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  1. A little slow in getting around to posting. 2 weeks ago my son and I got back from our yearly trip up north for fossil hunting. Like most years, we haul the tenement on wheels with us to save the crazy costs of hotel stays. We started out for the first 4 days in the Hell creek, digging with Walter Stein of PaleoAdventures. The first day was a little slow with lots of small tumbled bone bits and spitter teeth. Only bigger find was an unknown that I began to uncover, but didnt complete that day. The second day we changed where we were excavating and I
  2. Good evening to my fellow fossil lovers! This report has been on hold for a while, hovering near the top of my paleo-to do list. But to be honest, I haven't been on the forum as much these last few months and I've just sort of kicked the can down the road, pushing it off. Well here we are in August 2022 and I'm a whole year and some change removed from this excursion, but I say better late than never. With that out of the way lets jump into this adventure! I hope you're ready for... The Roadtrip Through Time: Colorado Part I: Pierre Shale In the winter of 2021 I ha
  3. hadrosauridae

    Mosasaur predation marks

    Today I was cleaning the baculites found on the last fossil trip, and found one VERY cool one. This segment looks to have clear and deep tooth holes in it. It is believed that mosasaurs fed on baculites, and the hole sizes would certainly agree with that.
  4. Hello, I have another tricky ID request with no provenance, for this section of a heteromorphic ammonite. Technically I did get an ID and provenance from the seller as a Nostoceras malagasyense from Madagascar, but the preservation looks very different (more grey/white than brown). This was a chinese seller on that auction site who had that generic ID for a variety of pieces so I suspect it isn't accurate, and he couldn't provide more info when I asked. In the past I did ask about this specimen on this forum using seller-provided photos; I was told it looks instead like
  5. Hello, I'm considering picking up this section of Didymoceras cheyennense (I believe living chamber) from the Pierre shale of Pennington county, South Dakota, USA. However I found out that a lacquer layer has been applied to it to accentuate the iridescence. Is this something that can be removed without damaging the ammonite? And would I use something like acetone to remove it? Thank you.
  6. I did this prep some years ago, about 10?, and it came out purty dang good. Video is 1 minute 51 seconds https://youtu.be/IkR2SccEdrQ
  7. sharkysaurus

    Possible shark tooth?

    I found this tooth today in Colorado Springs. In the Pierre Shale formation. It looks very shark tooth like. I prepped it out a bit to expose it more. I think it might be Pseudocorax granti ? ... but I'm not sure. Could this be a shark tooth and if so what species?
  8. 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
  9. 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.
  10. Our local geological society does a small but very nice "Earth Treasures Show" about this time every year. While most of what I picked up were more in the line of mineral specimens, I did score one fossil this year. Nothing spectacular, I realize, but better than anything I've collected on my own. Nice sutures. Incidentally, I just got volunteered to be our program director, which means I'm in charge of finding an interesting speaker every month. With COVID, we've been meeting by Internet the last few months, which has actually expanded our scope for speake
  11. Hi Everyone. I was fortunate to be able to take a weeklong vacation trip the week of Labor Day, my fourth since I began collecting fossils. I wanted to visit friends and family and do some collecting. I was able to do all of that. It was busy, but there was also some quality relaxation time. It proved to be a good break. I flew into the Denver airport, rented a car and drove to Colorado Springs where I was invited to stay with my second cousin and her family. Next morning I was on my way to Florissant Fossil Quarry. I've known about Florissant for over 50 years and over 40 years ag
  12. Day 2 of our exploration trip, this time we were exploring a ranch in the Pierre shale. This was a massive ranch which Walter had done a small amount of exploration years ago. The 3 teams split up again, and my group went to the farthest north of the ranch to begin. This required miles of off-road driving. Its incredible how much area some of these ranches contain! Even though we spent about an hour searching, we didnt find any fossils, although my son and I found 2 arrowheads. I was happy with those, as they were the first ones I have ever found. We moved on to another area
  13. hadrosauridae

    2 week exploration - day 4

    Day 4 was a special treat! Neal Larson came to the field station to give a brief talk on Ammonites, Baculites, and the Pierre shale formation. Then we loaded up and went to hunt Neal's own site, and OMG what a site it is! The only description that came to mind was "an embarrassment of riches". From the instant we stepped out of our cars, we were walking on baculites! The ground was covered with them. It wasnt about being able to find, it was just a search for quality. Neal had a goal for this hunt, and that was to find a Baculites with the jaws still in the chamber. For all his hunting
  14. What a trip my son and I had this year! We started out in the Hell Creek fm of South Dakota. This was a special trip through Paleo Adventures for his "veteran" guests who have already spent a few years with him and could operate without supervision. We started out hunting a new ranch. This property is virgin ground with LOTS of acreage that needed exploration. The group was split into 3 teams, each taking a different area. Our team was further split into pairs. So, it was my son and me, exploring for new outcrops. The sun was intense, the temperature hot, and hours of hiking and sta
  15. 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?
  16. 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
  17. 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
  18. Shell preservation. Complete with mouth aperture.
  19. 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
  20. 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.
  21. 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
  22. 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.
  23. 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.
  24. 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
  25. 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

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