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  1. FB003

    Nano?

    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
  2. fgiarro

    Theropod tooth

    Hello- Some years ago I've bought this dinosaur tooth, labeled as theropod tooth; it comes from Carter County, South Dakota (Hell Creek Formation)- Its lenght is roughly 0,95" . I think it could be a tooth of a Nanotyrannus (or a juvenile Tyrannosaurus?), but I'd like to know the opinion of some expert about that- Many thanks in advance, Fabio
  3. 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.
  4. 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.
  5. TheDinosaurKing

    ID Please!

    Is this A Tyrannosaurus Rex or a Nanotyrannus tooth? Here's what I know: 0.75" (1.9 cm) Hell Creek Formation of Bowman County Nouth Dakota. @Troodon
  6. 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
  7. 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 libratus : Dinosaur P
  8. My first post on the forum was to see if anybody could show me an adult specimen of “Nanotyrannus.” I was more forceful in that approach because, from what I’ve seen on Twitter, “Nano” fans like to argue with paleontologists on the validity of the genus, even though these scientists have been studying dinosaurs for years and have degrees and Ph.Ds in different scientific fields. The evidence points them in a different conclusion compared to the public, and the fact that they are being so heavily resisted against with regards to this topic is baffling. I decided to play the “Nano” fans at their
  9. Hi all. I'd like to begin by thanking the members of this forum for the profound wealth of knowledge that you all have shared with me during my search for further understanding of dinosaurs, fossil collecting, and fossils in general. Prior to joining, I was a longtime lurker that regularly referenced this forum and its many posts to answer countless questions that I had, and I continue to reference it! The information contained on this site is invaluable. I would especially like to thank @Troodon for his amazing guides and detailed write-ups, such as the case made for Nanotyrannus. That really
  10. LordTrilobite

    Fun with 3D Printing Fossils

    So recently my father bought a 3D printer and we've been experimenting printing some cool fossils for a while now. It's a really cool technology. Though it can take a while to print a piece the results are really quite cool. A life size Archaeopteryx can take a few days to print if you don't keep printing during the night. Finishing up the prints afterwards can also take a bit of time. Cleaning off all the supports and sanding down rough surfaces can be quite the process. Then there's painting depending on the desired result of course. There are actually a lot of nice things that c
  11. Hi everyone, would like to ask what you guys think of this labelled “Nanotyrannus Foot Claw”? Never really seen Nanotyrannus claws on the market so have no idea how to distinguish between other tyrannosaurs. And does the coat/ layer also look too thick? Almost looks like varnish? Unless its just their lighting that makes it too glossy. Thanks guys
  12. I am a university student studying T. rex, so of course, I ran into the Nanotyrannus debate. People have been arguing about Nanotyrannus being valid, but there's a huge problem: No adult specimen. Unless someone has an adult, or even a subadult, specimen of Nanotyrannus (over 15 years old), it isn't a real genus. This is why I am here. I know people collect fossils and post pics of them on here, so I'm willing to see what people may, or may not, have. My question is: Does anybody have an adult Nanotyrannus specimen? In simpler terms, does anybody have a Nanotyrannus fe
  13. ThePhysicist

    Tyrannosaur distal denticles

    From the album: Dinosaurs

    Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA ~ 3.6 / mm Notice that the enamel is still clear, with the dentine visible underneath. If Nanotyrannus is valid, then this is Nanotyrannus.
  14. ThePhysicist

    Hell Creek Tyrannosaur

    From the album: Dinosaurs

    Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA If Nanotyrannus is valid, then this is Nanotyrannus.
  15. ThePhysicist

