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  1. trilobites_are_awesome

    Pseudogygites latimarginatus.

    From the album: My trilobites

    Pseudogygites latimarginatus, upper Ordovician, Ontario. My great grandmother collected this trilobite while my grandfather went hunting.
  2. Mochaccino

    "Carpoid" from UK?

    Hello, I have this fossil from the Middle Ordovician Hope shales, Leigh, Shropshire, UK. It was labeled as a carpoid "Anfesta sp.". However I realize that it has complete bilateral symmetry and no plate-like structure, even for a carpoid. Besides, I googled "Anfesta" and that is a Ediacaran organism with triradial symmetry, so evidently incorrect. What could this be? I can't find anything like it online, but maybe a brachiopod internal mold?
  3. I found this fossil in southeastern Indiana. Does anyone know what it could be? I figure it's some kind of gastropod but I'm not sure what, I've never seen one like it before.
  4. Drewdigs

    Trilobite Eye?

    Found this in a layer of Ordovician sediment east of Salida, CO. The bizarre pattern of holes caught my eye. Is this possibly a fragment of a trilobite eye?
  5. Dean Ruocco

    Xylabion sp.

    From the album: Ordovician

    Brechin Ontario, Bobcaygeon Formation.
  6. Dean Ruocco

    Ceraurus pleurexanthemus

    From the album: Ordovician

    Walcott Rust Quarry..
  7. Dean Ruocco

    Isotelus gigas

    From the album: Ordovician

    Lafamilia Quarry Trenton Group Found spring 2023.
  8. Dean Ruocco

    Gravicalymene magnotuberculata

    From the album: Ordovician

    Lafamilia Quarry Trenton group. Found spring 2023.
  9. Dean Ruocco

    Pseudogygites

    From the album: Ordovician

    Pseudogygites from Ontario, Canada.
  10. Dean Ruocco

    Flexicalymene meeki

    From the album: Ordovician

    Mount orab, Ohio.
  11. Dean Ruocco

    Isotelus mafrizae

    From the album: Ordovician

    Brechen Ontario, Bobcaygeon Formation.
  12. Dean Ruocco

    Ceraurus plattinensis

    From the album: Ordovician

    Ceraurus plattinensis from Ontario, Canada.
  13. This looks similar to some jawless fish bone I’ve seen. Could this be some? Ordovician, Wisconsin, Dane county, Madison.
  14. Mastic

    Ordovician Limestone Structure

    I found this plate of Ordovician limestone in Prince Edward County, Ontario. It’s a relatively unremarkable specimen, bits of crinoid stems and brachiopod shells are scattered throughout, but it contains a prominent raised convex bar seen on the upper left of the specimen in the first image. My best guess is that it’s an ichnofacies of some kind, a burrow or trail left by something like a trilobite. I’ve included some close ups of the bar, there are small bits of shell where it comes to an end. Any help identifying it is greatly appreciated!
  15. Tetradium

    Cyrtoceras sp.

    From the album: Minnesota Ordovician Decorah Cephalopods

    Top view - Rare in Decorah Formation Twin Cities. Small size, the muddy limestone made it hard to tell what species it is.
  16. sarahbbgun

    Are these structures Stromatolites?

    I’ve been clearing out invasive vines from my neighborhood park/green space and came across these structures absolutely covered in fortunes spindle and green briar. I could see a little part poking out and wow I just had to uncover them. Could they be stromatolites? Or just layered ole weathered limestone boulders? My Google searches of stromatolites did turn up a few that resembled these structures. But only a few:) any thoughts are greatly welcomed!
  17. CrustaceousBaki

    Northern IL Mystery fossil

    Found in Kane County, IL. Never seen anything like it before around here, found buried in dirt near the fox river with few other pieces that had broken off.
  18. The_bro87

    Upstate NY Trilobites

    Hi! My friends and I are part of our Universities geology club and we were hoping to plan a spring break day trip to look for some trilobites. We go to Binghamton University in the southern Tier. I've been to the site in Tully NY behind the hotel and gas station and found some great partials (especially of greenops), but this time around we were hoping to find some more complete fossils. We've heard that there are some good places to look in Madison County, and also in Little Falls, but were hoping for advice on the best spots to look that are also public property to collect on. Sites closer to Binghamton would also be great, but I figured I'd ask about the one's we've heard of so far. A few of us have also been out o Buffalo to find fossils at places like Penn Dixie but the Buffalo region is probably too far for this trip. Any advice would be greatly appreciated, thank you! Here's a picture of my favorite trilobite find from Tully
  19. This specimen measures about 22.5cm in length and 14cm in width. I found it about 9 months ago on the riverbank along Joshua’s Creek in Oakville, near the tip of the Georgian Bay Formation that meets Lake Ontario. Been really busy the past few months, so haven’t had time to post it until now. Can anyone identify what Fossilized Bivalve species are present on the Rock?
  20. T. Roe

    What is it?

    okla fossil_files Ordovicican, Oklahoma
  21. I found this in Ohio Brush Creek thinking it was horn coral. Its not. Any ideas? Part of a syphuncle maybe?
  22. I recently collected from the Drakes formation on the west side of the Jessamine dome. I've been dissolving rocks, rinsing and then baking for about ten minutes in an old toaster oven. This is my outdoor laboratory. Here are some fossils. Thanks for looking.
  23. Hello everyone! Today I acquired a specimen that is of a rarity that's nearly unparalleled. The specimen in question is the cuticle of a Eurypterid from the famous, classic, and closed Ordovician locality at Swatara Gap. I believe it is undescribed and I can tell its a eurypterid for sure by the scaling pattern on the cuticle. Eurypterids aren't unheard of at Swatara Gap but I have never seen a specimen or even known about a specimen other then the one I have. They are extremely rare and were probably over looked by collectors due to not knowing what they were. I acquired the eurypterid from a close friend, Kerry Matt. Kerry collected it over 40 years ago, after a talking to him about it (he knows I'm obsessed with these things lol!) we worked out a trade!! The eurypterid itself is most likely closely related to the genera Echinognathus and Megalograptus. This specimen is just breath taking and so exciting to me. It might be my favorite specimen in my collection!!!
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