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  1. Thecosmilia Trichitoma

    Fossil Hunting around Bismarck ND

    I have some relatives in Bismarck, North Dakota, and would like to know about fossil hunting opportunities in the surrounding area (preferably in a one hour radius of the city.) I already know about the Geological Survey digs, but would prefer hunting where you can keep what you find (or even just the common stuff.) Are there any pay to dig/ public access sites near Bismarck?
  2. Thomas.Dodson

    North Dakota Pierre Shale Trip

    I have an ambivalent relationship with the Pierre Shale. I try and try to find good sites that produce fossils but the end result is usually a fossil-less site. For a long time I quit trying exposures of Pierre Shale even though it's the closest fossil bearing exposure to where I live. About a year ago I decided to try the Pierre Shale again because it was close and I was too tired to go elsewhere, like the Fox Hills Formation in Central ND. Mostly I found worn Inoceramus fragments but to my surprise I found a nicely preserved caudal vertebrae from a mosasaur among float material. Following th
  3. 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
  4. Shell preservation. Complete with mouth aperture.
  5. 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 t
  6. From the album: Cephalopods Worldwide

    11cm. Pierre Shale Formation Campanian Late Cretaceous Found near Glendive, Montana, USA Thanks to Ron (RJB) for the raw material.
  7. I won't get to do much posting from the road, but since Mike opened the door showing off some of the wisconsin ordovician finds he found and helped my wife and I collect, I figured I would add a teaser from Glendive, Montana where I finally found my first ammonites in the Pierre shale south of town. This little guy was one of my favorite singles because its exposed on one side and completely encrusted with yellow selenite crystals on the other. I will take some clearer pics once we get home and get pieces cleaned up a little
  8. Ptychodus04

    Ammonites!!!

    I finished up a prep of a nice double ammonite block that I got from the illustrious @RJB as part of a larger trade for a trailer load of smoker wood last year. I think Ron said these were from the Pierre Shale. Is that right Ron? If so, does anyone know the ID? I don’t know these ammonites well. Here they are, happily atop my antique dental cabinet. Don’t judge my photography too harshly.
  9. After practically years of scouting properties in my area, I’ve finally found a decently productive site. To start, will just be some neat info about the site.
  10. Bozark

    South Dakota Map

    (Posted in SD forum as well, feel free to move) I thought this would be an appropriate addition- my hope is that this map will allow forum users to plan trips to SD! Threw this thing together for you guys in some spare time at work. The map shows the extent of common fossil bearing strata in the state of South Dakota, as well as some "no-go" areas- reservations and the like. If you guys want a certain area zoomed in on let me know! FossilsSD.pdf
  11. I_gotta_rock

    Fluorescent Bacculites.jpg

    From the album: Fossil Flourescence

    I was playing around with the UV lamp in my lab, seeing what might unexpectedly glow this afternoon. This was a nice surprise. It's an internal mold of Bacculites sp. with sutures that fluoresce orange under 345nm UV light. Bright orange like this usually indicates calcite, a mineral that makes up fossil shells and some modern ones, too. Between the mud-filled chambers, the shell was preserved while the exterior of the cone wore away. The shell material was either calcite to begin with or, more likely, began as aragonite (same chemical compound as calcite, but different crystal structure and g

    © C. 2020 Heather J M Siple

  12. I've been looking for hesperornis fossils for a while, and recently, an acquaintance presented me with a challenge: He would send me a bag of broken up hesperornis verts for me to assemble. In return, I had to send him the biggest and best vert back. He also warned me it could be a real headache. I took the challenge. Lo and behold! I was presented with over 60 broken pieces, some of which were tiny and terribly fragmented (not shown in picture) Nonetheless, I googled for pictures of hesperornis verts and put what limited knowledge I had on fossil assembly
  13. First time or second time in my intire fossil hunting life where I canceled on a trip. My son is a bit lucky cause he has a father who has connections. anyways, he took off for several days and went to a few different formations and I have to say,,, did extreamly well!!! Here are some photo's of some exraordinary fossils!!! Just a few pics,, more to come. RB Holy Cow!!! and yes, he's got the other side to make this a very large and complete Sphenodiscus!!! A super nice spheno!!! This one is going to be freakin gorgeous!!!
  14. IonRocks

    My most recent Pierre shale find

    Here’s one a friend and I have been trying to settle for a little while. One end of the argument is that this is an unusual rock carried off the mountains by glaciers. the other end is that this is a heavily eroded bivalve.
  15. Bozark

