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Found 6 results

  1. Hello! I am trying to clean this beautiful mosasaur pictured below, but I am really struggling with some old paleobond thats already been used on it. I have been somewhat successful with using a liberal amount of acetone on the bone, which I scrub in with a toothbrush. This has worked, but there are certain regions where the the glue was used on gypsum crystals and model clay, which has effectively cemented the bones of the lower jaw together. I've also been using a regular paleoarrow. My goal here is to get it as clean as possible, NOT to specifically separate the natural occlusion of the teeth. The plan is to display it at a museum (Also, any wild guesses as to the genus of this pretty lady? I was thinking latoplatecarpus)
  2. Hello everyone! I am new to the world of fossils and even more so to the preparation. Since I'm doing this by myself, I still don't know how to recognize each type of rock, so it makes it more difficult for me to figure out what type of motodo to use for preparation. In the pictures they look grey/greenish but in person they look whiter. Also, the cloth on the bottom is clear white while in the picture it looks blueish... So, let's take these 4 fossils as examples: 1)Is there a way to know if when preparing them I will find more parts of the fossil inside the rock or it is only the outer part that has that shape and inside both the fossil and the matrix are one single thing? 2) This other case is very similar to the previous one, so I think the answer would be the same. In any case, I would like to know how they would approach each case: 3) In this case, in my opinion, there is a belemnite on an ammonite that is covered by sediment. Anyway you can see a part of the ammonite where the sediment has been lost. Again, what do you think would look good to do to this one? 4) Finally we see an ammonite discovered on the surface of a rock. I don't know if there is almost anything to do in this one, but any suggestion will be good to take into account. Also, what are your thought on the Dremel 290? I cannot afford any better tool. What other tools would you recommend? Many thanks in advance to all who are interested. Greetings, Alfred
  3. Why doesn't anyone seem to prep the undersides of trilobites? We see innumerable examples of the "pretty" carapaces, but I should think the undersides would be at least as instructive.
  4. Rocks are handy for a campfire. A common use for stones in a campfire is to create a protective ring around the flame. This ring serves two purposes: Creates a barrier between the fire and the rest of the forest, keeping the rest of the woods safe. Creates a wind barrier that can help light the fire, especially in wet and windy conditions Whatever the reason, someone made a campfire at my fossil dig site, it's a small secluded beach along a river. A nice place to make a campfire. By the way, I noticed that a rock they used to make the protective ring around the flame, had very distinct and visible small white fossils on it. A small chuck of rock found in the ash contained even whiter fossils. I deduced that the bleaching of fossils is created by the heat of the fire. I started experimenting, I put a rock containing fossils in the oven and set the heat to maximum (don't laugh, this is a very serious experiment) after heating the fossil for a solid hour, nothing happened. For my second try, I used my barbecue (don't laugh), I think I can have a higher temperature with it, I cook the same fossil for an hour and I get the same result: nothing. I needed more heat, so for my third try I put the fossil not on the grill but directly on the burners, and hooray I got white crinoids and Sowerbyella that really stand out from the matrix. Does anyone know what is the chemical process that creates this amazing effect? I wonder if this is a good method to give a second life to dull, unappealing and scientifically unworthy fossils. The heating process helps to bring the fossils out of the matrix, making it visibly more interesting. What do you think? A dull and unattractive fossil I used for my test After high temperature heating
  5. I found this rock and I want to try and preserve it before all of the fossils fall out (it has numerous surface micro fossils in layers, ?mass mortality). It's in the shape of a triangular pyramid and fossil layers are prominent on the front and one side. I considered trying to exposing the fossils on the back but I think it may be better having a side I can pick it up by without losing fossils. Is there a best sealant/protector for this type of piece? TIA for your time and help.
  6. elcoincoin

    busy during lockdown

    Hi all, I ve kept busy during lockdown, prepping, iding, cataloging various stuff, some recently picked on the field, some picked like 15 years ago, some recently trade. So i think i would share the box that was out today waiting to be catalogued : from ordovican to burdigalian, with some jurassic, cretaceous aswell as some carbonifere ; some plant material, some ammonites, trilotibites, crabs, shark tooth and echinoids.....
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