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  1. Ceraurus

    Ceraurus globulatus and Trichopeltus

    From the album: Mark Bourrie trilobites

    Two different genus from the Ordovician (Kirkfieldian), Hastings County, Ontario, Canada
  2. Ceraurus

    Cyphoproetus wilsonae

    From the album: Mark Bourrie trilobites

    Cyphoproetus wilsonae, Ordovician (Kirkfieldian), Hastings County, Ontario, Canada
  3. Ceraurus

    Ceraurus and Starfish

    From the album: Mark Bourrie trilobites

    Ceraurus plattinensis, Ordovician (Kirfkfieldian), Hastings County, ON
  4. Ceraurus

    Bumastoides sp.

    From the album: Mark Bourrie trilobites

    Bumastoides sp., Ordovician (Kirfieldian), Renfrew County, Ontario, Canada.
  5. Ceraurus

    Complete crinoids with Gabriceraurus

    From the album: Mark Bourrie trilobites

    Gabriceraurus ventral on a plate of complete crinoids. Ordovician (Kirkfieldian), Victoria County, Ontario, Canada
  6. From the album: Mark Bourrie trilobites

    One Gabriceraurus has a healed injury, Ordovician (Kirkfieldian), Renfrew County, Ontario Canada
  7. Nautiloid

    Pseudodechenella rowi

    From the album: Nautiloid’s Trilobite Collection

    Although a little warped, this is still an awesome example of one of my favorite New York trilobites! This bug comes from the Middle Devonian Centerfield Limestone of Western New York, and was purchased from a good friend of mine.

    © Owen Yonkin 2022

  8. Nautiloid

    Bumastus ioxus

    From the album: Nautiloid’s Trilobite Collection

    Although the cephalon is slightly disarticulated, this is still a nice example of an iconic Rochester Shale trilobite. This bug was collected from Caleb Quarry in Middleport, NY, and was purchased from a good friend of mine.

    © Owen Yonkin 2022

  9. Nautiloid

    Cedaria minor

    From the album: Nautiloid’s Trilobite Collection

    This cute little bug is from the Middle Cambrian Weeks Formation of Millard County, Utah. Purchased from a good friend.

    © Owen Yonkin 2022

  10. Nautiloid

    Paratrinucleus acervulosus

    From the album: Nautiloid’s Trilobite Collection

    This nice little bug is from the Upper Ordovician Liberty Hall Shale of Virginia. It exhibits pretty good preservation considering its size. Purchased from a good friend.

    © Owen Yonkin 2022

  11. Nautiloid

    Lemureops kilbeyi

    From the album: Nautiloid’s Trilobite Collection

    This gorgeous little bug comes from the Lower Ordovician Fillmore Formation in the Southern House Range of Utah. Definitely one of the coolest bugs in my collection! This was purchased from a good friend of mine.

    © Owen Yonkin 2022

  12. Last weekend I had the opportunity to spend a few hours collecting in a quarry in northern Illinois that exposes most of the Galena Group (Late Ordovician). There was lots of fresh rock to hunt through, and it was a good and productive trip. As usual, lots of gastropod molds were found. Hormotoma sp. Liospira sp. Sinuites sp.
  13. I finished this prep of a trilo-cephalon a week ago. I kept forgetting to post it, but I finally remembered today. This is an Acaste zerinae cephalon. It is from Leighton Formation, pre usual. It is missing a small chip of the right eye - I unfortunately didn’t notice its absence till I returned home. It’s a shame, this guy would have been completely whole if I had found it. On the plus side, this guy’s a very nice color in the sun - a kind of bluish. The other trilo-bits - including another cephalon - all were a brownish color. Makes this one a bit more special. The
  14. This past weekend I had to cancel a collecting trip due to ominous weather, so I instead made an impromptu trip to northern Kentucky to do some Ordovician collecting for a couple days. I really love this area and would spend a week down there if I could. This trip I decided to focus on the Kope and Fairview formations, two of the older formations in the greater Cincinnati area. The first day was mostly driving and not much collecting due to rain. But I did briefly stop at a spot where I found a pocket of Ectenocrinus crinoids on my last trip. I checked to see if any more had weathe
  15. Top Trilo

    Two Trilobite Document Requests

    I was wondering if anyone knew where I could find a copy of either one of these documents. Hahn, G., Hahn, R. 1996 Die Trilobiten-Taxa des Karbons und Perms: 2. Brachymetopidae. [The Trilobite Taxa of the Carboniferous and Permian: 2. Brachymetopidae.] Courier Forschungsinstitut Senckenberg, 195:1-242 Hahn, G., Hahn, R., Müller, P. 2019 Catalogus Trilobitorum Figuris (Trilobites Carbonici et Permici, IX. Cystispininae, Globusiinae, Proetinae). [A Catalog of Trilobites with Figures (Trilobites Carboniferous and Permian, 9. Cystispininae, Globusiinae, Pro
  16. Exactly what the title says, I was wondering which trilobite genera survived into the Carboniferous period. There is this paper, Weller, J. Marvin. “Carboniferous Trilobite Genera.” however I haven't been able to find a free copy online and its 86 years old so a little outdated. . There is also this, https://www.trilobites.info/lasttrilos.htm, from Sam Gon's trilobite website which has all the Trilobite genera of the Permian but obviously doesn't include the ones that went extinct during the Carboniferous. I was going to just search for the time frame for each of the trilobite gen
  17. Granth

    Teeth, molars and trilobites

    Hello again. I have acquired some new specimens to expand my "collection" and I would like you to help me corroborate the identifications of these fossils. I have no idea what species the trilobite corresponds to, I only know that it is from Morocco. According to the seller, the tooth was collected north of Florida, in a Pleistocene stratum and corresponds to a Tapirus veroensis. Likewise, the "crocodile" tooth was collected in the Bone Valley Area, Florida, within the Pliocene substratum. The shark tooth was identified as belonging to "megalodon".
  18. Had a great time meeting with @Bguild today! Sporting official uniform naturally
  19. Scylla

    Fossil show trilobite #2

    Moroccan trilobite with no further info given. Fossil show find, looks real, but IDK?
  20. My wife and I traveled up to western upstate NY this past weekend for Penn Dixie's annual dig with the experts event. This was our first visit to the park and we were happy to finally use up the tickets we had originally purchased for the 2020 dig. The event was sold out both days and the staff seemed happy to be back in normal operations. The weather was perfect, with bright sunny skies and temps in the 50s to 60s day 1 and 60s to low 70s day 2. Lots of folks digging: We didn't find anything crazy good, but didn't get blanked with a mix o
  21. Hello! I have a Drotops armartus fossil and some of the spines are broken off which glue would work best? Thank all of you for any help!
  22. I collected this trilobite pygidium in the Galena Group (Upper Ordovician) of Illinois. I don't immediately recognize it, especially since it is just a mold. It is fairly large. My best guess is Isotelus but I was hoping one of the trilobite experts here might have a better idea. Thanks for any help.
  23. 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
  24. Hello everyone, I am currently staying at the Mountain Lake Biological Station in Giles County Virginia doing research on evolution (on living animals not fossils) and yesterday I decided to take a walk around mountain lake. This lake and the hotel next to it was actually the location that the movie Dirty Dancing was filmed in but due to natural geological processes the lake is now almost completely drained. This draining has revealed a lot of the sandstone and limestone that once made up the lake bed. I was not going here looking for fossils but when I sat down to rest I saw the Pygidium of a
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