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Found 131 results

  1. Can these 3 be ID’d?

    Tiny items, 1/2 - 1/4 inches, picked up in Big Brook that caught my attention and warranted being brought home. Teeth? Bivalves? Concretions? As always thank you for sharing your expertise
  2. Today I had the pleasure of attending I & M Canal Corridor Trip to collect on the "actual" Mazon Creek (River) in Morris, Illinois. I believe that this is the 11th year for this trip, which is held on Saturday and Sunday on a 400 acre farm that has access to the river. This is the first time that I have participated in this trip and thanks must go out to Rich @stats for letting me know about this trip last year. In January of this year Rich contacted me again to let me know that the sign-up for the trip was on line, so on 1-6-20 I sent my payment of $150.00 in and reserved my space. Some of you may question the $150.00 payment for this trip when you can collect out at the pits. First off, the money goes to support the I & M Canal and at the end of the day there are drinks, hors d'oeuvres and then dinner, which includes steak, chicken or pork chops, plus vegetables, corn on the cob and dessert. (Social Distancing was in place). We all met around 12:30 pm and the lecture started around 1:15 pm. The collecting started around 2:20 pm and we collected until 5 pm, which was plenty of time. When we arrived back we had dinner and sat around to talk until about 8 pm and then I headed out for the 1 hour drive home. Prior to the collecting portion, there is a nice informative talk given on the history of Mazon Creek fossils, what to look for and also some displays so the participants can visualize what they are looking for and what they might find. There were also a number of Fossil Forum members present and I will let Rich tag those members since I forgot their Forum names. I will start off with a few pictures of the pre-collecting time of trip. There were 3 dogs that were running around the property and I could not stop petting them. Some pics of us driving to the collecting site- The walkway to the river. Here are some pictures of the creek area. Continued on next post.
  3. Concretionary?

    From my previous trip to Ellsworth County, Kansas and it's located in Dakota formation, Cenomanian. It appeared as almost like vertebrae but I'm sure it's not verts. Is it by chance some form of ichnofossil? @jpc thinks it's concretionary. No disrespect to him, he's the only one who offered his opinion and I would like to know if anyone else have a different opinion.
  4. Yoshida, H., Ujihara, A., Minami, M., Asahara, Y., Katsuta, N., Yamamoto, K., Sirono, S.I., Maruyama, I., Nishimoto, S. and Metcalfe, R., 2015. Early post- mortem formation of carbonate concretions around tusk-shells over week-month timescales. Scientific reports, 5, no. 14123. Open access Nagoya University PDF link Researchgate PDF link More papers by Ippei Maruyama More papers by Hidekazu Yoshida Related papers are: Yoshida, H., Yamamoto, K., Minami, M., Katsuta, N., Sin-ichi, S. and Metcalfe, R., 2018. Generalized conditions of spherical carbonate concretion formation around decaying organic matter in early diagenesis. Scientific reports, 8(1), pp.1-10. Open access Another PDF link for paper Researchgate PDF link More papers by Hidekazu Yoshida Yoshida, H., Asahara, Y., Yamamoto, K., Katsuta, N., Minami, M. and Metcalfe, R., 2019. 87 Sr/86 Sr age determination by rapidly formed spherical carbonate concretions. Scientific reports, 9(1), pp.1-7. Open access Researchgate PDF link Publisher Correction More papers by Hidekazu Yoshida Yours, Paul H.
  5. Hello. I was just curious about what some good techniques for artificially weathering a concretion to get them open are? I've read that the best way to go is to soak, freeze, thaw, and repeat. But none of the sources I've read describes how long that takes. I'm sure it varies from specimen to specimen but is this process weeks, months or years? Does anyone have any other methods or resources about the process? I was thinking of giving it a try and could use some more information on the process. It seems kind of like the old geode gamble in a way. There's no way of knowing what's inside unless it's partially exposed already. I don't have a geologist's hammer and I think I'd feel bad if I cracked one by hitting it too hard or at the wrong angle. Are there any other tools that are recommended?
  6. Concretions or Eggs