    Fossil Bearing units map

    Threw this thing together for you guys in some spare time at work. The map shows the extent of common fossil bearing strata in the state of South Dakota, as well as some "no-go" areas- reservations and the like. If you guys want a certain area zoomed in on let me know! FossilsSD.pdf
  16. davidcpowers

    Inoceramus Clam

    Specimen was collected on Oct 13, 2018. The location is Cedar Creek. It is 7 miles south of Glendive. The area is Pierre Shale. The specimen was in a concretion.
  17. Nimravis

    Pierre Shale, South Dakota Help

    It is so cold in the Chicagoland area I decided to go through fossils that I have not looked at in years. I came across a little container that contained a couple items that I collected back in the early 90’s. I am 99% sure that I collected thenm from the Pierre Shale along I-90, West of Wall Drug. I know there is a small portion of an Ammonite, but I wonder about the other pieces. I believe they all came out of the same concretion.
  18. I saw reference to something called "acid prep" for oil shale fish.... never heard of it, and would like to know more: what kind of "acid", and how is it used. ALSO-- I mainly want info on the prep of fish found in cretaceous Pierre shale-- the black, crumbly stuff. Anyone? Thanks!
  19. I cant do any fossil hunting anymore, but i can still prep. My youngest son is a real fossil hunter go gitter. He finds lots of stuff like his father used to do. He worked on this and then called me and asked if I would help out. He has a ME9100 that I gave him and he knows that I have a Junior Jack. A Junior Jack will remove 10 times the rock the 9100 will do. wish I had a before photo, but afraid not. Took me about 7 hours to get this far. Lots and lots of rock to remove. The appature on this Placenticeras is not correct but it was shaped in order to remove rock to expose this mal
  20. Oxytropidoceras

    News About North Dakota's Plesiosaurs

    Jeff J. Person & Becky Barnes, 2018, New Plesiosaur Exhibit at Heritage Center State Museum. Department of Mineral Resources Geo News. 45(2) pp. 1-4. https://www.dmr.nd.gov/ndgs/documents/newsletter/2018Summer/New_Plesiosaur_Exhibit_at_Heritage_Center_State_Museum.pdf https://www.dmr.nd.gov/ndgs/newsletter/2018Summer.asp Clint A. Boyd, 2018, A Pleasing Discovery from North Dakota’s Ancient Seas. Department of Mineral Resources Geo News. 45(2) pp. 5-10 https://www.dmr.nd.gov/ndgs/documents/newsletter/2018Summer/A_Pleasing_Discovery_from_Nort
  21. RJB

    Multi Ammo Rock

    I was moving some stuff around and doing a small bit of cleanup to make some room on my prep bench. Ran into a very nice little finished crab which i had forgotten about, and also ran into this multi ammo rock that ive been working on from time to time and then It got buried and forgotten. Put in about 3 hours of rock removal and its starting to look like something now. Its got a long ways to go still, but at least its finally gettin there. Where ever 'there' is. Ha!!! Anyways, I removed a heck of alot of rock from this rock after gluing it back together. Just glad I wasnt keeping t
  22. holdinghistory

    Another Pierre Shale Ammonite

    Finished another one of the ammonites. This one went a lot easier than the first after having a little more practice. Seemed to have a little better separation too. This one was almost entirely with my CP scribe, and just a little clean up and rock smoothing with the Aro. Here is the before.
  23. Peat Burns

    Pierre Shale Coprolite

    Here is another coprolite. Wondering if the class of organism that defecated it can be determined. I found it in a particularly desolate (in terms of fossils) exposure of Pierre Shale (late cretaceous) in NW Nebraska. It was the only fossil I found in 2 hours of hunting. Pic to left shows close-up with fish bone inclusions. @GeschWhat
  24. cleanbreaks719

    New Finds From Pierre Shale

    Picked up several specimens during my exploration of what I believe to be a local outcropping of the Pierre Shale in Colorado Springs. A decently preserved Baculites for sure with nice sutures and an unknown fossil. Any help this one would be appreciated.
  25. took a recent trip to an old honey hole in the springs with reserved thoughts that it may...no longer exist. I was pleasantly surprised. When I was a kid it was essentially a mud hole and fairly exposed to the average passerby so I tried hard not to get my hopes up, plus it had been a while since I had attempted any type of fossil hunting. Following a creek bed, I pushed my way through surprisingly thick brush, thick with sticks and severely overgrown trees and bushes. Even the small game trails along the bank of the creek were difficult to discern. As I walked, my hopes began t
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