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Found 35 results

  1. Daspletosaurus drawing

    I recently just finished a drawing that took me a few weeks of the Daspletosaurus specimen FMNH PR308 and just wanted to share it.
  2. 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.
  3. 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
  4. Hi just got these two fossils today! And was wondering did I get it right on saying this Daspletosaurus tooth was a mesial tooth? Also i called it a Daspletosaurus because it’s DSDI was over 1.2 and I think it’s a mesial tooth. In the photo it’s beside my smaller Judith River Tyrannosaur indet tooth. Also is it possible to tell what this dinosaur finger bone is? Thank you! dinosaur finger bone
  5. link Reassessment of a juvenile Daspletosaurus from the Late Cretaceous of Alberta, Canada with implications for the identifcation of immature tyrannosaurids Jared T.Voris, Darla K. Zelenitsky, François Therrien & Philip J. Currie NATURE Scientific Reports | (2019) 9:17801 | https://doi.org/10.1038/s41598-019-53591-7
  6. Hi I heard there are two Judith River Formation Daspletosaur species, an earlier one and older, is this true? Because the Daspletosaurus specimen Sir William being an older species from 79 to 77.5 mya and possibly D.torosus, D.honeri or another new species being the younger Daspletosaur species from 77.5 to 75 mya. Or is it just one Daspletosaurus in the Formation?
  7. 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.
  8. 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.
  9. 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
  10. Hi I decided to make this since the new Tyrannosaur from Alberta’s Foremost Formation, Thanatotheristes deerootorum has just been named and described. Enjoy!! Tyrannosaur bearing Formations in Canada: Formations in Alberta but most of the Formations on my list are I Alberta anyway. Horseshoe Canyon Formation 74-68 million years ago, Alberta: Albertosaurus sarcophagus, possibly Daspletosaurus sp. but no compelling evidence so far. Oldman Formation 78.2-77 million years ago, Alberta: Daspletosaurus torosus, Gorgosaurus sp. Foremost Formation 80.5-78.2 million years ago, Alberta: Thanatotheristes deerootorum, possibly Gorgosaurus sp. Milk River Formation 84.5-83.4 million years ago, Alberta: Tyrannosaur. indet could be a species of Thanatotheristes, possibly Gorgosaurus sp. Scollard Formation 68-66 million years ago, Alberta: T. rex, possibly Nanotyrannus Formations in British Columbia: Wapiti Formation 76.8-70 million years ago, Alberta, British Columbia: Unknown Albertosaurinae either Gorgosaurus or Albertosaurus, possibly Daspletosaurus sp. Tumbler Ridge 135-74 million years ago, British Columbia: Tyrannosaur. indet Formations in Saskatchewan and Manitoba: Dinosaur Park Formation 77-75.5 million years ago, Alberta, Saskatchewan: Daspletosaurus sp., Gorgosaurus libratus Frenchmen Formation, 68-66 million years ago, Saskatchewan: T. rex, possibly Nanotyrannus Bearpaw Formation 75-72 million years ago, Alberta, Saskatchewan, Manitoba: Daspletosaurus sp. one specimen from Daspletosaurus sp. that drowned. For now these are all the Tyrannosaurs known from Canada. No Eastern Tyrannosaurs in Canada yet either but maybe someday. I will also update this and add as more information comes available.
  11. New Tyrannosaurid from Alberta

    Well it was about time but we have a new Tyrannosaurid from the Foremost Formation of Alberta called Thanatotheristes degrootorum. Its part of a new clad called Daspletosaurini which comprises other Daspletosaurus spp. The foremost is a mid Campanian deposit. Its the first described Tyrannosaurid from this deposit. This represents the earliest stratigraphic occurrence of diagnostic tyrannosaurid material from Canada. Its a paywalled paper https://www.sciencedirect.com/science/article/pii/S0195667119303611 From Wiki
  12. Partial Daspletosaurus tooth?

