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Found 93 results

  1. Tyrannosaur tooth ID

    I bought this tyrannosaur tooth a while back and it says it’s a albertosaurus, gorgosaurus, or daspletosaurus. Is there anyway to narrow it down any further? It says it was found in the Judith river formation of eastern Montana and it measures just over an inch. Any and all help is appreciated.
  2. Tyrannosaur teeth variations

    My son found a long skinny tyrannosaur tooth on South Saskatchewan River, West of Medicine Hat (oldman formation? Formost FM? DPP?) We've found all sorts of tyrannosaur teeth - short fat ones, short wide narrow ones, long fat ones, long narrow ones (Richadoestia), and all sorts of variations of curves or straight Species, age, and tooth position may all be factors. I'm just wondering if anyone has more info? This tooth is relatively narrow and thin for its length. I can post other examples of teeth found in the same area that are quite different from one another. I believe these may be examples of gorgosaurus or daspletosaurus as they were found in the DPP formation
  3. A response to Woodward et. al 2020's refutation of Nanotyrannus. Argues that specimens BMRP 2002.4.1 and BMRP 2006.4.4 fall outside the growth curve of Tyrannosaurus. https://advances.sciencemag.org/content/6/1/eaax6250/tab-e-letters
  4. Juvenile Nanotyrannus lancensis

    From the album Dinosaurs

    A tooth from a juvenile Nanotyrannus lancensis. Only missing the very tip.
  5. Two Medicine Tyrannosaurs

    I'm hoping someone can provide a little information about tyrannosaurs of the Two Medicine. Somewhere I thought I picked up that Daspletosaurus and Gorgosaurus were the only ones found in Montana (with Albertosaurus being absent in MT). But now I'm not finding that, so I'm wondering if I just imagined it. Additionally, I keep seeing conflicting information as to when Daspletosaurus and Gorgosaurus lived (I'm seeing 83 Ma but other places 76 Ma with several other times around there). Can anyone share an article or two that describes the current understanding of when these animals lived?
  6. Bite mark on a tyrannosaur tooth?

    Hey guys, I found this tooth that has what looks to be fossilized with a slice from a bite. I'm not sure if that is what it is. Has anyone else ever seen this? It's a first for me.
  7. A. sarcophagus or T. rex?

    Hello all, I collected this tooth last weekend along the Red Deer river in Alberta, and would like to know if it's possible to differentiate it as either A. sarcophagus or T. rex. I'm about 90% sure that it's from a deposit of the Horseshoe Canyon Formation, but the region also has exposures of the Scollard which introduces the possibility that this is from Tyrannosaurus. I had to leave the tooth with a friend until I can apply for a disposition certificate, so I can't get any additional photos, but I made a point to get pics of the major diagnostic features used to ID theropod teeth. Denticle spacing is 0.5mm, or 2 per millimetre: Thanks.
  8. Hi, I’ve been working on my project for a while now and I’ve decided to ask everyone to show there Alberta Tyrannosaur fossils! And if it’s teeth would you be able to put the Mesial and Distal serration count over 2mm. Thank you!
  9. Tyrannosaur tooth

    Hi I’m wondering what are your thoughts on this Tyrannosaur tooth? It’s 1.25 inches and is from the Dinosaur Park Formation of Alberta.
  10. Tyrannosaur tooth from new mexico

    Hello I recently got these two Tyrannosaur tooths form new mexico close to Farmington what could they be form? The more complete one is a inch long the other is half inch.
  11. Unidentified Theropod Tooth 3

    I was going to wait until tomorrow night to post the 3rd tooth but i got around to taking some pictures and measurements now so here is Unidentified Theropod Tooth #3. Judith River Formation Hill County Montana Crown height 15 mm ( broken base ) Serration count 17 per 5 mm distal 20 per 5 mm mesial I do not see a twist in the mesial carina This tooth is more compressed than the other two teeth the first being dromaeosaurus. Saurornitholestes perhaps?? @Troodon
  12. JRF Unidentified Theropod 2

    This is the second unidentified theropod tooth i just recently received. This tooth has a broken tip and its missing most of the mesial serrations. These are the measurements i observed followed by pictures for your own assessment. TOOTH 2 JUDITH RIVER FORMATION HILL COUNTY MT Crown height 12 mm ( missing tip ) Distal serrations are 3 per mm Mesial are 4 per mm There looks like there is a twist in the mesial carina Dromaeosaurus/Tyrannosaur?? @Troodon
  13. Unidentified Theropod

    Whats up everyone!? So i just received 3 new " Unidentified Theropod " teeth . I will be posting 1 a night for the next 3 nights. All of these teeth were found in the Judith River Formation in Hill County Montana. Heres Tooth #1 Judith River Formation Hill County MT CH 16.5 mm 14 serrations per 5 mm on the distal side of the tooth 17.5 serrations on the mesial side of the tooth Twist present on the mesial carina My thoughts - Dromaeosaurus Albertensis..... Tell me what you all think? @Troodon
  14. Unidentified theropod

