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Found 17 results

  1. Many Newly Discovered Species Are Already Gone Scientists are uncovering previously unknown species preserved in museum and botanical garden collections, only to find that they no longer exist in the wild. Katarina Zimmer, Wired, June 10, 2023 Undark version of above article. The paywalled paper is: Solórzano-Kraemer, M.M., Kunz, R., Hammel, J.U., Peñalver, E., Delclòs, X. and Engel, M.S., 2022. Stingless bees (Hymenoptera: Apidae) in Holocene copal and Defaunation resin from Eastern Africa indicate Recent biodiversity change. The Holocene, 32(5), pp.414-432. PDF of preprint of Solórzano-Kraemer et al. (2022) Yours, Paul H.
  2. I have several thousand shark teeth of every shape and size that I found 25+ years ago that are in storage. If I can ever find them, I’d like to try and embed them in resin and make some kind of desk or coffee table piece, maybe even a river style coffee table with them embedded in the clear resin. For those that have tried it or may have suggestions, what is the best method of sealing the pores in fossils and pyrite to keep them from squeezing out air bubbles during the pressurizing process? I didn’t know if there was a special sealant that folks use. Thanks
  3. First up, I am not claiming that casts are of equal importance to the actual skeleton. I am annoyed however I come across arguments by anti-collectors that it is not feasible for museums to cast fossils in private collection. The recent rediscovery of the "Proteosaurus" casts should prove beyond any doubt that while a cast isn't on par with the original, they can still provide invaluable research data to paleontologists. https://royalsocietypublishing.org/doi/10.1098/rsos.220966 I hope that more paleontologists can consider partnering with private collectors and vice versa. I am sure the majority of private collectors would be happy to loan their fossils to museums
  4. Steph

    Paleozoic Finds

    Hello, I am hoping for some input regarding some recent rock finds in an area recently exposed after heavy rains & flooding. I will probably split them up over a couple of posts. Appreciate any help in understanding these rocks. Location: Vestavia Hills, AL Paleozoic (from Ordovician to Pennsylvanian) Rock 1: Object just left of center- Bivalve? Trilobite? Rock 1: dark areas are moss - creating a bit of an optical illusion in the photo. Rock 1: close up of area on top right of rock 1, Shiny brown with white outline with some type of inclusion. Rock 1: close up of brown shiny area with white outline on front side. Resin? Rock 2: Weathered Bivalve? Rock 2: Different viewRock 2Rock 2: Backside Rock 3: could this be part of a trilobite?Rock 3Rock 3Rock 1: sorry I can’t figure out how to move photo to the rest of the photo group
  5. From the album: Fossil Amber and Copal: Worldwide Localities

    6.4g specimen measuring 40x25x14mm (see related entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a slight layer of sandstone matrix, and the clarity is variable throughout the piece.

    © Kaegen Lau

  6. From the album: Fossil Amber and Copal: Worldwide Localities

    6.4g specimen measuring 40x25x14mm (see related entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a slight layer of sandstone matrix, and the clarity is variable throughout the piece.

    © Kaegen Lau

  7. From the album: Fossil Amber and Copal: Worldwide Localities

    10.0g specimen measuring 48x40x11mm (see associated entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a light layer of sandstone matrix.
  8. From the album: Fossil Amber and Copal: Worldwide Localities

    10.0g specimen measuring 48x40x11mm (see associated entry). This is incredibly-rare material, with next to no information available on it; this copal originates from sandstone deposits and can be found both in-situ and ex-situ. This particular specimen was recovered from a farmer's field in rural Costa Rica many years ago, and is part of a small lot of similar material; unfortunately, the specific location of the deposit this specimen came from is unknown. This material is noticeably harder than Colombian copal, but still reacts to acetone; the exterior of this piece has a light layer of sandstone matrix.
  9. From the album: Fossil Amber and Copal: Worldwide Localities

    This specimen weighs 36.0g and measures 65x40x25mm; several small fragments of plant material are contained within its translucent, reddish mass. Originating from the island of Java, this variety of copal is a fairly recent discovery; it is recovered from various soil levels, near to or on the surface of the rainforest floor. Rough specimens usually exhibit a thick, whitish exterior crust; Indonesian red copal is very soft, reacts readily with acetone, and can be scratched with a fingernail.
  10. Hi everyone, I am new to this forum and have been loving it. I found a very fragile ammolite preserved in mudstone (I believe) and I want to seal it to preserve it and prevent it from falling apart. What can I use? Can resin/epoxy be used?
  11. I’m a fisherman and I’ve just done a trip on a Beamer trawler. We were fishing 20 miles south of lizard point in Cornwall and caught this in one tow. The skipper and his father both said they’ve seen this before but it’s not common, neither knew what it is exactly. It was in one lump but my fellow crewmen hit it with a rail pin and it split. Can anyone tell me what it is? It’s very pretty and I can see loads of inclusions when I hold fragments up to the light. It also smells strongly of pine.
  12. Ok so I was thinking of using resin to coat a skull I have in my collection. Its rather pricey so I wanted to make sure I could protect it from any further damage. The skull appears to be coated with something already since I see a shiny texture in some areas, so should i bother using a resin on it as well ??
  13. I was encouraged to share this in the forum so here it goes. I was given a pile of "amber" and two pieces that may or may not (most likely not) have something inside. After the "amber" failed the saltwater float test it was proposed that I may have copal, NOT amber. I tried my best to take as clear of pictures as my camera phone would allow. The first piece supposedly it has a "bug or stick or something" inside. The copal, if it really is copal, does not appear very clear, even with a light source behind it. The second piece is a little more transparent when the light shines through with the exception of the mysterious dark object lurking on the middle. (queue the spooky music!) Personally I think that both of these may just be dirt that accumulated in a crack when the copal was forming a long ago but this has apparently been a topic of hot debate. So if ya'll got any opinions on the matter, I'd love to hear them...or if you don't want to share your opinions, just tell me that I've discovered some weird new sub-species of dinosaur and I'll be happy with that. lol
  14. ntrusc

    Ammonite table.

    From the album: Jurassic stuff uk

    A resin table made with British ammonites.
  15. What do you use to back thin fossils? I have some nice pieces preserved in shale which came up pretty thinly. I'd like to reinforce to make sure they dont break. Thanks Liam
  16. I am quite new to preparing and preserving fossils and am not very knowledgeable on resin coatings. I have been told that Poly Methyl Methacrylate has some similar properties to Paraloid and can be dissolved and used to coat fossils. Is there a reason it is not used for this purpose? Thank you very much for the info.
  17. Hello everyone. So I have a question about a piece of burmite amber in my collection that I am certain is authentic. It does not release a smell when heated...I've found that my darker colored specimens will release a stronger pine smell than the lighter colored ones, however. Why is this one not giving off any smell? I'm sure it's being heated to a temparure high enough to release the smell. It passed the saltwater test, distinguishes from copal with the acetone test, and has cracks and chips characteristic of amber. It has a rather large inclusion of half of some species of grasshopper. I've included pictures of it. Thank you for your help!
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