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  1. Greetings from a new forum member. I'm not sure whether this is even a fossil or something man-made. But I guess this is the place to find out. This was picked up on the banks of the Etobicoke Creek in suburban Toronto. The area contains a fair bit of rubble and landfill, so it's hard (for me) to say whether it's originally from the area. Thank you.
  2. Does anyone have experience with the Middle Ordovician brachiopod faunas of the upper Mississippi Valley? I came across this odd fragment in rocks from a quarry in south-central Wisconsin. To my knowledge they are known in North America only from the Appalachian Basin (Tennessee, Virginia, West Virginia, Pennsylvania, Quebec, Newfoundland), not the interior basins like the Illinois basin. Has anybody else seen this critter or similar in the Platteville? As far as I am aware, the only species documented from the Platteville that looks anything like this is Megamyonia unicostata, but that h
  3. ThePhysicist

    A Physicist's Collection

    While my prime focus is essentially learning how to accurately describe Nature in the precise language of mathematics, I've always been intrigued by natural history - it's actually what started me on the path to physics. The sort of interrogation that paleontology practices provoked me to think and question even further, down to the fundamental science which makes it all work. Collecting fossils has brought a large amount of enjoyment to my life, and is often a welcome distraction from what can sometimes be straining work. The knowledge that I accumulate along the way is also part
  4. mbarco

    Ordovician gastropod moulds?

    Upper ordovician, n-e Italy. I don't have the specimen (no scale bar was provided). In the ordovician couldn't be an Ammonoidea (and I don't think a coiled Nautiloidea). So I was thinking about Gastropoda. Fig.1 external mould. Central part removed. Fig.2 internal mould. Fig.3 external mould.
  5. Tetradium

    Glyptocrinus sp. ?

    Ordovician, Decorah Formation Minnesota Just want your opinions on it before I post it to my image gallery. I'm not a crinoid expert and this is rare - only my second crinoid from the Decorah Formation with more than 60% completeness. The first is a tiny one not even 2 inches from crown to base. This is more of a medium size with 110 mm from head to base. Using paint I pinpointed different areas for helpful info. #1 Is the arms - can't really see in picture but very clear to me some scavenger buried the arms - I could see a few faint tunnels a short distance away.
  6. Tetradium

    Vinlandostrophia amoena

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

    Largest of the two Vinlandostrophia species in Minnesota Decorah formation. Resembles Dinorthis pectinella strongly. Seem to be fragile as I couldn't find any whole specimens of this uncommon brachiopod.
  7. From the album: Fossil Art

    This picture was taken as is, it was not photoshopped, everything is real in the picture. Only the contrast has been adjusted a little bit. I took this picture at a small beach where the fossils are underwater, so I literarily fish for the fossils. You can read my two articles on the subject by clicking on the following links: The day I went fishing for fossils (part I) The day I went fishing for fossils (part II)
  8. Over the weekend I spent some time at the Burpee Museum of Natural History in Rockford, Illinois. My primary reason for visiting was to check out their local Ordovician fossils, but I was quite surprised by how large and comprehensive the museum was. Lots of great fossils and cool dioramas, definitely worth a visit if you're in the area. Diorama of the Ordovician sea Trilobites Crinoids and an edrioasteroid Cephalopods Bivalves and gastropods Receptaculitids
  9. BobWill

    Spiked Ordovician Arc fro OK

    One of the great things about hash plates is how much there is to see when you focus in close. I learned another great thing when I noticed a crack in this one from the marine, Viola formation of Pontotoc County Oklahoma. When I finally decided to bust it open it was like taking a whole new fossil hunt from the comfort of home. Most of it is the usual brachiopods and bryozoans but this caught my eye once I got a really close look. The scale is millimetres so this thing is tiny. I have no clue what it could be so help me out if you can.
  10. I don't know if this is the right place for this tread, as it's not really a trip, it's more like a few hours of outing. It won't call it hunting either, the fossils are underwater so it's more like fishing. Anyway, this is one of my many trips to this place, it's not very far, and it allows me to take a nature walk on weekends. Do not expect to see anything bigger than a few centimeters, this is the late Ordovician, historically the formation of rocks in the area is due to its immersion, towards the end of the Ordovician geological era, which led to the establishment of marine sed
  11. My first post was so popular that I decided to do a second. I went to the same place, and found more many rich and colorful fossils, and got enough material to write to you about it. For those who missed my first post, you will find it HERE As you will see in this article, I combine my two passions, collecting fossils and color photography. I love color, creating black and white photographs of fossils is good for scientific research, when you are a paleontologist and want to record the small details for science and posterity. But for people who are just starting to explore the wor
  12. Nautiloid

