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  1. These came from the Silica Shale Formation near Sylvania Ohio, Middle Devonian. They seem far too small for the orthoconic cephalopods they resemble and I can see no evidence of septa or siphuncles on the ends. The scale is millimeters. This is the best image I can provide. The ratio of diameter to segment spacing ranges from 3:1 to 5.33:1.
  2. Crowdsourcing / help request! I'm putting together a review article for the fossil collector community on the Devonian rocks of the American midcontinent, which I've defined as the gray area on the map below plus southwest Ontario. I'm hoping to include a section in which I highlight the midcontinent fossils of greatest renown for each of a number of taxa (list below). (I purposely leave "renown" as a somewhat squishy quality open to multiple interpretations.) I would appreciate (1) your nominations of any midcontinent Devonian fossils of great renown that I have f
  3. Greetings. Came across this Dipnoan tooth, (and presumed armor plate) deep in a rock we were searching through. Just wondering about the prevalence of Devonian Dipnoan evidence in our area; especially the Dundee or close by formations.
  4. I_gotta_rock

    Hello from the Road

    There are road trips and then there are road trips. I've planned many a family vacation without a single mistake. Sometimes we hit a hitch if the plane gets rerouted due to weather or something. As much as I love Chicago, I avoid it not because strange things happen when we get too close. (I'm a little concerned about what tomorrow may bring as we pass close by.) But, it was never due to my poor planning. The last two weeks have been crazy! I had it all planned out around being in the Black Hills on Monday and Tuesday of this week. Five days out from approximately Philadelphia, f
  5. I picked this up thinking it looked vaguely like a fish scale, but I'm not entirely sure either way. Collected from the Cuyahoga Formation (Mississippian) in northern Ohio. Any thoughts?
  6. Hello, This one is new for me. Please help me out, but I'm thinking this is Coronura aspectans. This fragment is 1.6 cm wide, which suggest the animal was around 10 cm long. It is very smooth, but with a bit of eye strain and imagination? it looks like there are some small vestiges of nodes. Based on the possible species list, I don't see there is anything else that would come close to this, but I am new at this. Please give your thoughts.
  7. Hello all, it’s been a long time. I started getting back into fossil hunting now that I’ve gotten older. I had the chance to go out fossil hunting last month with my fossil club and a few friends. I’ll post the pictures over time of my finds. We went out to southern Ohio and southeastern Indiana. We stopped first at Caesar’s Creek. I had never been to any of these sites so it was very exciting. Everything at Caesar’s Creek is tiny, and you aren’t allowed to take anything larger than your palm/hand home with you. The most common find were absolutely tiny brachiopods which literally litt
  8. First time posting, i dug lurking for a while. Looking for some help to figure out what this is? Found in a region that could be Mississippi or PennSylvanian . Looks like some kind of segmented something or other, worm or something. but I don't know. Let me know if any of you are able to tell what this is! I tried to use light to enhance the detail from different angles.
  9. connorp

    A lucky Devonian find

    This past weekend I was able to hunt in the Middle Devonian Silica Shale in Ohio for a couple of hours. I found a lot of great things, but I think this took the cake for me. It was my first good find of the day, and the only specimen I've found in 5+ trips to this site. I don't have my Silica Shale book with me right now, but I believe it to be Hyperoblastus reimanni. In situ Cleaned up
  10. Hello. I am looking for some help identifying this fossil. Here are some pertinent details. Thanks in advance! Size.... It is about 42mm long by 21mm wide. It is a full fossil on the surface of a mostly spherical rock that is just slightly bigger than the fossil itself. Shape... Oblong. Oval. Color... The rock is a brown color. The fossil is white. The rock appears to have a lot of minerals in it. I can see glints of very small crystals throughout the fossil. Texture... Very rough. The organism appears to have had body segments. The deepest parts of the
  11. mmmbiker18

    Rock with many fossils

    Hello, I was recently searching for arrow heads in my creek that goes through my residence in Medina county Ohio. While searching I found a small multi colored brown, black, and red rock with many holes and patterns. I picked it up and on further inspection I found the rock was actually covered in hundreds of fossils! The rock has multiple holes as well. If anyone has an idea of what this would be called or identified as much appreciated!
  12. When you took your trip to st. Leon, we’re you nervous? I read that Indiana is lame and doesn’t allow collecting on their road cuts. I plan on making the 3-3.5 hour drive there but I’m so nervous I’m going to get in trouble and I don’t know where to park lol. I’ve read recent posts of people going in the past 6 months, and no complaints or issues. Or are there any sites to find trilobites in that area? It’s not a short drive lol
  13. Rosemaryeb

    Possible Fossil Ohio

    Unknown possible fossil found with Ohio glacier gravel. Can anyone tell me if this is a fossil/imprint or just a weird rock formation. The swirl goes up to the top, very strange! Thank you!
  14. Rosemaryeb

