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  1. I was looking at some of my collection yesterday and dextrose take pictures of my better mammal brain endocasts from the White River Badlands of South Dakota. The first piece is exposed on a partial skull of an Oreodont. This next piece is my favorite and I believe it is from an Oreodont. These other pieces I can only guess, but I would also think Oreodont. This small one appears to be from a rabbit. This last one was ID’d as coming
  2. I have 2 small selections of shark teeth that I recently acquired in a collection that I had purchased. These teeth are supposed to have been collected in North Dakota and South Dakota. The first selection was collected on 4-3-1986 in Moffit, North Dakota in the Cannonball Formation, which was referenced by the collector as being Paleocene (58 MYO). The next selection was collected in Edgemont, South Dakota from the Late Cretaceous, Green Horn Formation. Any help on th
  3. Nipponites

    Partial mammal lower jaw-Brule fm.

    Hello, I have just received this partial lower jaw, it is supposed to be from Leptomeryx evansi, but i have seen many skulls of L. evansi on the internet, and this doesn't look similar. It comes from the Oligocene of Orella member, Brule formation; South Dakota. I have got three questions; Who did this jaw belong to? What part of the jaw did these teeth occupy? Is that hole on the first photo normal? Or was made by an animal or disease? Thanks to everyone!
  4. Hello, I had a question about the coloration of the beautiful South Dakota ammonites from the Fox Hills formation/Pierre Shale. Namely, many Hoploscaphites/Discoscaphites ammonites have a milky white nacre of the shell, whereas others seem to have a vibrant red/brown sheen. For example here are two photos of Hoploscaphites nicoletti I found demonstrating the two types of colorations: I was wondering what causes the difference in this coloration, and whether one is more rare/valuable than the other? I want a nice South Dakota ammonite for my collection
  5. hadrosauridae

    It was a baculites graveyard

    Fossil Friday once again! This is the last of the South Dakota exploration trip, hunting the Pierre shale for cephalopods and hopefully a mosasaur. Although the first half of the Pierre shale exploration went pretty slow, it wasnt without a few nice finds. The second part, we were extremely fortunate in that we got to meet Neal Larson and hear a short talk about the local Pierre shale formation, and then he took us out to his personal hunting site.
  6. PaleoNoel

    Interesting Hell Creek Vertebra

    Hi everyone, I found this little, mostly complete vertebra in the Hell Creek formation of South Dakota in 2019. I don't really know what to make of it as it's very porous, and amphiplatyan (flat on both sides), although I'm not sure how much of that could be attributable to wear. I believe it's safe to cross of squamate (due to lack of concavity) and champsosaur (overall shape) off the list. While most of the crocodilian verebrae I have found in the hell creek have have a convex and concave end, I am aware that some can be found that are flat sided. The porosity of the bone makes me hopeful th
  7. PaleoNoel

    Pocket Gopher Femur, SD

    Hi everyone, I was just browsing @PrehistoricFlorida's website and my eye was caught by what was labelled as a pocket gopher femur (trust me there were many more impressive fossils that caught my eye as well). Reason being, I found a very similar bone on a hunt in South Dakota's Hell Creek formation back in 2019. I kept it, hoping in my heart of hearts that it was fossilized, but keeping my expectations low. The rusty staining on the bone made me think there was a chance it was just a beautifully preserved Cretaceous limb bone, but I knew it was most likely recent. It's about 2.5 cm long and .
  8. Happy Christmas eve, Merry Christmas, Happy Holidays and a prosperous new year! It may be Christmas eve, but its also Friday, which means its a Fossil Friday. I missed las week due to being sick. Today's video offering is from the first day of a long, multi-day fossil exploration trip in South Dakota.
  9. fossilhunter21

    20211207_163134

    From the album: Fossilhunter21's collection

    Fossil Type: Unidentified Bone Location: Pennington County, South Dakota This fossil was prepped by myself.
  10. fossilhunter21

    20211207_163319

    From the album: Fossilhunter21's collection

    Fossil Type: Unidentified Bone Location: Pennington County, South Dakota This fossil was prepped by myself
  11. fossilhunter21

    20211207_163255

    From the album: Fossilhunter21's collection

    Species: Jelezkytes spedeni Location: South Dakota
  12. Just returned from my fall collecting trip to South Dakota. Will focus on my finds and I've attached a couple of prior trips to see more of the area, fauna, finds and collecting gear. Spring 2021 http://www.thefossilforum.com/index.php?/topic/115998-spring-dinosaur-dig-in-south-dakota/ Fall 2020 http://www.thefossilforum.com/index.php?/topic/109554-collecting-trip-hell-creek-formation/#comments Before I get into my new finds here are some prepped items from my last two trips that I have yet to share A possible Troodontid metatarsal
  13. hadrosauridae