    Meadowtownella free cheek

    From the album: Nautiloid’s Trilobite Collection

    Meadowtownella trentonensis Middle Ordovician Trenton Group Glens Falls Formation In the vicinity of Plattsburgh, NY

    © Owen Yonkin 2021

  13. Nautiloid

    Partial Flexicalymene

    From the album: Nautiloid’s Trilobite Collection

    Flexicalymene senaria Middle Ordovician Trenton Group Jefferson County, NY

    © Owen Yonkin 2021

  14. Last month I took a weekend collecting trip down to the Cincinnati area as my last trip of the year. I visited a number of sites in Indiana and Kentucky, and as usual this included the famous Upper Ordovician roadcut near St. Leon, Indiana. Although this site is best known for its trilobites, I found a great crinoid on my last trip there, and had some further crinoid luck on this trip as well. I spent most of my time in and around the butter shale bed of the Liberty Formation, shown below. The find of the day came when I noticed a large accumulation of crinoid stem fra
  15. Nautiloid

    Partial Failleana indeterminata

    From the album: Nautiloid’s Trilobite Collection

    Failleana indeterminata Middle Ordovician Simcoe Group Verulam Formation James Dick Quarry Gamebridge, Ontario

    © Owen Yonkin 2021

  16. Nautiloid

    Ceraurus pleurexanthemus

    From the album: Nautiloid’s Trilobite Collection

    Ceraurus pleurexanthemus Middle Ordovician Trenton Group Rust Formation Walcott-Rust Beds Walcott-Rust Quarry Herkimer County, NY

    © Owen Yonkin 2021

  17. Nautiloid

    Thaleops americanus molted cephalon

    From the album: Nautiloid’s Trilobite Collection

    Thaleops americanus Middle Ordovician Trenton Group Jefferson County, NY

    © Owen Yonkin 2021

  18. Tetradium

    ?Petrocrania halli

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

    Acanthocrania setigera is described as only difference in having spinosa/pillose ornamentals on the outside which is a vague definition to me and is possible invalid name. So I'm just using Petrocrania halli for now. Occurs in mifflin section of Platteville Formation and Decorah Formation. Most common inarticulated brachiopod in Decorah formation.
  19. Tetradium

    Schizocrania sp.

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

    Rare Inarticulated brachiopod. Author claimed to only found one. Decorah Formation. Rounded with slightly raised edges. Unidentified bryozoan sp. can be seen on a single film covering part of the shell. Have parallel lines going from one end to another.
  20. From the album: Arthropods

    Flexicalymene ouzregui Anti-Atlas RegionTazzarine des Aït-Atta, arhbalt (Maïder)late Ordovician Ktaoua clay and sandstone group upper argillite formation,comon species but not comon shape :)
  21. Michelle Sawicki Library

    What makes these maze like patterns? Missouri Ordovician

    What makes the maze like pattern in the hole to the left of the white area? Any idea what that is and what made it? Michelle
  22. Hi Everyone, In the latter half of last month I took a two week trip to Kentucky and Tennessee. My sister, her husband, two of her adult children, and my parents all live in the Elizabethtown/Louisville area and I was able to spend some quality time with them. Fossil collecting was also part of my agenda. Herb, my primary fossil collecting partner in Kentucky and I had a three day trip down to Tennessee planned. Before I went on that expedition, I was out with my brother-in-law driving around central Kentucky. He dropped me off for 20 minutes at the Upper Mississippian site at Wax where
  23. Hi all, went on a fossil hunting trip recently and I found some things I'm unsure of. these were found off of Route 60 in the Reedsville formation. My best guess ( assuming this isn't concretion of course) was this may be some sort of horn coral. there was another splinter of rock that looks like it could be a cluster of brachiopods but what kind I have no idea.
  24. Denis Arcand

    Late Ordovician, Brachiopod and Bryozoan

    From the album: Hash Plates (Late Ordovician)

    I found this multicolor hash plate with many other in an Ordovician formation, see my post The day I went fishing for fossils. The picture was taken in full sunlight

    © Denis Arcand

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