    Unknown Ohio Fossil

    Unknown fossil found in my driveway gravel in middle of Ohio. If anyone can help me identify it’d be much appreciated! This batch has had a LOT of crinoids if that helps!! Added penny for scale and if any other perspectives are needed just lmk!
  15. Last week took me back to my home state of Ohio in order to attend a conference. On the way home, I stopped at the Paulding Fossil Gardens to play in the Silica Shale for awhile before returning to the white landscape of Minnesota. There are a few unknowns that I ran across and am hoping for a little help! @Peat Burns These tiny squiggles are on top of a bryozoan covered brachiopod. The pores of the bryozoan can be seen. IDed as Microconchids. I thought this was a bryozoan until I looked at the enlarged picture. Now I feel it is crinoidal, but what?
  16. Oxytropidoceras

    Fishing for Dunkleosteus and more

    Wolf Run Preserve along the Vermilion River may well harbor fossils of the fearsome Dunkleosteus (photo gallery) Peter Krouse, ClevelandCom, February. 07, 2022 More about Dunkleosteus: A Devonian Fish Tale: A New Method of Body Length Estimation Suggests Much Smaller Sizes for Dunkleosteus terrelli (Placodermi: Arthrodira) Diversity 15(3):318, February 2023 Paleobiology of Dunkleosteus terrelli and Paleoecology of the Cleveland Shale Yours, Paul H.
  17. Hello everyone! I wanted to share a holy grail fossil that I have obtained: a partial skull of Dunkleosteus terrelli found in Cleveland Shale, Ohio This specimen has been confirmed by Zerina Johnson, a leading paleontologist at the Natural History Museum of UK as well as James Boyle who is a leading expert in the field and published academic research papers on Dunkleosteus and other placoderms of the Devonian period. Below is an excerpt from James Boyle on the Dunkleosteus partial skull specimen: "Yes, it's most like a Dunkleosteus based on what I ca
  18. I went to St Leon Indiana, and I had a pretty good haul!!! Spent the day out there I have several fossils that are from the Ordovician time period and they’re in limestone, limestone shale. Does anyone have any good tips on washing them? Do you prefer dry? Just with a brush? What about any rusted stuff, do you use oxalic oxide? What about algae? Do you prefer water? Soap and water? Hydrogen peroxide? I’m afraid and don’t want to ruin any. Thank you! Jessica
  19. Stevedebbie1226

    Fossilized Wood

    Hello all! I am new to this forum and felt I should repost my find here. A few days ago I saw this rock on the ground in our horse turn-out area. It certainly looks and feels like petrified wood, but I have never found any in Ohio before. I wondered if anyone else would know anything about petrified wood in northeast Ohio. Age of fossil? Type of tree? How common? Thanks for any input Steve
  20. lzbones

    Central Ohio Limestone?

    Hi! Thought I'd give this a shot: I found this piece as a kid, and have held on tight to it because it's always been my "cool rock I found all by myself". Decades later, my opinion hasn't changed. Found in a rural part southern-central Ohio. Decent weight for its size, would definitely hurt if someone threw it at ya. My only query is that I have no idea what it is, as a super amateur mineral collector/enthusiast. Some strangers on the internet have pointed to it being limestone, but no guesses on what's imprinted on it (if anything). Would love to hear some opinions, or just for so
  21. Saturn

    Possible Egg?

    I can’t stop thinking that this might be an egg of some kind. Brittle outer shell. Odd layers inside. Found in Ohio, USA. thanks for your time and skills, Saturn
  22. jakob13

    Dinosaur egg?

    Greetings! Specimen found in Coshocton county, Ohio on a steep bank about 3 feet deep in grey clay. Trying to figure out not only ID, but also era, as time-frames don't seem to fit. It's a somewhat mysterious find from this geographic location. What this appears to me to be is a dinosaur egg, halfed, with a pretty well formed embryo exposed. There is definitely an obvious shell around the rounded end of the half egg. I'm basically a complete beginner in the world of fossils. Thanks for your time.
  23. Hello all. I recently engaged in my first fossil hunting expedition at the Caesar Creek Spillway in the Cincinnati region of Ohio. While most of what I collected I was able to (probably) positively identify as various Ordovician fauna, one specimen has stumped my lay understanding. I believe it to be a partial fossil, about 2.5cm by 1cm, apparently ovular in cross-section with fairly clear segmentation. From some image comparison I've done I was initially leaning towards it being a partial Cephalopod, however what I'm interpreting as a waisted section at one end is throwing me off. I'm no
  24. Tidgy's Dad


    Hoooooooooooorrrrrrrrrrrraaaaaaayyyyyyyyyyy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here we are at last, into Adam's Silurian. Thanks for looking. First up is the Lower Silurian or Llandovery and I begin with a problem. I posted this one incorrectly in Adam's Ordovician as it had got it's label muddled up with an Ordovician Favosites I had that has vanished in the move here, but is being replaced by kind forum member @Herb Anyway, this, I remember now I've found the correct label, is from the greenish Browgill Formation, part of the Stockdale Group from a cutting near Skelg
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