    2020 Hell Creek trip

    I know its not the most recent trip, but I finally completed the video for this annual trip to hunt for dino fossils in the Hell Creek fm of South Dakota. Next week I should have the video of the prep of the Neural arch and spines finished.
  14. Hi all, with Covid making it impossible to attend any shows here last year I was able to visit the Munich Show last weekend. Among others I’ve bought this tooth. Ive learned from you guys not to trust the ID done by the seller so after reading some posts here I doubt that the tooth is a ankylosaurus magniventris. To me it looks more like a Thescelosaurus. Am I correct with this opinion? Details provided by the seller: Hell Creek Formation North West South Dakota Thanks in advance for your expertise!
  15. fossilhunter21

    20211021_132503

    From the album: Fossilhunter21's collection

    Image 1 of 2. Species: Leptauchenia decora Location: Pennington County, South Dakota This skull was partly prepped by myself.
  16. fossilhunter21

    20211021_132423

    From the album: Fossilhunter21's collection

    Image 2 of 2. Species: Leptauchenia decora Location: Pennington County, South Dakota This skull was partly prepped by myself.
  17. garyc

    South Dakota trip

    My wife and I just got back from a three night trip to Hot Springs, South Dakota. Our mission was three fold. First, a visit to Mount Rushmore has been on our bucket list for several years. Second, I recently I’ve been in touch with Richard White who was previously the Director of the international wildlife museum in Tucson Arizona and most recently has become involved doing research out of the mammal lab at the Mammoth Site in Hot Springs. He has been studying Capybara and publishing papers for several years. After seeing pictures of the skull that I found on the Brazos River a few years ago,
  18. LordTrilobite

    White River Rhino Skull Prep

    Today I got this mostly complete Subhyracodon skull from the White River formation, South Dakota. Right now it still looks a bit rough since it's been crushed a bit and there's a bunch of sediment stuck all over the place. The specimen has been pretty well stabilised. So it's not very fragile thankfully enough. Almost all the teeth are present. Only one maxillary tooth is gone and the very tip of the premaxilla is gone. The 2 posterior premax teeth are still there, but the anterior ones are gone. Roughly half of the braincase is also missing on the back of the skull. Otherwise the skull is qui
  19. garyc

    Help for a visitor

    My wife and I are visiting at the end of September for a few days. We will be in Hot Springs staying at the Mammoth Site. I’ll be visiting with Richard White (The Fossil Forum member/paleontologist). I’m bringing my capybara skull I found a couple years ago for him to research and make a 3 D copy. I’m hoping to do some fossil hunting while there. Does anyone have a suggestion where I can get access to huntable areas nearby, even if they are pay-to-dig? Thanks!
  20. PEMBWL

    Is this a bone fragment?

    This specimen was found north of Red Shirt, SD. Is this a bone fragment?
  21. PEMBWL

    bone fragment ID

    This bone fragment was found east of Red Shirt, SD. Any ideas about the type of animal and bone?
  22. fossilhunter21

    South Dakota ammonite ID

    So I bought this ammonite at a shop while I was on vacation but it didn't have the species/genus with it. So I would really like to know what the species is (if possible). Thanks in advance!
  23. hadrosauridae

    Distal MT3 of a Hadrosaur

    Finished my latest prep. Now, I realize that in the worlds of both commercial and academic paleo, this is a useless, junk fossil. Its an unassociated, partial in poor condition, and any final monetary value doesnt meet the time invested in the prep. However, its special for me in that its my first "wild" find. I hiked, explored, tracked the float, found the end of this in the face of a wall, then excavated it. I was hoping for a much more complete fossil, but this was it. It is highly fractured and deeply root rotted. But I carefully disassembled all its parts, cleaned them, consolidated t
  24. ThePhysicist

    Triceratops prorsus Tooth

    Identification: On the ranch where this tooth was found, only T. prorsus skulls have been found in the 30+ years the company has operated there, lending a very probable, precise identification for this Ceratopsian tooth. (T. prorsus was one of the last dinosaurs, younger than T. horridus. The two species are also stratigraphically separated in the Hell Creek Fm.[2], so it makes sense that one may only find one species in a particular deposit.) For most Ceratopsid teeth (from the Hell Creek Fm., for example), only association with an identifiable skull can allow for identification beyond C
  25. I will be moving to Rapid City this fall for my masters, and would love to do some rockhounding, maybe find some fossils. I did find this great map; http://www.thefossilforum.com/index.php?/topic/76244-fossil-bearing-units-map/ And of course, I have state and other geologic maps (and university library if I want it, probably) at my disposal. I enjoy exploring new territory, for sure. But some tips on good areas/regions to look in would also be great. I am certainly not opposed to prospecting some myself, but tips from fellow rockhounds are always welcome! I don't know
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