    Tyrannosaur tooth tip

    From the album: Dinosaurs

    Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA If Nanotyrannus is valid, then this is Nanotyrannus. Note that the serrations wrap around the tip ("apex") of the tooth as is common in unworn Tyrannosaurs.
  16. So over the past few days I was visiting Bozeman from Raleigh North Carolina as I was visiting the MSU campus because I've been accepted to start as a freshman in autumn 2021. And I hope you know what I am trying to major in. I mean you know what forum we're on I don't have to spell it out. Anyway, in that time I managed to spend all day visiting the Museum of the Rockies which is considered one of the Mecca halls for paleontology. Our crazy old boi Jack used to be Prof and curator there before... well you know. My home museum, the NC Museum of Natural Sciences are taxo
  17. Hi all, I could not resist and took another shot on my quest to obtain a Dakotaraptor tooth. Here the tooth in question this time: It was found in the Hell Creek Formation, Garfield County. Measurements are: CH 1,41 cm - CBL 0,68 cm - CBW 0,3 cm - denticles per 5mm are 22 mesial and 19 distal. Note the slight tilt of the denticles towards the tip of the tooth. It's the best fit I have found so far, what deviates from the dePalma description is the shape of the base, it has a pinch, but I would not consider it rectangular. As a side note, it looks exactly like the base of Acheroraptor
  18. I saw a Juvenile Tyrannosaurus rex tooth (or Nanotyrannus) with really good price.. Seller told that this is from Hell Creek formation, Garfield County, Montana. I can't find any oddity or fabrication... but I want to hear everyone's opinion since the price is too good to be true.
  19. Two Tyrannosaurid teeth that I ordered early this week has arrived. This is the first tooth that I want to show, which is a tooth of a juvenile Tyrannosaurus rex (or Nanotyrannus). Since I personally believe that the Nanotyrannus is an invalid genus, I think this is a juvenile Tyrannosaurus rex tooth. For those who do not agree, this is a Nanotyrannus tooth. This tooth is from Hell Creek formation of Garfield Co. Montana. This is an 1-3/8 inch, and has some chips and scratches at the labial side, but I think this is still a great tooth.
  20. Hola a todos. He estado viendo publicaciones durante mucho tiempo con dientes de nanotyrannus. Lo que me gustaría saber es si usted, que tiene más experiencia en la recolección de fósiles, podría identificarlos como pertenecientes a ese dinosaurio o no. De antemano muchas gracias. (Translated: Hello everyone. I've been looking at posts for a long time with nanotyrannus teeth. What I would like to know is whether you, who have more experience in collecting fossils, could identify them as belonging to that dinosaur or not. Beforehand thank you very much.)
  21. Squirrelman91

    Hell Creek Claw ID - Dakotaraptor?

    Hi everyone! I have a large claw from the Hell Creek Formation of Harding County, South Dakota that I was hoping to have help identifying. It is large enough that I initially believed it stood a chance at being tyrannosaurid, but it seems a bit more compressed than tyrannosaur claws I’ve worked with in the past - particularly on the lower ridge. The ventral surface of the claw is also distinctly flat rather than rounded, which seems unusual. Could this be a Dakotaraptor claw or is that just wishful thinking? Large Anzu perhaps? It is right around 1.75 inches across the length of the claw (sorr
  22. Here is some of my first 6 months of fossil collection ! ( some still in transit oversea ...) First of all I really enjoy spending time in this forum and I feel very lucky to be member of this forum ! some of my collection was ID by you guys Soooo...LET get started ! KEM KEM the mystery - My First Dinosaur fossil .... Abelisauridae tooth ! MY BEST theropod tooth in my collection ! My Mystery vertebra from Kem kem ... possible Theropod vertebra Sauropod tooth << Rebbachisaurus tooth from kem kem
  23. ThePhysicist

    Nanotyrannus serrations

    From the album: Dinosaurs

    Distal serrations of a juvenile Nanotyrannus lancensis (Hell Creek Fm., Dawson Co., MT).
  24. The_bro87

    T. rex or Nanotyrannus?

    Hello! I got this tooth as a Christmas present, and to me it looks like a T.rex tooth, but the shape of the base made me less sure. I was hoping someone could help get a accurate id. The tooth is 10/16 of an inch long, and was found in Garfield county Montana.It has similar serrations on both sides, so I thought it was a tyrannosaur tooth. The shape, lack of pinching at the base, and thickness made me think it was T.rex, and the base looked to me like it could be a maxillary tooth since it was more rectangular than oval, but I wanted to see if anyone thought it looked more like a Nanotyrannus
  25. Thecosmilia Trichitoma

    What's the deal with Nanotyrannus?

    What has been the outcome of the Nanotyrannus vs. juvenile T.rex debate? Is there now a definitive answer, or is it still a debated topic?
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