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  1. dbrake40

    Little Tea Pot Short and Stout

    Thoughts on this stout metacarpal? Southern Minnesota gravel/river find. I only ask because farmers have run their cattle on the river in this area since I was a young man. This looks like bison to me though based on the proximal end and how stout it is.
  2. connorp

    Ordovician Unknown - Echinoderm?

    This specimen was found in the Maquoketa Formation (Upper Ordovician) of Minnesota. My best guess is part of an echinoderm (crinoid or cystoid calyx?) but I'm not sure, I've never found anything similar. Any thoughts?
  3. Tetradium

    100_9380

    From the album: Minnesota Ordovician Decorah Cephalopods

    A large Endoceras proteiforme. From Decorah shale. Only a little section of the shell remains on the lower half. The segmented part are septum and the smooth part are siphuncle.
  4. MarcoSr

    Stromatolites

    Two highly polished, end cut Stromatolite agate achats from the Mátra mountains, Gyöngyöstarján, Hungary from the Miocene, 20 million years ago that I recently purchased. These are the first Stromatolite fossils that I’ve added to my fossil collection. I’m posting a few pictures to show the incredible colors in these pieces. End Cut (1) ( 543grams 103mm by 102mm by 35mm) End Cut 2 (166grams 75mm by 45mm by 45mm)
  5. Found this morel hunting in an area that floods and with the lack of rain in Minnesota I was able to access this area. I was thinking it is some kind of petrified egg? It was in central Minnesota. It is heavy as a rock and as hard as one. I am sorry for the pictures, I will post more detailed pictures as soon as I have access to a camera. For now though the only thing I can say is my ring is exactly 1" in diameter. Thanks everybody
  6. Hello! I went fossil hunting with my brother and found a tooth shaped cone! We live in rock county of Luverne Minnesota, about 30 minutes away from Sioux Falls South Dakota. We went to a local river nearby that has a sandy riverbank with lots of different kinds of rocks. We have found a lot of small fossils of shells and some coral-like shapes. I found it near the water where it likely washed up. I assumed it was maybe a coral piece because I don’t know anything about teeth. But Google shows a lot of similar images from both teeth and some coral. I’m just not sure how to go about narrowing dow
  7. Tetradium

    100_9261

    From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota

    Strophomena septata - found this spring, much better specimens than previous ones. You can see the strong septae running down the middle along with strong muscle ridges which makes it different from other brachiopods. Also smaller too and finer ridges. Hmmmm. I might will have to recheck some Rafinesquina specimens in the future.
  8. Tetradium

    100_9259

    From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota

    Furcitella scofieldi - I mistake took pictures of it and mislabeled it as S. septae. Much more flatter than Oepikina inquassa for its muscle scars side. Have low medium septum divide into two check. You can see in the middle of the brachiopod three dark lines - they are raised by compare to surrounding shell.
  9. Tetradium

    100_9254

    From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota

    Oepikina inquassa - While sorting through this spring collection of brachiopods this one stood out. It came from the soft shale so was mostly intact instead of embedded into limestone which makes seeing underside difficult if not impossible. From the documentary: Oepikina inquassa is larger than Oepikina minnesotensis and is less convex. No muscle scar ridges check. Strong medium septum omits S. billingi check. Fine ridges you can see by all that iron particles/clay sticking to it check. Is more delicate than I thought plus this one have a weird quirk - two strong ridges can be seen running do
  10. April 10, 2021 1-4 pm Spring Valley, Minnesota Eagle Bluff Environmental Education Center organized hunt Led by Bev Sandlin, Bluffcountryfossils.net Whispering Winds, Spring Valley, MN Galena Formation Ordovician fossils What FUN!!! And what Great Finds! This hunt was organized by Eagle Bluff Environmental Education Center in Lanesboro, MN. I am doing hunts for them every 2nd Saturday of the month through this season and any private hunts they book as well. We had about 20 participants and it was a whirlwind hunt they all were enjoying as I left them still hunti
  11. angeb20

    ID help please...