    I just got this tooth in the mail today. It’s a partial tyrannosaur tooth, and it’s from the Judith river formation. I know it was found in Montana, but that’s it for locality. Despite it being partial, it’s approximate 1.25 inches long, and it looks to me like it would have been much larger if complete. I know that Daspletosaurus and Gorgosaurus teeth are indistinguishable, and that you can really only call teeth around 3.5 inches Daspletosaurus. I was wondering if it would be safe to assume that this is a partial Daspletosaurus tooth because the small piece I have is already over an inch, and it looks to me like it could easily have extended an additional 2 inches.
  13. I was searching the internet earlier today and found out that all Aublysodon teeth where that of Tyrannosaurinae juveniles. From Two medicine formation Daspletosaurus horneri, from Judith river formation and Dinosaur park formation Daspletosaurus sp., and from Hell creek and Lance formations T-rex, and so on... The study was done by Dr. Phil Currie, hope this helps with teeth like this!!
  14. T. rex ancestor?

    I read an article a while back that compared what the writer considered to be the most likely ancestors to T.rex. According to the article, Daspletosaurus is the most likely ancestor to T.rex. The article had some pretty interesting points about anagenisis, and how D. torosus probably evolved into D. horneri, and that the entire lineage ended with T.rex. One of the more interesting things I read was that a lacrimal bone was found in the Judith River Formation, and it was thought to be from T.rex. The article said that Daspletosaurus had eye sockets more similar to T.rex than Albertosaurus or Gorgosaurus, and because of this was likely an ancestor. This sounded reasonable to me, but I understand you can’t trust everything you read online, and I wasn’t sure what the current scientific consensus was on the ancestor to T.rex. This is the link to the article https://magazine.scienceconnected.org/2017/03/dinosaur-gave-rise-tyrannosaurus-rex/
  15. My Collection

    New to collecting and this site, thought I’d debut my small collection in my first post. Any comments or tips would be appreciated.
  16. Tyrannosaurid Indet Confirmation

    Hello all, Recently acquired 2 teeth, found and sold together, that I would love some insight and second opinions on. Both teeth are described as Tyrannosaurid Indet, from the Judith River Formation. The seller described that he purchased them both together from the harvester, but due to the fact he was not the original collector, the information is isolated to the above information. Smaller tooth is 15/16" long, dark chocolate color, and 1/4" wide. Serrations are present on front and rear edges, with serrations starting midway on the front edge. Larger tooth is missing the front edge, appears sheared. Length is 1 1/8", width 5/16". Serrations present cleanly on rear edge, but again completely sheared from front edge. Color also deeper chocolate brown, but more horizontal banding. Can obtain more detailed and specific measurements of other needed dimensions if needed. Mainly I'm looking for a confirmation of Tyrannosaurid Indet distinguished from other theropods in the area at the time, as I have little experience positively IDing smaller tyrannosaurid material. I've actively worked on distinguishing Carcharodontosaur teeth from Rugops in the field in Morocco, but this is out of my field. All help is greatly appreciated! Will post more pictures in comments
  17. Hi everybody, I've seen this daspletosaurus tooth, what do you think about that. Is It classificable like Daspletosaurus or indet. theropod tooth? The Sellers says that cane from Hells Creek formation Larfield 60x15mm Thanks
  18. Daspletosaurus tooth?

    Hello everybody So this tooth here is up for sale. Described as a Daspletosaurus tooth from the Judith River Formation. (Not more information) Length: 5,3 cm or around 2 inches. There seems to be some crack repair on the tip but other then that it looks good to me. What I wondering is, if it's possible to describe this as a Daspletosaurus tooth? Or are there just to few information for a proper identification? Any help on what I am looking at is very welcome. Thank you!
  19. On Sunday I took a trip to the Natural History Museum in London. I queued up before it opened at 10am and even before then there was a long queue. I have not visited this museum since I was a child and spent an entire day there (10am to 4.30pm - a long time). I was surprised as it is a lot bigger than I remembered and there was so much to see. This place has the most wonderful things and is an incredible place to learn. The museum showcases a Baryonyx, Sophie the Stegosaurus (the world's most complete Stegosaurus) and more! The moving Trex and Deinonychus are also really realistic in the way they move. If you like your dinosaur teeth, the Megalosaurus and Daspletosaurus teeth are out of this world! There is something for everyone in this museum and I would highly recommend that you visit here if you have not already! A lot of the dinosaur specimens are casts taken from other museums but they are still cool to look at. I had taken the photos on my SLR and due to the size of the photos I had to reduce the quality of them to be able to post on the forum which is unfortunate but it's the only way otherwise the photos would take a really long time to load. There are more non-dinosaur related photos that I will be posting at some point later on but may take me some time to pick out. Enjoy the photos from this section of the museum! Blue Zone Dinosaurs (has a mix of some photos of crocs too)
  20. Seller has listed these teeth as Daspletosaurus from the Judith River Fm, Hill County Montana Can you determine if this is a correct ID for these teeth. Thanks .
  21. Daspletosaurus Tooth?