    This next tooth im posting is another one from the Hell Creek Formation. It was found in the Tooth Draw Quarry in Butte County South Dakota. Its CH is 14.5 mm CL is 5.5 mm Its got a round base I wish i could give you a serration count but there arent any so this may be a tough one. Paronychodon maybe? Give it your best guess! @Troodon
  15. unidentified theropod

    Whats up all! I havnt posted in a while mainly due to just having everything all over the place since we've moved back into our house after a long time away due to renovation. I still have a ton of fossils in my collection and alot of unidentified teeth that im going to try and post on here more often.....ill be posting 2 tonight with the first being this tooth here : Its from the Hell Creek Formation, Tooth Draw Quarry , NE Butte County, South Dakota. Its CH is 13 mm The CBL is 8.5 mm Distal serration count is 3 / mm Mesial serration count is 4 / mm Base has an oval shape to it. Ill post a bunch of pics since some are better than others...anyway let me know what you all think ! @Troodon
  16. Hello everyone! I found this little tooth for sale and was wondering if it could be ID'd as a Nano or T-Rex. It is from the Hell Creek Fm, Garfield Co, MT and is 12mm x 8mm x 4mm. I thought it had the chance to be a T-Rex maxillary tooth since I don't see a pinch on the base and has a robust tip. Thanks for your input!
  17. Fossil ID Rex or Nano

    Hello everyone, On this edition of Rex or nano, we have this nice little mailbox score I got earlier this year. The seller and I are reasonably certain that it is a young adult rex. But I wanted to bring it to you folks to get your assessment. It matches the locality of Rex ( hell creek, from a microsite in Carter county) and based on my research from the forum and elsewhere it checks out as tyrannosaurid. (Ie: robustness and seemingly no pinch) Bonus question: I'm also curious on the placement of the tooth in the animals jaw. I have reason to believe it may be a right maxillary tooth.
  18. My largest dinosaur tooth yet

    I just got this and it will be arriving soon, It will be my largest dinosaur tooth yet once It comes. It’s a Tyrannosaur indet for now and it’s from the Judith River Formation. Just wanted to share this. I wanted to share more information compared to my other topic.
  19. My Tyrannosaur research

    Hi I decided to make a post about my main research project right now on Campanian Tyrannosaurs specifically Daspletosaurus. Today I have found something to tell teeth from the Judith River Formation and Dinosaur Park Formation. This could also do with the Tyrannosaurs prey or locality. I found out that Judith River Formation Tyrannosaur teeth serrations are more circular and more round compared to the same time Dinosaur Park Formation Tyrannosaur teeth serrations. The Dinosaur Park Formation Tyrannosaur teeth serrations are more longer skinner and more chiseled like but not like other Tyrannosaur teeth from other areas like T. rex’s teeth serrations. Certain Tyrannosaurs in different areas and times would/could of had unique serration morphology probably dew to there prey. I did this on multiple teeth from the Judith River Formation and Dinosaur Park Formation to strengthen my hypothesis. Any opinions on this topic would be great. I will post more on my research here on this and other topics on the Tyrannosaur/Daspletosaurus. I have been doing research on this Daspletosaurus from the Dinosaur Park Formation and it’s close relatives because it was the first dinosaur fossil I’ve ever found. I’ve liked fossils and dinosaurs since I was 2 but in 2018 I went to Alberta and found my first dinosaur fossil which was a fossil from the Dinosaur Park Formation Daspletosaurus sp. Thats why I have been researching on this topic. The serrations I found on Dinosaur Park Formation Tyrannosaur teeth. The serrations I found on Judith River Formation Tyrannosaur teeth.
  20. DSDI between 0.8 and 1.2

    Hi I have a question, I went back since I had some time and re measured my Tyrannosaur tooth denticles. But there both the same size, the Mesial and Distal are both 6. And the DSDI is 1, what would this mean? Thank you!! @Omnomosaurus, @Troodon
  21. Tyrannosaur teeth decision

    Hi I have a question would a whole tooth be better then a whole bunch of pieces of a tooth? I found some Tyrannosaur teeth and there was a whole tooth for a more expensive price and there was a whole bunch of tooth pieces for a lot cheaper then the full tooth. Which would be better for research purposes? Thank you!!
  22. British Columbia’s Tyrannosaur

    Hi I have a question, has there been anything on the Tumbler Ridge Tyrannosaur? And have they identified it in any way yet? Thank you!!
  23. Baby T-rex 3d print

    Here is my baby T-rex 3d print. 3d files came from https://cults3d.com/en/3d-model/various/life-size-baby-t-rex-skeleton-part-01-10. This one took me about 8 months to complete.
  24. Hi I found this with the rest of my fossil replicas and was wondering if it could be a Rex tooth or another type of Tyrannosaur tooth. I don’t know if I can post this here or get an ID on it since it’s a replica but I got it at the Royal Tyrell Museum in Drumheller, Canada it’s a replica of one of there specimens. And I just wanted to know what it could be since it seemed strange to me on how skinny and long it is, Thank you!!
  25. Asian Tyrannosaurid Tooth

    This is a tooth I have purchased, and I was wondering if anyone had any idea on a species for this guy? The seller said it was from Uzbekistan, but the colors are very different from teeth I've seen from that area. Any input or information is greatly appreciated! The tooth is 2.75 inches long.
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