    Found this on our small kettle lake shore in southern Minnesota. We occasionally find sea life fossils here, but this is a first for us. Can someone identify? Thank you.
  12. Tetradium

    20210505_1940_026_0.000

    From the album: Bryozoan of Minnesota Ordovician

    Here is the third picture of unknown bryozoan species.
  13. Tetradium

    20210505_1940_028_0.000

    From the album: Bryozoan of Minnesota Ordovician

    More close up of unknown Decorah formation bryozoan. You can see the much thicker wall clusters together.
  14. Tetradium

    20210505_1941_029_0.000

    From the album: Bryozoan of Minnesota Ordovician

    Close up of the unknown species showing varying walls thicknesses
  15. Tetradium

    100_9247

    From the album: Bryozoan of Minnesota Ordovician

    Batostoma species from Mifflin portion of Platteville Formation. Since there hadn't been any official researches into platteville bryozoan, I would assume this to be a early forerunner of Batostoma fertile as it looks very similar to it but on average smaller. One rock have a different species running parallel but camera couldn't get more details.
  16. Tetradium

    100_9245

    From the album: Bryozoan of Minnesota Ordovician

    Unnamed species. I keep getting in over my head with all the vocabulary so most likely not new. I only found this species this year in a new Decorah dig site location. I would had almost tossed it aside if not for the first piece I found which is much longer than the usual rugose decorah twin cities Ordovician bryozoans. On closer inspects it is so different from my Batostoma species. Rarely branching which is very unusual for a rugose bryozoan, very variable wall thickness as seen as under digital microscope. Only found in this one location.
  17. Tetradium

    100_9198

    From the album: Ichnofossils of Platteville to Decorah Formation Twin Cities

    One of the largest most complete Rauffella palmipes feeder burrow fill I have ever found. I hadn't heard of any other trace fossils yet that comes close to this weird one. The invertebrate animal that leaves them makes overlapping spoon shaped burrows with one entry hole.
  18. Tetradium

    100_9233

    From the album: Bryozoan of Minnesota Ordovician

    Stictoporella frondifera. Very localized abundant in lower Decorah formation Minnesota, Ordovician, Twin Cities.
  19. Tetradium

    100_9227

    From the album: Bryozoan of Minnesota Ordovician

    "Batostoma minnesotense" Decorah shale Twin Cities Ordovician. I couldn't tell any difference under digital microscope or by eye examination so any similar species are lumped by me under it. Very abundant in Decorah Shale. Only difference between this and Batostoma fertile is by compare of side by side specimens. Batostoma fertile have larger zoarium that is noticeable with the naked eye.
  20. Tetradium

    20210421_0608_014_0.000

    From the album: Bryozoan of Minnesota Ordovician

    The best I could do with digital microscope of close up of Batostoma fertile specimen.
  21. Tetradium

    100_9225

    From the album: Bryozoan of Minnesota Ordovician

    Compare of two Batostoma species from the same Decorah formation. They both overlaps in shape, size, and are among the largest branching bryozoan in Decorah Formation. The left three are Batostoma fertile and the right 3 are Batostoma minnesotense.
  22. Tetradium

    100_9224

    From the album: Bryozoan of Minnesota Ordovician

    Batostoma fragile Decorah Shale Ordovician Twin Cities Minnesota. When comparing all bryozoan fossils from Ordovician this one stands out as having the largest zoarium. (fossil terms for the pores). Its also the largest branching bryozoan I had found in terms of masses. One thing I have noticed with this is compare to "Batostoma minnesotense" It tend to be ,more lumpy and more flexible into forms, even at times mistook for Prasopora conoidea if not for its larger zoariums.
  23. Hi everyone, I just wanted to let you know that I spoke with the St. Paul Parks and Rec office today, and the Lilydale Regional Park has been completely closed off to fossil hunting, and fossil hunting permits "for the foreseeable future..." It isn't COVID related, but apparently the area has become increasingly unstable and has been closed off due to safety concerns. Unfortunately, one of the best places in MN has been closed and we all should help one another out to find new locations close to the cities to fossil hunt. This is truly some sad news...
  24. Tetradium

    20210323_1107_001_0.000

    From the album: Trilobites of Minnesota Decorah/Platteville/Galena Formation

    This is my first digital microscope picture submitted to this website. I tried it on bryozoan but couldn't see any significant differences. Part of Amphilichas cephalon close up. It was suitable because of its tiny size but was too big to get a full screen. Note the bumps on the eyes.
  25. Tetradium

    100_9177

    From the album: Trilobites of Minnesota Decorah/Platteville/Galena Formation

    Ceraurid hypostome. Platteville Formation (SW corner specimen) and rest are Decorah Formation. For a long time I thought it was little rolled up trilobites, that's how much the hypostome look like. Tiny .5 cm for Decorah ones and .6 cm for platteville ones. Decorah ones seem to be uncommon to common and very easily overlooked because of its tiny size. Heck I wonder how many had I overlooked over 5 years.
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