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  1. Brian James Maguire

    Crinoid stems

  2. Collector9658

    Undetermined crinoid calyx

    From the album: Mississippian fossils

    An intriguing crinoid calyx from the Chouteau Formation of central Missouri, likely Aacocrinus boonensis . I'll clean and ID this specimen properly later this year.
  3. A recent fossil exploration trip in North MIssissippi resulted in a new Mississippi Fossils YouTube "How to" playlist. I believe I found a horn coral (top) and a crinoid stalk piece (bottom). A small quartz rock is also pictured in the middle. I also think I spotted an embedded oyster shell. darrell barnes
  4. Collector9658

    Crinoid ID, Agaricocrinus pracursor?

    Today I went through some piles of weathering Fern Glen limestone I have outside, and I found the cutest little calyx. First thought was it was a chunk of stem, but after chipping it out of the rock that was definitely not the case. I compared it to some literature I had on hand, and believe it is small Agaricocrinus pracursor crinoid calyx. I Would like some second opinions. Unfortunately I don't have an air abbraider to clean this calyx further and it being so small as well as ironstained makes it tough to photograph well with my old phone, so I will add a couple more photos than usual. Thanks as always. -Jay
  5. Hi TFF. I hope you can help me with this mystery. I found this unusual fossil at a rock shop in Northern California for only $15, so I figured I would grab it for that price and figure out what it is later. How hard could it be? I had the label and everything. Well, now it is home in New York and I think the label must have gotten switched because it looks like a mispelling of a trilobite. The fossil gives off crinoid or rhinocarid/phyllocarid vibes, but I just can't tell. Any ideas?
  6. Found this in a cliff side in Colorado I am not sure but it looks like a mollusk or Crinoid bulb, DINOSAUR EGG!😆 Thanks!
  7. JamieLynn

    Crinoid NY Devonian

  8. JamieLynn

    Crinoid NY Devonian

  9. JamieLynn

    Crinoid NY Devonian

  10. JamieLynn

    Crinoid NY Devonian

  11. JamieLynn

    Crinoid NY Devonian

  12. JamieLynn

    Crinoid NY Devonian

  13. JamieLynn

    Crinoid NY Devonian

  14. JamieLynn

    Crinoid NY Devonian

  15. JamieLynn

    Crinoid NY Devonian

  16. JamieLynn

    Crinoid NY Devonian

  17. JamieLynn

    Crinoid NY Devonian

  18. JamieLynn

    Crinoid NY Devonian

  19. JamieLynn

    Crinoid NY Devonian

  20. C2fossils

    IMG_2600

    From the album: My best finds (so far)

    Crinoid in matrix
  21. In my Secret Santa gift last Christmas from @connorp I received (among other nice items) a very nice little hash plate from the Mifflin Member of the Platteville Formation (U/M Ordovician, Blackriverian, ~453 MY) from SW Wisconsin. The picture below is the plate as it was received and in my 12/20/22 post about getting it I said: “A great hash plate. I already see two or maybe three different trilobite types with a couple of them tantalizingly partially buried and an interesting gastropod that I am not familiar with. I think a little prep work will make this even more spectacular. As an added plus, it represents my first fossils from the state of Wisconsin.” I finally got around to doing the prep I talked about and spent a little time exposing some of the more prominent fossils and giving it a gentle going over with air abrasion to bring out some of the features. I think it looks even better than it already did and I was even more impressed with the wide variety of fossils on the small section of rock. Below is the cleaned up plate: Here is a collage of the plate just turned at different angles to the sunlight in case it helps to bring out any features: There are hundreds of fossil fragments on this one small piece of rock, but I want to highlight the top couple dozen specimens. With the help of some TFF members via previous posts and replies in a couple of ID threads I put out (thanks @Tidgy's Dad, @connorp, @piranha, @minnbuckeye and others), I have identified several trilobites, brachiopods, gastropods, ostracods, bryozoans, and a crinoid and want to show you this wonderful diversity in such a small space. If anyone sees changes to my ID's please feel free to chime in. Some will be very specific ID's and some will be a bit more general. The picture below is the key to where each of the numbered specimens is on the slab (see number in upper left of each specific picture). We will start with the trilobites. Although each is only a partial, there is enough present to get a pretty specific ID on most of them. All are new genera or species in my collection. Here are the brachiopods: Here are a couple of specimens of a really neat gastropod which was new to me. So often it seems Paleozoic gastropods are just internal molds or rather plain forms, but this first one is very nice. Here are a few bryozoans and one very small horn coral. There were several of these small corals, I'm not really sure of the ID, I didn't research them much yet. Just a couple of small crinoid columnals were found. And last but not least are the ostracods. I am used to small ostracods (which some of these are) but there is also this one form that is huge (by ostracod standards) coming in at about a centimeter long. At first I thought they were brachiopod fragments until I looked at them closer. These things are the size of a kidney bean! Note the scale difference between the Eoleperditia and all the others. Most of my ID's are questionable as I was using a reference that is for the immediately overlying Decorah Formation until I can find a listing for the Mifflin Member. OK that is everything for now. I hope you have enjoyed the wonderful diversity of this small slice in time. With a little more investigation, I may yet tease out a few more specimens worthy of an ID. Thanks for looking. Mike
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