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Found 8 results

  1. Glitterhorse

    What did I find?

    Hey everyone! I found this outside a small kettle hole on the east end of Long Island. Can someone tell me what I’m looking at? And because I’m hopeful for petrified wood, perhaps I can be shown what to look for and what to avoid. I have more photos, but I didn’t want to flood the site with my first post. Thank you!
  2. 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 millions of years old? Ripple Marks Mention of Fossilization
  3. Per Christian

    Feeding wear or erosion?

    So I've got this theropod indet tooth that's from the elrhaz formation, or so the seller claims anyway. The tip is missing and I'm wondering if it's due to feeding wear or erosion? The tooth seems to have been quite worn by the owner, the distal carinae is almost worn away, but i suspect it's also eroded some. The angle of the break makes me think it's feeding wear, but il not certain. Any help is appreciated! @Troodon @pachy-pleuro-whatnot-odon
  4. 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 spot (clif, badlands...) with a picture of the same spot over a period of time, to see how quick the environment can change the view of the landscape. I'm aware it's an unusual request, but this isn't something you can easily find on the internet. Hope I made some sense throughout this post. Thanks in advance.
  5. 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
  6. 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 Macrocephalites ammonites, but have been eroded away to such a point that the (usually invisible) septal chambers and walls can be seen right into the center.
  7. 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 it can kill you. Don’t stand near the foot of the Cliffs. Having seen a rockslide, I can tell you that there is no warning when the rock gives away, just the echo of tons of ancient ocean floor returning to sea level. It’s scary. Please be careful.
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