    Hi there, I am thinking of buying a Daspletosaurus Tooth and saw this listing on Ebay (pictures below). Please can you tell me if this is a legitimate tooth from Daspletosaurus? Or if anyone has a similar quality tooth that they are willing to sell, please let me know! Thanks
  22. I saw this on a number of different posts by the Tyrrell and thought it would interest our members. Clips and photos courtesy of RTMP. The Royal Tyrrell Museum collection includes one of the best-preserved Daspletosaurus theropod skulls. The skull is unique in that it is a disarticulated skull, where all the bones were found separately and were not crushed flat during fossilization. Daspletosaurus was a large tyrannosaur that lived 77.3 – 75 million years ago in Alberta and is closely related to Tyrannosaurus rex. The left maxilla (upper jaw). Note the teeth at various stages of growth. Dinosaurs continually replaced their teeth throughout their lives why the different sizes in the jaw The skull bones of the Daspletosaurus torosus were first discovered in 2000 near the Milk River in southern Alberta, and it took until 2011 for all the pieces to be collected. Since the individual pieces of the skull were separated, it was not obvious where each bone was located in the quarry. Researchers waited until further pieces of the skull eroded out of the ground, rather than searching for them. The left pre-maxilla (front of the upper jaw) in the field. Left pre-maxilla (front of the upper jaw) prepared. As fossil bones are extremely fragile and often heavy, they can be difficult to manipulate and handle. That makes it difficult for researchers to study certain specimens, or for them to be displayed. Although they have the majority of the skull of Daspletosaurus torosus in our collection, it is too fragile to piece back together. As a solution, they decided to create a cast and display it as an exploded skull. Exploded skulls are a common tool used to teach anatomy, allowing for examination of the individual pieces of a skull. This will allow researchers to examine all the bones that make up a theropod skull from multiple angles. Since certain pieces of this skull of Daspletosaurus torosus are too delicate to be cast using traditional methods, they created a digital model of the skull using photogrammetry. By taking multiple photos of each piece, their technicians were able to create digital models of the skull that were then 3D printed. This project is the first time the Museum has 3D printed a cast of a specimen and it was very successful. To show all 41 bones of the skull of Daspletosaurus torosus, they mounted the cast as an exploding skull. They suspended the specimen in the air to determine the position of the pieces. Once the positions were finalized, a mount was constructed to hold the specimen A mount is then created. Daspletosaurus torosus is now on display! This display was one of their most difficult and technical projects yet, using new technologies and artistic techniques to create the cast and mount. As far as they know, it is the only exploded dinosaur skull in the world Photo of player Found that the player moves quite fast. Move the forward > with your finger for better results DWLAqm2XcAEohbq.mp4
  23. Here's my Two Medicine formation collection from Montana. It's all Daspletosaurus besides one Saurornitholestes tooth. I'm hoping to get specimens of some of the Two Medicine herbivores in the future. Pics 2 and 3= Daspletosaurus tooth in matrix Pics 4 and 5= Daspletosaurus partial tibia Pics 6 and 7= Daspletosaurus toe bone partial Pics 8 and 9= Daspletosaurus vertebrae process Pics 10 and 11=Saurornitholestes tooth
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