on each edge, and the serrations are chisel-shaped. This is a classic "Nano-morph" tooth being compressed and blade-like (which is the primitive condition of Tyrannosaurs). Notes This tooth has excellent preservation, with serrations crossing the tip, and clear enamel. There is a minor wear facet near the tip on the lingual side, indicating this is from the left maxilla.
  14. Joebiwan3

    Hell creek theropod tooth

    I have this tooth that i believe to be a small nanotyrannus but i just want to get confirmation so let me know what you think everyone. Its from the Hell Creek Formation. Garfield Ct. Montana. Its CH is 11 mm Serration count: Distal 12 per 3 mm Mesial 15 per 3 mm The base of this tooth is beat up so its impossible to see if it would have had that rectangular pinch that is characteristic of nano teeth. There seems to be no twist of the mesial carinae In my opinion the serrations look peg like as seen in nano teeth.
  15. ThePhysicist

    Tyrannosaur teeth

    From the album: Hell Creek / Lance Formations

    Tyrannosauridae Hell Creek Formation Tyrannosaur teeth from various counties in Montana. Largest CH (Crown Height): 22 mm
  16. Hello, I noticed on some pictures on Teeth in the past and recent there are allot of scratch marks. I was wondering what they are ? Perhaps I silly question, but im just learning as i go. Are these from excavating ? or did the Dinosaur did this by biting during its live. (photo by Roby)
  17. ThePhysicist

    Juvenile T. rex posterior

    From the album: Hell Creek / Lance Formations

    Tyrannosaurus rex Hell Creek Fm., Carter Co., MT, USA More information Art by RJ Palmer
  18. I messaged seller a week ago for extra photos and haven't heard anything back, unfortunately, so this is all there is. Sold as a Tyrannosaur vertebrae and Optical Condyle bone. Found in Baker, Montana. That's literally all the info there is--not even measurements, and there's been zero response from the seller unfortunately. So, sorry about that. If anyone can suss anything out from the dodgy photos, that would be great.
  19. From the album: Dinosaurs

    Tyrannosaurus rex Hell Creek Fm., Wibaux Co., MT, USA Minor compression, common in maxillary teeth. It closely matches my larger juvenile T. rex.
  20. ThePhysicist

    Posterior T. rex tooth apex

    From the album: Dinosaurs

    Tyrannosaurus rex Hell Creek Fm., Fallon Co., MT, USA Not in the best shape, but a clearly robust tip with some feeding wear.
  21. ThePhysicist

    Juvenile T. rex maxillary tooth

    From the album: Dinosaurs

    Tyrannosaurus rex Hell Creek Fm., Wibaux Co., MT, USA This is a juvenile Tyrannosaurid tooth. The serration densities are similar on each carina, the serrations are chisel-shaped and robust, the tooth is not recurved, and the mesial carina is straight. It closely resembles my larger T. rex maxillary tooth in cross section.
  22. ThePhysicist

    Infant Hell Creek Tyrannosaurid?

    Hi y'all, got this small theropod in the mail; I bought it suspecting it was Tyrannosaurid. Upon in-hand inspection, I believe that suspicion is confirmed. It bears close resemblance to one of my larger juvenile T. rex maxillary teeth. It also appears to have a slight pathology near the apex - a slight bend. @Troodon Tyrannosauridae Hell Creek Fm., Wibaux Co., MT, USA CH: 9 mm Mesial serration density: ~ 5.3 / mm Distal serration density: ~ 5 / mm Serration densities: Serrations:
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