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  1. Although the research regarding this was only published this month, there has been a lot of intense speculation and controversy as to whether theropods especially Tyrannosaurus Rex were comparable to being "primates" of their time. "According to her findings, theropods had as many neurons in their brains as monkeys do today, with the T-Rex boasting "baboon-like" numbers of up to 3 billion neurons. That's a pretty scary level of intelligence for a killing machine the size of a house.With that many neurons, a T-Rex wouldn't have just possessed uncanny cognition. It also might have l
  2. This partial crown was collected from the Hell Creek Formation, Garfield County, Montana. I acquired it for a teaching collection because I think it tells a story. The basal section shows almost an inch in diameter. Is this a Trex tooth? The tooth shows antemortem enamel spalling and wear as described by Schupert and Ungar, 2005. It feels as though that the tooth was broken as a result of probably bone crushing and was worn smooth with continued feeding, then shed some time later. I would appreciate your thoughts.
  3. AranHao

    strange tooth

    Hello all I met a very strange tooth. The label is Tyrannosaurus Rex tooth. Its enamel is white instead of yellow under the UV light (the picture is a video screenshot). The last photo is another tooth under the UV light to show that the device is not causing the color difference. Have you met? This is the first time I've met. I'd like to hear your opinions on this. Thank you
  4. Updated Nov 25, 2022 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
  5. ThePhysicist

    T. rex tooth

    From the album: Hell Creek / Lance Formations

    It's remarkable that the minute features of this tooth can be preserved with such clarity after 66 million years!
  6. Pliosaur

    Tyrannosaurus Rex Tooth?

    Hello! Is this a Tyrannosaurus Rex tooth? Found in Hell Creek Formation of Garfield County, MT Tooth measures 1.75 inches, see picture with caliper Thanks in advance!
  7. Pliosaur

    Tyrannosaurus Rex Tooth

    Is this a Tyrannosaurus rex tooth? from the Hell Creek Formation in Carter County, Montana, USA! The tooth has great serrations, a good tip, a partial root, and no repair or restoration! It measures 1.077 inches (2.74 cm) along its longest edge (straight line) and measures .43 x .322 inches (1.09 x .818 cm) at its base!
  8. Hi all, saw this listing for a tooth, it’s from Meade County, South Dakota and looks to me like either a Nanotyrannus or Tyrannosaurus rex tooth. Want your opinions, I personally am leaning towards Nanotyrannus due to the pinch however it seems to be pretty robust. Thanks in advance measures about 1 cm
  9. Hello I was looking at a few teeth and wanted help with identifcation First one I’m almost certain is a tyrannosaurid, even though it’s in horrible condition and am leaning towards Tyrannosaurus Rex due to robustness and no pinch. it comes from Garfield county, hell creek form and measures .6 inch. Second one is also likely a tyrannosaurid, im leaning towards Nanotyrannus but it’s probably a indeterminate tyrannosaurid. It’s from hell creek form, no locality unfortunately. Size is about 1 3/8 by 1/2 inch. 3rd one seems to be a Acheroraptor, also no locality besides hell creek form.
  10. 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
  11. I just bought this tooth, it hasn’t arrived yet but I wanted to see your thoughts on the identification of the tooth. I personally am leaning heavily towards the Tyrannosaurus rex but want to see other peoples thoughts. The tooth is quite robust and probably would’ve been quite long if complete. It doesn’t have the pinch and yea that’s why I think it’s rex. The tooth is from Garfield county in hell creek formation and about 1 inch long. There seems to be a pinch on the first image but if you look at the last one you can tell it’s just bulging.
  12. ThePhysicist

    Tyrannosaurid vs Dromaeosaurid

    From the album: Hell Creek / Lance Formations

    As a theropod tooth aficionado, I thought it useful to compare two families present in the Hell Creek Formation. They become increasingly difficult to distinguish as they get smaller, but this graphic presents some features which may be used to differentiate them on two similarly-sized exceptional specimens. Keep in mind there is some variability due to position, ontogeny, etc., so it's beneficial to study more than one tooth for each family.
  13. Hi guys, just little wip with my version of TRex Skull Different mats and lights Some detailing
  14. Max-fossils

