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Found 284 results

  1. Gorgosaurus libratus

    I have here a Tyrannosaurid tooth identified as Gorgosaurus libratus. It's 3/4" and the provenance is Montana. I'm wondering if the Gorgosaurus claim appears to be accurate. Thank you, Bellamy
  2. Richardoestesia or Dakotaraptor?

    Hi everyone, I just got this tooth from the Hell Creek Formation of Carter County, Montana. It was labeled as Richardoestesia, so based on the curvature, I was assuming the proper ID would be cf Richardoestesia gilmorei. However, when taking some measurements, what caught my eye was that the mesial carina appeared to end 1/3 from the base, and I started to wonder if instead this tooth could possibly be Dakotaraptor. These are the measurements I was able to get: Mesial: around 5.5-6 serrations/mm Distal: around 5 serrations/mm CH: around 16.5 mm CBL: around 7 mm CH/CBL: around 2.4 The crown appears to be smooth, the base is almond shape, and I believe the denticles have rounded tips. Please let me know what you all think. Also, some of the measurements may need double checking. Thanks!
  3. wikipedia.org/wiki/List of fossiliferous stratigraphic units in Montana Fossiliferous stratigraphic units in Montana.pdf
  4. Montana fossil locations

    Permission is granted to use any materials on these pages under the V2.5 Creative Commons License http://fossilspot.com/STATES/MT.HTM Montana fossil locations.pdf
  5. Montana fossil locations

    This file is from URL http://fossilspot.com/STATES/MT.HTM It comes with the following license statement at the bottom of the page: "Permission is granted to use any materials on these pages under the V2.5 Creative Commons License" Montana fossil locations.pdf
  6. Dinosaur skin???

    Hey i was wondering if anyone can help me identify if this is dinosaur skin? Back about 15 years my husband went to montana to help out on a ranch. There was a part of yellowstone going threw it and he found this there. It was out side of Glendive. Any help will help we have always belived it to be dinosaur skin, but everyone i try and contact just tells me skin is very rare. If its not skin what is it. Thanks for the help.
  7. I was very happy to see that recent publication that finally described the youngest known alvarezsurid Trierarchuncus prairiensis from the Hell Creek Formation. Material is rare but is most commonly overlooked and described as Croc or unknown theropod so knowing what to look for helps. I'm constantly on the lookout for this material and have been for years and have been fortunate to either find it or be able to acquire it over time. I used publications of other Alvarezsauridae like the Asian Mononykus and Canadian Albertonykus to help in the identification of my specimens. The paper is pay-walled but I included it for reference purposes. https://www.sciencedirect.com/science/article/abs/pii/S0195667120302469?via%3Dihub Extremely rare associated material found in SD
  8. Dino Bones

    I didn’t even attempt to mess with the bones, but am curious what it is. Montana judith river formation. I 100% know it’s not a shark
  9. Teeny Tiny raptor claw?

    Found in the Judith river formation of north central Montana. Measured in inches. All three items found within a few feet of each other, along with many other chunked up bones and a few other broken teeth and “claws?” I only thought raptor because of the very hollow bone combined with the tooth and claw. But I obviously I really have no clue. Thoughts?
  10. 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?
  11. Hey Everybody---I haven't posted in a long time. I am planning a trip up to Great Falls, Montana on the 19th of Sept, and I am going to slowly drive back to Texas over the following five days. I just want to see that area of the country mostly but it would be great to do some road-side fossil hunting on the way. Can anybody suggest a route or area where I could do that? I'm just feeling adventuress. Feel free to IM me. I will not steal your spots or tell anyone about them and if you are ever down here in central Texas I can return the favor. Let me know and thanks!
  12. Milk river Montana Dino bone

    I know there isn’t much to this bone - kind of like trying to identify a car once it got blown up then dumped in acid then left to rust, then crumbled. It’s the milk river of northern Montana in the Judith formation. After rinsing it off a bit, I just thought it was unique because of the two separate concave surfaces on the same bone - opposite sides. I picked it up because I liked the color of the preserved bony area, but the concavities must be somewhat unique?? The surfaces don’t show up super well in the images, but both smooth surfaces are definitely concave. Ideas?
  13. A couple of the bigger Tyrannosaurus teeth I found this summer in Montana Judith River formation. I found this 3" tyrannosaurus tooth in about 400 pieces and was able to piece about 80% of it together over about 3 weeks and 30 hours, the other one is almost as big but was only in about 30 pieces and is still a nice brown color. I am no professional and did not want to pay thousands to have someone do it for me. I would like to get it filled in and solid, is there some putty or epoxy used to fill it in and hold it all together? Also had some other smaller Hadrosaur teeth I believe and maybe a croc tooth but not certain. can anyone ID those?
  14. Montana Dino Tooth

