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Found 241 results

  1. Ricky’s Field Museum prep

    Hey everybody! I realized I never made a thread for my internship at the Field Museum in Chicago this summer. I interned as a fossil preparator under Akiko Shinya in the McDonald’s Fossil Preparation Laboratory (that’s the “fish bowl” lab on the second floor right next to Evolving Planet with the big window). There were some amazing things being prepared in the lab - an Antarctic Lystrosaurus, lots of Dicynodonts, Green River fish (some massive Phareodus), Sauropod femurs and ribs, a massive slab containing several sturgeon and paddlefish - but I’m not sure if I am allowed to post pictures of them, so for the sake of confidentiality I won’t just in case. This is the lab, and I always sat in the red chair, right up next to the window. One of my favorite parts of this internship was seeing all the little kids so excited about what we were doing in there and interacting with them. I was preparing a Priscacara serrata (specimen PF 16961) from the Green River formation of Wyoming, Eocene (~52 mya). All I used was a pin vise and an Amscope stereoscope. This fish also seemed to have slightly “exploded” from the pressure of fossilization as well, it’s jaw was crooked and head smashed, thought most fins seemed surprisingly well intact. The prep took 199.5 hours to complete, from May to August. I finished the prep on the final day of my internship, staying late after the museum had closed to the public and all the others in the lab had gone home. But it was far worth it, because "your name will forever be associated with this specimen." -Akiko Shinya I took a picture at the end of every day and I made a time lapse with it to see the growth! The link is at the bottom of the post. (I kept that floating scale in front of its mouth because I thought it was kind of funny that it looked like the fish was trying to eat it!) You can watch the time lapse Here
  2. Yorkshire prep thread

    Rather than just post separate posts every time, I decided to condense everything into this thread. I don’t see many people posting Yorkshire finds on here, which is a shame as there are some brilliant specimens out here. Hope you all enjoy. Dan.
  3. Lyme Ammonite prep thread

    I have decided to do a live prep thread on a Dorset ammonite. The ammonite is roughly a foot across and is embedded in a big bit of matrix. I am exposing the ammonite using very basic tools, so fingers crossed I will post regular updates
  4. Oreodont prep

    Thought I would share before and after of an Oreodont skull I prepped out. It still needs some detail work on the teeth. I have reconstructed the 2 upper canines, my first time ever reconstructing any part of a fossil and havent decided if I want to reconstruct the rest of the skull. What do you guys think?
  5. For those wondering about my prep room here it is.
  6. Paraloid B-72 practical tips

    Found a paper today using Paraloid B-72. It’s a very useful read for any that prep
  7. Howdy all, I tried searching for answers on the search bar, but couldn't find anything, so I'm hoping someone can help me out. I was going through the fossil prep section and noticed that many people seem to start off with a large nodule and remove all the matrix to reveal the fossil hidden inside. My question is, how does one (a seller, or person out on a fossil hunt) even determine that a big hunk of nodule has a fossil inside if there are no immediate visible indications of a fossil from the outside? Once again thanks.
  8. From the album Western NY Fossil Hunts

    Eldredgeops rana trilobite with Stereolasma rectum horn coral (After prep). Devonian Hamburg, NY Found 2019
  9. I have the 5 year old grandson for a couple days and he has been talking about Dr. Grant from Jurassic Park. He loves to watch that movie when playing with his LEGOs from Jurassic Park. So I decided to grab a couple Oligocene fossils (upper Oreodont skull and partial skeleton) from South Dakota that have some work that needed to be done on them, plus I knew he could not due too much damage if I watched him, so off to prepping we went. He kept asking for a paint brush because that is what Dr. Grant used in the movie. After a little bit of time with a dremel and an electric scribe and of course a paint brush- he had enough and so it was back to LEGOs- lol, at least I tried.
  10. Well, I’m finally getting to dig into my truckload of fossils from my Wyoming trip with @RJB so it’s my turn to open up a prep thread. I spent a couple hours today poking around to find the perfect fish to start with. The 18” layer never disappoints. This good sized Diplomystus has 2 Knightia on top of it. I’m going to try to save both but I’m concerned that the right hand one is covering most of the Diplo’s skull. If that’s the case, the little guy will have to go! This is after about 90 minutes of scribe work.
  11. First attempt!

    Went to Virginia a few months ago and came home with a few Chesapectin nefrens encased in solid rock. This one was only exposed as a ring of shell material in a ball of clay, calcite, iron ,broken shell and who knows what else. Normally I prep things with soft brushes, dental picks, a water pick, and very gentle fingers. That wasn't cutting it this time and I had to get aggressive. I spent 3+ hours with a rotary tool and zero practice. It's no museum piece, but it's not horrible. I could simply collect the same species, from the same member of the same formation, at a much closer spot, where the matrix is much looser, but I gotta learn sometime. Suggestions for next time?
  12. First attempt!