    Trix the T-Rex

    Hello fellow fossil enthusiasts, I should have posted this a long time ago, in fact I should have done it when I got home from the visit, but I guess I forgot... So here it is, with about 2 months of delay. So that day I went to the Naturalis museum in Leiden, Netherlands. I went there for a special reason: to see a record-holding fossil! And this legend is nothing less than Trix, the mighty T-Rex. What is special with Trix is that it's the only T-Rex fossil to be in a museum outside of America. Here is the story behind the beast: a couple were hiking in Montana,
  15. What do you think about this ? It has some repair done but can you show me where how much. Location: Hell Creek Fm., Powder River Co., Montana
  16. Here is my new wood grain Tyrannosaurus rex tooth. Found in Hell Creek, South Dakota and just shy over 1'40 inches. I really like the split with the serrations. Makes it extra special for me.
  17. Saskatchewan researchers have reportedly discovered an extensive network of blood vessels preserved in the fossil of a tyrannosaur rib. This discovery, if confirmed, would be the first of its kind. Sask. research teams make rare find inside Scotty T. rex fossil How dinosaur blood vessels are preserved through the ages Scientific Reports Who is Mauricio Barbi
  18. Rikache

    Albertosaurus and T-Rex teeth?

    Hi there everyone! I’ve recently been looking for a tyrannosaur tooth to add to my collection and I came in contact with a very nice seller who’s in possession of two theropod teeth. The main tooth I have questions about is the “Albertosaurus” tooth as that one seems to be the one which would be easiest to ID. I was wondering if it was truly an Albertosaurus tooth or if there was any other identification that could be given to it. The other tooth, the “Tyrannosaurus Rex” tooth, only has one picture and seems to be in two pieces. I’m aware that the single pic
  19. Hi there everyone! I've recently been adding specimens to my collection and I came across a listing advertising a juvenile tyrannosaur / nanotyrannus tooth coming from the Hell Creek formation in Montana. The seller is very reputable thus I have no doubt that the specimen itself is truly a fossil. Instead, I was wondering if anyone could help me positively identify the specimen as being from a juvenile tyrannosaur / nanotyrannus (depending on which camp you come from). Thank you!
  20. Hi! I'm looking for my first T-Rex tooth for my collection. I know all T-Rex teeth are pricey and I found this piece on website with acceptable price. So I need to make sure this is real T-Rex tooth. Seller said it is from the Hell Creek Formation, Garfield County in Montana, U.S.A. Thank you!
  21. Tigereagle12345

    Potential T. Rex Bone?

    I found this bone on a fossil hunting trip in North Dakota, it was identified as a theropod, probably a T. Rex. Can anyone verify this claim? Thanks for any responces! (The ruler is mesuring in centimeters)
  22. So I had been wondering, what characteristics of Tyrannosaurus bone make it identifiable as Tyrannosaurus? On the forum I think I've seen that "Honeycomb" structure means tyrannosaur. Just wondering if anyone has tips on identifying dinosaur bone as Tyrannosaurus.
  23. Nanotyrannus35

    Show us your tyrannosaur fossils!

    Show us your tyrannosaur fossils! My only tyrannosaur fossil is a small fragment of a tooth, but it has some really cool patterns. I can't post pictures right now but will later. So show us your fossils!
  24. This should be a Tyrranosaurus Rex Tooth. Correct? Info regarding the Tooth: Fossil information : Hell Creek Formation, Jordan, Montana, VS. Size: 58mm, Cretaceous (66 - 70 mil y) The tooth been left as found. Just some cleaning. Has a very nice natural wear on the tip. I have seen some other Tyrranosaur Rex tooth trough searching, they were much rounder and thicker towards the lower end. Perhaps those are located differently in the jaw more to the back to crush meat. Looking forward to your thoughts
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