    Milk river Judith river formation in Montana. It’s a lot bigger than our other trex teeth from the area, so just seeing what you guys think. It’s around 3” but I haven’t measured yet.
  15. Rule, R.G. and Pratt, B.R., 2019. The pseudofossil Horodyskia: Flocs and flakes on microbial mats in a shallow Mesoproterozoic sea (Appekunny Formation, Belt Supergroup, western North America). Precambrian Research, 333, p.105439. Archived PDF file More papers by Brian R. Pratt Retallack, G.J., Dunn, K.L. and Saxby, J., 2013. Problematic Mesoproterozoic fossil Horodyskia from Glacier National Park, Montana, USA. Precambrian Research, 226, pp.125-142. Archived PDF file Yours, Paul H.
  16. Dinosaur gastroliths

    I found these 5 well-polished dinosaur gastroliths (stomach stones)in Montana.
  17. Montana milk river finds

    A few milk river finds. North central Montana in the Judith river formation. the large first bone I figured was hadrosaur, but the more I look at the inside it seems to be a lot of sediment - so I’m not really sure how hollow it is. Thoughts? the second bone is super smooth bone and has a very defined hollow inside. Meat eater? the third I don’t expect much info about - it seemed to be some type of cranial bone - but I’ve got no clue. thanks for any help
  18. My wife and I went on a 7500+ mile ramble to break out of our COVID doldrums. Due to the virus we had to change up many of our original plans... which conversely added a number of additional fossil hunting locals as they allowed us to mostly avoid our fellow humans and maintain social distancing by many many miles. As part of our trip preparations my wife sewed us a number of masks, including a whole series of fossil hunting masks for me. Originally we were supposed to stay in Chicago, but we elected to avoid staying in the city, so we only got to do a drive by We started the trip with a bonus dig, meeting up with fellow forum member @minnbuckeye for a guided Ordovician hunt in Fennimore, Wisconsin (THANKS MIKE!) Unfortunately I neglected to take pics of the site so I will only be able to share a farm pic we passed on the way. Mike was a gracious host who kicked off the visit with a gift of several fossil samples from his home turf As with all of the fossils from this trip, all finds are as they arrived back home, no prep. Some of our finds from Fennimore:
  19. Milk river weird Dino vert?

    Milk river Judith river formation find - north central Montana. Looks like just over half of a large vert with large processes to me - but really no clue. Any thoughts?
  20. I recently learned that the Dinosaur Park Formation and in general the Belly River Group is in Montana! In parts of Kennedy Coulee, Milk River Badlands, is this true?
  21. A Hoploscaphites from Ron

    RJB offered an unprepped Hoploscaphites from the Pierre Shale of Montana a while ago which he was gracious enough to send to me, although he normally doesn't ship overseas. Thanks again, Ron! It arrived a couple of days ago and I could hardly wait to get down to it since I've had these on my bucket list for ages. You can see the stage he had it at in the link. Here's how it looked in my cabinet after a few hours with the stylus. It turned out that the smaller one at the front was just a partial, and since there was nothing much else except broken shell material to be found in the concretion, I decided to remove the ammonite completely from the matrix. This is the stage it has reached after roughly 10 hours of work. My abrader has unfortunately broken down and I've had to send it off for repair, so this beauty shall have to wait for a while before I can finish it off.
  22. One more milk river Montana find

    Another milk river Montana Judith river formation bone. Found with the rest of the bone, but it was all chunked and eroded out. This is the size of a large hand. Thought it looks like the end of a long bone - maybe hadrosaur because they seem to be the bigger Dino’s in that area - but it didn’t seem to fit in my search. thoughts?
  23. Judith river Montana bone?

    Found near the milk river in the Judith river formation of north central Montana. it’s just weird. Doesn’t look like bone, but it doesn’t look like petrified wood either. Had a paleontologist friend look at it and he was a bit stumped. thoughts?
  24. Hi all! I got a digital microscope for christmas and I'm finally getting around to uploading the photos I've taken on it. Here are some closeups I took of a piece of bone I found when I hunted the Cloverly formation in Montana for a morning back on my first ever trip out west in 2013. Looking back on that experience with the knowledge I have now, I can truly appreciate what a rare experience I had as I've learned that this particular formation is rare to be able to hunt on. I'll tell the whole story of how my family and I made it onto this ranch in the first place, but that's for another time. Pics from the cross section: Pics of the surface of the bone:
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