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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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Found 22 results

  1. D.R. Johnson

    Fossil in slab?

    Hi. I work in a garden centre. We have spotted this on one of the slabs we sell and we were wondering if it was a fossil. If so, what is it?
  2. When faced with a radiodont appendage fossil; How does one effectively determine which slab contains the "part" or "counterpart" ? For reference, here's the holotype Pseudoangustidontus appendage. The first pic, Figure A, is apparently the positive(?) "part" of the fossil. Whilst the second pic, Figure C, is apparently the negative(?) "counterpart". Like it's easy to tell the difference between an impression/cast, or the actual fossilised remains for hard-bodied specimens like shells, exoskeletons and bone. But for some soft-bodied organisms, it's especially difficult when bot
  3. Some of you may have noticed my flat polished fossils and fossil rocks. A few of you have some of them in their hands, e.g. @ricardo, @taj, @Monica, @fifbrindacier, @marguy I lost access to the cutting, grinding and polishing facility recently. No great loss, but I still have some small specimens that I want to have polished. What to do? I tried a low-cost, low-effort approach, using things I already have. 1. Cutting: I tried to cut some small specimens with an angle grinder. Well, it worked, more or less. Not the best option, don´t to it. Better would be a tile sa
  4. Thomas.Dodson

    Sectioned and Polished Fossils

    I've never put much time into sectioned and polished fossils, usually just because I don't usually collect material that would look well cut over whole. While preparing a trilobite I collected in Illinois over the Summer and I was cutting sections off the matrix bottom so the matrix lay flat as a stand. To my surprise I ended up cutting thin sections through a Favosites coral that piqued my interest. Coincidentally, this was at the same time @FranzBernhard posted his thread demonstrating a low-cost approach to polishing and sectioning small carbonate rocks and fossils by hand. With such
  5. I’m laying these natural sandstone slabs today and there ment to have fossils in them there noticeable bits wondering if anyone could help tell me if they are and maybe what they are thanks in advance
  6. Bradley Flynn

    Mini slab with macro fossils, maybe?

    I have this little slap I polished a awhile ago, it has some really interesting critters on it. Even a micro jaw bone with teeth maybe? Has many interesting things on it, I have just taken pictures of a few. Green arrows point out the "jaw" and a few other things. The "jaw" is the biggest at a whopping 40mm.
  7. Hi All, I recently purchased this Glossopteris slab. It appears to be made up of multiple layers showing fragments of leaves Would any further prep reveal more detail or possibly entire leaves? Thanks
  8. KingSepron

    What is this a slab of? (Lulworth)

    Lulworth is a late Jurassic to Mid Cretaceous area.
  9. thisguysthelimit

    What kind of fish is this? Inherited

    Let me know if you need anything else to help. It's rad! This thing is soooo heavy!
  10. I framed a pair of rock slabs recently, using a technique suggested by a forum member. I've done this before, and it has always come out well. I used Neilsen Metal Sectional Mouldings for the frame. I got the pieces custom cut by a frame maker, and just had to screw them together and add the wire. This technique works for slabs are fairly square or rectangular. There is overhang on the frames with will let you fudge a bit unevenness, but there is a limit. Neither of these slabs were perfectly rectangular and they worked fine. I used the N117 size frame,
  11. autismoford

    mississippian fossilerous limestone

    Can anyone help me identify the vast array of specimens on this slab? I see some rugosa.
  12. Still_human

    Ichthyosaur stomach contents

    From the album: Marine reptiles and mammals

    Cross sections of the stomach, full of squid/cephalopod hooks and beaks, of an early Jurassic ichthyosaur (Stenopterygius quadriscissus). One slice has the animals ribs, the lighter tan objects, around the stomach, while the other is entirely of the stomach contents.
  13. Mattodon

    Fish Fossil

    It has been a while since I have been online. So this is one of those very unhelpful posts where I know very little about this fossil's origin. It was purchased in South Africa and the slab is very well preserved. I am hoping this is not a fabricated fossil because the detail is exquisite. This is also a chance to show off my new Nikon D810 camera. I will answer any questions to the best of my ability.
  14. I helped one of my friends make a hanger for his huge Ohio hash plate. I guestimate it weights 15 pounds. I learned this technique from Harry Pristis, and only slightly modified it from what he posted. I used two steel rods from Lowes, and two turnbuckles from Home Depot. The materials cost was about $10. I used a wire bending jig to create two W-shaped "hangers" as shown. This jig was one like this; costs about $5. I bent the end of the hangers over to hook onto the plate. I used two turnbuckles to attach the rods together- and
  15. MarielleK

    Interesting Looking Fish

    So this is my second fish post of the night. Just wanted to know what this guy was, and the time period it may have come from. Thank you!
  16. Harry Pristis pointed me to this method, so I thought I would show how it worked out. This only works with fossil that are fairly rectangular or square. A little deviation is okay, depending on what frame you choose. I used Nielsen sectional aluminum picture frames. https://www.nielsen-design.de/en-EN/products/frame-mouldings-aluminium/ They come in a wide variety of colors and styles. When I bought a frame, I told them the exact size of the slab, and they added a tiny bit when they cut it, so the slab would fit inside. So, check with the selle
  17. holdinghistory

    Help with a Crinoid slab

    I just got this slab in the mail today. Overall I am SUPER thrilled with it. It had been advertised as a pair of Crinoids on a slab, but it looks to me like there is a possible third Crinoid that might be even bigger than the other two still lurking in the matrix. There might even be a forth one, and it looks like some possible trilobites scattered throughout. I am newer to prep work (and fossils for that matter), but this looks like it has the makings of a really neat plate. My questions would be if you think I am right in my assessment of the plate, and also what steps for prep work. I am ge
  18. Minnesota Nice

    Which Fish?

    This was given to me as a gift many years ago. Its the only fossil I have that I didn't collect myself. I know nothing about it its age or where it was found, or if it is possibly a fake. If it is to stay in my collection, I want to have a good ID and if possible a fairly accurate location and strata.
  19. wrfisherman

    NSR160530 192

    From the album: North Sulphur River 160529

    An iron-replaced hash of bivalve and other broken shells.

    © Mitchell Moore

  20. Any ideas what animal? Appears to be bone. Found on beach on Manasota Key FL. Measures 3" wide by a tad over 2.5 wide, about 1/2" thick. Appears to have part of edge broken off in one area but then worn rounded as other edges. Also note 2 marks (indentions) Could these be bite marks? Could this be from a vertebra? Learning so much on TFF and enjoying so much!
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