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  1. Bonehunter

    Conodont help

    Hi all! Hope everyone is healthy and Covid free! Been focused on conodonts now and need help with these two- found in Stark shale member between Bethany Falls limestone and Winterset, if I have that correct :), Stark shale for sure though. The first is a beautiful cone I cleaned the base of. There are no additional denticle structures at the base and it doesn't look fractured at the base either. It is just under 1mm in length. I could also be totally wrong and its a fish tooth .The second is also a Stark shale element, but I'm not going to guess what element-it doesn't resemble the few pictures I can find of conodont elements. It is about 500um in length. Any help as to which elements these are, and at least a genus would be fabulously appreciated!!!!! Bone
  2. Bonehunter

    Unknown "toothed" microfossil

    So...while splitting my thousandths shale and looking under the scope, I came across this organism, which appears to have interdigitating teeth?. At least most look interdigitating as opposed? Or , I just dunno. There is also a surrounding imprint on both sides. It was found in Stark shale Kansas City Missouri and is nearly 2mm long. I have two views, and can get the other split side, but this is the best images so far.....ANY thoughts, would be appreciated!....In my very limited (one month :)) experience looking at conodonts, this doesn't appear to be one, (S elements?) but, I've been wrong so many times on other fossils,, this would be a breakthrough:)…. Thanks for looking! Bone
  3. KCMOfossil

    My Kansas City conodonts

    The past month or so I have had a chance to examine some shale from the Stark Shale, Dennis Formation, Kansas City Group. I have found many conodonts and I’ve enjoyed the challenge of taking pictures of them while they are still embedded in the shale. I think I have over 100 specimens now. Below I have posted some of my results. I have tried to identify the element position (P, S, or M) according to Purnell, Donoghue and Aldridge’s “Orientation and Anatomical Notation in Conoodonts,” Journal of Paleontology, 74(1), 2000, pp. 113-122, although I have not distinguished among the various S elements. In addition, I have attempted a bit of genus and species identification using Baesemann’s “Missouri (Upper Pennsylvanian) Conodonts of Northeastern Kansas,” Journal of Paleontology, 47(4), 689-710. I am just now beginning to experiment with dissolving the shale to extract the conodonts. I’ve had a some luck just using a 3% hydrogen peroxide solution from a local drug store. If I can figure this out, I should be able to get some pictures of extracted specimens. It has been fascinating and I’ve learned some interesting things. I have no training in biology or paleontology, and I am just a fossil hobbyist, so I expect that there are mistakes in my understanding of the terminology and in the ID of specific items. This is likely exacerbated by my superficial reading of the articles I mentioned above. So, feel free to correct me and I will be grateful. Just a few things about the pictures. The conodonts are in the 1-3 mm range. Second, the places where the conodont appears to be black are actually where the conodont is missing. Conodonts leave a detailed shiny mold if they are broken out or removed. Third, certain presentations are common others are less so. For example the P element seldom presents its dorsal view. Fourth, depth of field is a special problem for the P elements since they tend to bulge upward--and out of focus. I hope to continue to develop this post as my understanding grows and my specimens increase. I have numbered each picture by means of the comment above it. 1. S element
  4. KOI

    Filming Conodonts

    Hi! I recently acquired a bunch of microfossil samples for kids to play but did not expect them to be so small. We tried some microscopy but ended up applying a little trick that actually to helped to film them "in action", which was kind of cool. I do not know if this technique is a common knowledge or not but I decided to share. Perhaps, it will be of use to somebody. Here you go: Any suggestions for improvements? Thanks!
  5. Monica

    scolecodont or conodont?

    Hi again! Over the weekend, I posted pictures of small fossils in a rock I found at Mimico Creek in Toronto, Ontario (Georgian Bay Formation, Upper Ordovician). I've created this new post just for the shiny black specimens that I found in the rock because a consensus wasn't reached regarding their identity. Each of the two specimens pictured below are 5mm long. My question is: are these items scolecodonts or conodonts? I was leaning towards scolecodonts but I wanted to see what others have to say... Thanks once again! Monica
  6. Can someone help me identify the item that is with these two conodonts? My guess is a fish scale. This is from the Stark Shale, Dennis Formation, Kansas City Group. The conodonts are 2mm or so and the specimen is 7mm. I am intrigued by the surface of the "shell" which is a bit crab-like (I'm not saying I think it is crab, but that the item's shell has that kind of texture). I've included pictures of both the item and its external mold on the other half of the split shale. Let me know what you think. Russ
  7. Mediospirifer

    #01 Ozarkodina

    From the album: Conodonts

    This is the first conodont I ever found. Ozarkodina sp. Upper Devonian North Evans Limestone Genesee Formation I originally posted it in the "My First Conodont!" thread.
  8. Mediospirifer

    #04 Platform conodont

    From the album: Conodonts

    Unidentified platform-type conodont North Evans Limestone Genesee Formation Upper Devonian
  9. Mediospirifer

    #03 Partial conodont element

    From the album: Conodonts

    Unidentified conodont piece North Evans Limestone Genesee Formation Upper Devonian
  10. Mediospirifer

    02 Partial conodont

    From the album: Conodonts

    Unidentified conodont North Evans Limestone Genesee Formation Upper Devonian
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