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Found 8 results

  1. Hello all I have an unusual request for you all. I would like to see the results of prolonged weathering of in-situ fossils. So I was wondering if someone here has ever seen a fossil in-situ they didn't think was possible to extract, and a fossil of the same, or similar piece worn away sometime later. Ideally with an estimated time for the fossil to wear down. The turtles of the White River formation are the first thing that come to mind about this, but trackways should be possible too. The more impressive the fossils is, the better. Additionally, a picture of a specific natural spo
  2. thinmint23

    Coral or Erosion

    Hi everyone. I found this piece of Missouri chert in a creek bed, but I am not sure if it is coral or just erosion. I have seen other pictures of coral that look similar to this, but I do not see any biological pattern or clues that this was once alive like you can see in something like a crinoid. Any help or tips would be appreciated
  3. A couple of weeks ago I posted here about the working of chemical erosion on some ammonites which I had found in a furrow between 2 fields. I went back there again this week and continued along, pulling out a few more. The furrow dipped down a bit into a sort of hollow where it became obvious that the water had collected there more profusely than above over the years and the finds became more and more eroded until it reached the point where the digging was hardly worth it any more. There were however a couple of quite interesting finds which I'd like to post here. They derive from Macrocephali
  4. Fossils are nature’s memento mori; blunt reminders that everything dies and has been doing so since the dawn of life on our ancient planet. To me, that’s a comfort, and something I think about a lot when I’m on a hunt. But today I came about fifty feet (or one brief pause to bend down to pick up a specimen) from being crushed by a rockslide near Roosevelt Cliffs at Calvert. So I’m not going to share what I found there today. No stupid shark tooth is cool enough to die for. I just wanted to reiterate here that Calvert is a living (or dying) geological feature and that i
  5. I’m very curious about these “ripple marks” that I have seen posted a few times on the forum. From what little research I have been able to do (so far...) they seem to be caused by wind or water erosion of the rock. However, there is mention of them possibly being fossilized rippled sediment from the floor of a body of water. So... are these geological erosions or some type of fossilized evidence of water movement? I can see how the erosion would work, but wouldn’t the sediment be compressed during lithification/fossilization and destroy the details if it was from a body of water
  6. Bullsnake

    Fossils on a Pedestal

    There is a small road cut exposure I like to frequent in the Plattsburg fm. where the Hickory Creek shale is excavated at a relatively shallow angle. The whole formation it extremely fossiliferous, but specimens with great preservation require diligent and persistent searching. But, to the subject of this post, an interesting means of finding those great fossils is in timing a good rain with a day or two of drying and wind erosion. The shale is very loose and it seems that what happens is fossils (and of course 'just rocks') of certain weights and sizes hold their ground while t
  7. While looking on Pleecan's Ediacaran Facebook group, I saw a post about a fossil-surface in Newfoundland, Canada that is now lost to coastal erosion. I've heard of other sites like this that will be and have been lost to erosion or construction because they can't be removed for one reason or another. I think it should be possible to 'rescue' these fossils surfaces by recording as much data from them as possible including making molds of them and then casting a replica of the surface for display and study. Does anyone know of any existing projects like this?
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