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Found 177 results

  1. 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
  2. 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 quite complete. Initial unpacking. Starting prep outside After some exploratory prep using dental picks. I will likely start removing much of the bulk of the matrix in areas such as the orbit and nares with powered tools. The different isn't very visible right now since I was mostly working on small areas and further cleaning up areas where bone was already mostly exposed. Stay tuned for more!
  3. Unusual tooth or piece of bone?

    Does anyone else see tooth here? Kind of going back-and-forth between tooth and bone on this one.Found in South central South Dakota. @Harry Pristis
  4. Hi all! Found this outside of Scenic, South Dakota, USA near Badlands National Park (near a stream bed). I picked it up assuming it was petrified wood, but on closer inspection it looks like it may be something else. The stippled, cell-like pattern of the cross-section reminds me a little of coral. Thanks for your ideas!
  5. Fossil bone, or just a rock?

    Hey all! Found this mystery object outside of Scenic, South Dakota, USA, near Badlands National Park. The texture and shape made me suspicious of bone, but it could also just be an oddly shaped rock. Haven't done enough fossil hunting in the area to feel confident either way. Thanks for any insights!
  6. 2019 Hell Creek dig trip

    Yes, that title is correct I finally got my video finished and uploaded from last year's trip to South Dakota. This is a trip my son and I started making back in 2009 when he was 8 years old. Its always a fun time, with road trips and tourist trap stops, camping, exploring on top of the fossil hunt. The trip was awesome with us digging at a new quarry wall, lots of great fossils, but my gopro overheated a couple times and ate some of my footage. So I ended up putting this video edit on hold while I tried to decide what direction to take, and then I started prepping, and then I wanted to wait until I had the biggest pieces finished out to show.
  7. 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:
  8. South Dakota hunting sites?

    I’m driving back to Montana from Kansas this weekend and wanted to stop in South Dakota or eastern Montana to do some quick Dino hunting. Does anyone have any advice for the badlands area or western Montana? Preferably the badlands area. I heard you can just surface hunt in the badlands national park, but wanted to see what you guys had to say. Kind of a broad area. thanks
  9. A few finds

    Hello, Here a few odds and ends that I have found recently...the one on the left I call my petrified ham bone for obvious reasons...the other??
  10. Any idea??

    I found this along the Missouri River this weekend...looking for some insight on what it might be?? Any guesses?
  11. Hi there, guys. So, I got these from an internet auction. It's the first time I put my hands on this kind of piece. It doesn't "feel" fake or nothing, but I just want to be sure, so I thought I'd better get an expert opinion. What do you think? It's supposed to be Merycoidodon culbertsoni, from the Oligocene of South Dakota Badlands.
  12. Hell Creek turtle prep

    Earlier, I posted a box of some of my older material I found hiding in my garage. Included in that box were a couple of turtle bits including a partial carapace and partial plastron. This bit is a hypoplastron (if my research is correct) of Basilemys Axestemys?. This poor thing was in terrible condition when I opened up the foil pack. Here are the pics as I opened it and the opposite side (disintegrating even worse) after I glued back together. I took 30 minutes of cell phone video of the initial cleaning and then compressed it down. Sorry, theres no audio. This was a "quick and dirty" video and edit. Here are pics of both sides at the end of the day. Still a little bit left to do, but its very hard glue and delicate spots.
  13. Hi everyone. Before he had his accident caldigger sent me these pictures hoping I could help him identify it. We were never able to in over a month of researching and that is bothering me. Do any of you have any ideas. I just thought it would be nice if we could fulfill this request for him. I personally think he will know if we do... thank you.
  14. Possible bison find?

    Hey everyone, So I found some old bones as I was out hiking yesterday (a good way to social distance ). I have a suspicion they may be bison, but I realize I am in ag country were cows are plentiful. I found a scapula, a chunk of upper jaw with teeth, two femurs, and one mandible. I have been trying to possibly identify them but I have no way of proving anything without some help. I grabbed a cow skull, scapula, and mandible at a friends farm to help compare. I guess I should also point out that I believe these have fossilized- they are heavy and the burn test seemed to yield no burnt hair smell. Photo 1: Fossil Scapula (left) vs Cow Scapula (right) So the scapula I found is bigger but I don't believe that is conclusive evidence. Photo 2: Fossil upper molars (left) vs Cow upper molars (right) It appears the fossil molars are larger than the cow molars.... possibly indicating a larger bovid (aka Bison)? Photo 3: Fossil mandible (below) vs (Broken) cow mandible (above) I know the cow mandible is broken (and the opposite side as the mandible I found) but it is shorter and has more bulk at the bottom of its lower jaw curve. Not only this, but the dentary also appears different. Well everyone, what do you think? Just a regular old cow? Or something more unique? Thanks!!!
  15. While playing with my poo (the fossilized version), I noticed this imprint. It is adjacent to a bone fragment. I'm assuming it is the imprint of a piece that broke away from the bone inclusion. It looks a bit unusual/ornamental, but I am hoping it is recognizable to one of you brilliant bone folks. This is from the Oligocene, Brule Formation, South Dakota. @Carl
  16. Archaeolamna sp. South Dakota

    From the album Cretaceous Shark Teeth

    Archaeolamna from Carlile Formation, Grant County, South Dakota.
  17. Archaeolamna sp. South Dakota

    From the album Cretaceous Shark Teeth

    Archaeolamna from Carlile Formation, Grant County, South Dakota.
  18. I have had a bunch of broken bits of Oligocene mammal coprolites sitting in a cup for years. I got them before I had a proper microscope. I decided to pick through another one last night. This one had what I thought could be a rodent incisor. So I started excavating with my X-acto blade. As I uncovered the bone, I realized it was not a tooth. I started noticing these very fine crescent shaped objects (which I unfortunately did not photograph). So I decided to give the poo a little vinegar bath overnight. As I lightly removed an unremarkable bit of fossilized fecal mass this morning, it split away revealing what might be a feather. I wet a bit of downy feather and photographed it for comparison. What do you all think? @Carl, didn't you have a coprolite with a feather inclusion? If so, did it look like this? The bone that I exposed is very furrowed and hollow. Of course this may not mean anything other than it is partially digested. Could it be a bird bone? @Auspex Here is the before and after photo of the coprolite fragment. Here is a magnified image of the a wet modern feather and the possible undigested feather.
  19. Since I couldn't go out to dig for fossils, I decided to go on a micro dig. Today's dig was in a coprolite fragment from the Oligocene. Prior to excavation, the broken face of the coprolite looked like this. You can see a little bit of bone peeking through. After about an hour of excavation under 40X magnification, I uncovered what I think is a rodent tooth and possibly a toe bone and claw??? What do you think? Does anyone out there know their Rupelian rodents? Grinding Surface of the tooth: Side view showing roots: Small toe bone and claw or an fractured toe/foot bone? Is fossil poop cool or what???
  20. Old collection ID help needed

    I collected these when I was younger and living in the Black Hills, South Dakota. Because they were collected 20-25 years ago I cannot be more specific about the location. My family owned some land in the northern part of the Black Hills and they are most likely from there. I really don't have much knowledge in this area but both seemed interesting and I have always wondered what they might be, if anything. Thanks in advance!
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