    Went to Virginia a few months ago and came home with a few Chesapectin nefrens encased in solid rock. This one was only exposed as a ring of shell material in a ball of clay, calcite, iron ,broken shell and who knows what else. Normally I prep things with soft brushes, dental picks, a water pick, and very gentle fingers. That wasn't cutting it this time and I had to get aggressive. I spent 3+ hours with a rotary tool and zero practice. It's no museum piece, but it's not horrible. I could simply collect the same species, from the same member of the same formation, at a much closer spot, where the matrix is much looser, but I gotta learn sometime. Suggestions for next time?
  13. Looking for material to practice, like the u prep site but not as much of a gamble
  14. Need advice on fossil prep

    I am hoping to get some advice on how to handle preservation prep on a recently found section of mammoth tooth. I have soaked the tooth, removed debris/algae with vinegar, rinsed thoroughly and have the tooth soaking in the toilet tank. I plan on following Harry Pristis' advise on consolidation found in previous posts. I am leaving on a 2 week trip and will not have time to dry the specimen and complete the consolidation before the trip. So the question is, should I leave the tooth soaking until I return or remove the tooth from the water and allow it to dry for the 2 weeks in a controlled manner (In a ventilated aquarium resting on sand)?
  15. Does anyone create fossil prep videos/ tutorials. Or do you know of any videos worth a watch? Would be great to expand my knowledge and enjoyable to watch others work!
  16. I probably should have started this thread years ago but better late than never. Ive got a bunch of fossil fish im going to prep out this summer. Im going to start with a Priscara serata that my sons friend found just last week. This serata has another right on top of it but missing some of itself so its going by by. This fish is from the bottom cap of the 18 inch layer and is in some very dense and very hard rock. The stuff I really like!!! A lot harder to prep than the split fish but nicer fish to say the least. Much harder bone too and can stand up against even pure dolomite! My kinda stuff!!! So, here we go........ RB This is the way it came up from the slab lift. You can see the other fish that is on top. The bottom one is about a 9 incher. This is almost 5 hours of work. The tail fin is a really hard prep job to say the least!!! but lookin real good so far. Luckily there is a tad bit of matrix between the fishes!
  17. Jay's Prep Blog

    Okay, so everyone else is doing one it looks like, so I figured I would jump into the fray.
  18. Crab prep finished(for now)

    I recently finished this pulalius vulgaris and wanted to show it off. I may work on it more in the future when I get an air abrasive set up, but for now I'm pretty happy with it. It turned out well considering when I dug it out of the bank it rolled down the hill in two pieces. It was my first major repair and I have only prepped 7 or 8 of these. I think the practice is starting to pay off, but having a cooperative crab goes a long way. I know it's nowhere near the level of skill you see elsewhere on the forum, but I'm pretty dang proud of this one.
  19. Glue!

    What glue do you recommend for fixing broken fossils?. The one i currently use is called gorilla glue but i'd like a colourless one.
  20. Cephalopod Preparation

    Found this cephalopod at Caesar Creek a month ago, just now got the chance to clean it up now that school is done. It's about 4.5 inches long and 1.5 inches wide. My best guess at ID is Cameroceras but if anyone thinks it may be something else please let me know. Looking at about 450 million years old. Before After
  21. Bison Prep

    In tandem with the phytosaur prep, I’ve also started a very challenging bison skull project. This specimen is sub-fossil bone and VERY soft. The bone inside the foils wrapping is a crumbling mess. First step was to wrap it in towels and let it dry for a week.
  22. Ive been thinkin about gettin one of these for years! I finally broke down and bought one, with extra scope lights. Right now its sittin on the kitchen desk. Just gots to clean up my prep bench now. I also have to find my micro scribes. Bought em years ago, never used them. I wonder where they are? Once I do fine em, I will be ready to join the Big Boys Prep Club. Maybe they will make me presidnt of the club. If so I will make my club goal to have happy hour! Ha!!! I should be a shoe in! RB
  23. Kane's Bug Preps

    Back in January while I was working through my prep queue, I was working on some Penn Dixie material. As a lot of this stuff is easy for me to get and fairly common, I wanted to get a bit fancy with some prep. The goal was to make a sideways mounted pedestal, and eventually square the tiny block. This was how it looked originally:
  24. First air scribe

    Hello everyone I have decided to start prepping with some mechanic aid and was hoping for some advice. The compressor I have runs at 8 bar, 120l/min and has a 6l tank. The air scribe I am considering is from Krantz and has the following technical data: 36000 beats/min air consumption: 25–30 l/min pressure: 3–7 bar weight: 250 g size: Ø 17 x 160 mm length of the tube: ca. 2,5 m with internat. plug-in coupling pointer: acute, hard metal, medium, 38 mm My first question is if it looks like a good choice for a first scribe, any other alternatives anyone can suggest? My second question is if I need an external component to control the maksimum air pressure? On the compressor I can adjust the pressure range it runs on from x-8 bar, where x is the minimum pressure i allow it to go, before it brings it back up to 8 bar, but the scribe prescribe a 3-7 bar running pressure. Any spare parts worth getting straight off the bat? Best regards
  25. Okay so I have some questions on what you can and can't do with your typical trilobite in shale fossils. To help direct the discussion, I am interested in setting a small trilobite in silver as a gift. I make silver jewelry both using PMC (Precious Metal Clay) and traditional cutting and soldering. So, first question: Can you use high percentage (70% or higher) rubbing alcohol to clean all the dust and debris before sealing a trilobite? If not, what should I use? (I know you shouldn't use water) Question 2: What sealants can/should you use on a trilobite? I am looking for something that will be both waterproof and help prevent chipping. Question 3: Does anyone have any experience exposing them to high heat? It is common in jewelry making for heat to be involved, from both direct flame and indirect radiant heat. Is there any kind of precautions I should take and if so, what? What type of heat did you expose them to and what was the result? Different minerals act differently so remember we are talking about soft-medium shale. Question 4: Do you have any other advice or precautions you can give me regarding the use of fossil trilobites in/from shale matrix regarding their use in mixed media projects? The information I gather on this will help dictate my methods and help me create a plan for my project. There are many different ways I can do this and want to get a better idea of my options. Thanks. Picture is not of the exact trilobite to be used. It's just a reference for the kind of material/fossil I will be using.
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