    Hi All, I'm new to the forum and I have no paleontology experience other than a class from undergrad 20 something years ago. My background is structural geology, hence my post here in hopes that I may confirm my suspicion as to the genesis of the specimens in the attached pictures. First a little background: I was in the field yesterday doing some reconnaissance work in east-central Wyoming. The land owners whose property I was on are multi-generational ranchers and they were extremely welcoming and enthusiastic about the geology of the area, despite having limited knowledge. At the end of the day, standing in their yard saying thank you's and goodbye's one of the college-age sons came running up with 2 specimens of what I presume to be concretions. However, the texture was smoother than other concretions I have seen and there was a dimpled character to the extremity of both which I found odd. The kicker is that the southern end of their property has a full section of Jurassic Morrison Fm exposed. When I asked what the rock looked like in the area that he found them, his description matched what could be interpreted as the variegated sands and shales of the Morrison Fm. Of course, it could also describer some of the Miocene sediments unconformably overlying the Cloverly Fm in the area as well. Regarding the photographs attached: I did not take the specimens with me, only the photos attached with my phone in the land owner's front yard. Therefore I do not have scale other than to say the index finger of my left hand is 9.5 cm and my left thumb is 7 cm from tip to base knuckle. Any help would be greatly appreciated as I told the landowner's son I'd be happy to do a little research on his behalf. Much thanks in advance! -WyoOtto
  7. Anyone out there have any Tully Monsters they would be willing to trade. Partials ok. PM if you want.
  8. Good afternoon folks. I am wondering if anyone in our group has a "collection" of mislabeled concretions. If so, post them here it may help others identify some of their unknowns.
  9. CYLINDRICHNUS CONCENTRICUS TOOTS IN HOWARD, 1966(TRACE FOS SIL) IN ITS TYPE LOCALITY, UPPER CRETACEOUS, WYOMING Allan A. EKDALE & Sherie C. HARDING Annales Societatis Geologorum Poloniae (2015), vol. 85: 427–432. doi: http://dx.doi.org/10.14241/asgp.2015.018 asgpichnolspecissueekdalefestschri85_3_507_514 (2).pdf
  10. Mazon concretion IDs...

    Hey guys, I braved the creek yesterday on the first day of hunting season at Mazon. It was a thrilling first time getting to hunt there. These of the surface finds were pretty interesting looking and were among many duds, so I'm wondering if anyone has any ideas as to their classifications. The rest of the lot is in the freezer so look for my thread on that in a bit More concretions in the following posts: Thanks for looking!
  11. Colorado Fossils Show How Mammals Raced to Fill Dinosaurs’ Void An unusually rich trove found in Colorado reveals the world in which our mammalian forebears evolved into larger creatures. https://www.nytimes.com/2019/10/24/science/fossils-mammals-dinosaurs-colorado.html Fossil trove shows life's fast recovery after big extinction by Malcolm Ritter, PhysOrg. October 24, 2019 https://phys.org/news/2019-10-fossil-trove-life-fast-recovery.html Yours, Paul H.
  12. Crab 3.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    This is the only crab I have in the collection however small it may be
  13. Crab 2.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    This is the only crab I have in the collection however small it may be
  14. Crab 1.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    This is the only crab I have in the collection however small it may be
  15. Single Shell no Matrix 10.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  16. Single Shell no Matrix 9.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  17. Single Shell no Matrix 8.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  18. Single Shell no Matrix 7.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  19. Single Shell no Matrix 6.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  20. Single Shell no Matrix 5.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  21. Single Shell no Matrix 4.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  22. Single Shell no Matrix 3.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  23. Single Shell no Matrix 2.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  24. Single Shell no Matrix 1.JPG

    From the album 1925 Body & Trace Fossil Collection - Ocean

    These are the single shell, no matrix specimens. pic 1-4, I believe is the sand sediment taken from the location of these "Ocean Album" fossils. It was laying with the bone section of the collection, however none of the other bone in the collection have this appearance.
  25. From the album 1925 Body & Trace Fossil Collection - Ocean

    I combined the closeups to get a few more of the shells in the album
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