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  1. Little slice of heaven near Fort Collins with some nice Inoceramus Clams. Usually try to not bust open big rocks like this and instead find ones that have already eroded out but this nodule had a crack running along really nice bivalve so I couldn't resist.
  2. rawfossils

    Strange Inoceramid

    Never seen anything like this so far. I know it's an Inoceramid from the shell structure but I've never seen one in this shape before. I know there's a lot of variety with this species but I have a lot of experience collecting bivalves and I've never seen one like this.
  3. I was really enjoying hiking around different spots in Boulder, Colorado and eventually I came across a beautiful outcrop of the Niobrara Formation. I thought it was so cool that there were shell imprints in the rock and nobody had ever taught me about the Geology of the area and it was really fascinating to see for myself that the whole area was once under the sea. I stumbled upon a massive Inoceramus and I knew I had to haul it home. Not bad at all for a first fossil hunt I don't think I ever found a Inoceramus as impressive as my first. Begginers luck.
  4. I've had some beautiful little hikes around a sandstone outcrop and I've stumbled upon some very decent bivalves
  5. rawfossils

    Massive Inoceramid Clam

    Inoceramus shells could grow up to almost 2 meters long but this is by far the biggest one I ever found. From Boulder, Colorado in the Pierre Shale
  6. Took a trip down to my childhood museam and found a little corner I missed back in the day with some beautiful ammonites and baculites
  7. I took a geology excursion a couple of weeks ago, and had the chance to explore the I-40 road cut through the Gallup Hogback east of Gallup, New Mexico. Rather to my surprise, I came across a nice oyster horizon within the Mancos Shale. I realize the preservation is sketchy enough to make precise identification difficult. I'm wondering if these might be "baby" Inoceramus. I'll try to post some better pictures of samples I brought home later. And, since I consider myself lucky if I even get the right phylum -- I suppose another possibility is ostracods.
  8. ThePhysicist

    Inoceramid in situ

    From the album: Austin Chalk

    Inoceramids were very large clams that are abundant in the chalk. Often you only find portions like this, with telltale calcite prisms (seen here as vertical lines) which composed their shells.
  9. Chronos

    Inoceramus or no?

    In my amateur collection there is such a run-in bivalve from the Picardy cretaceous deposits (France). It was identified primarily as Inoceramus concentricus. Is it correct?
  10. Thecosmilia Trichitoma

    Show us your Inoceramus!

    Inoceramus are one of the most widespread and commonly found Mesozoic marine bivalves, ranging from the Early Jurassic to the Late Cretaceous. They are found in deposits all over the world, and can be small, or huge. So show us your Inos! Here are two I have found. The first is a plate with two of them from Holzmaden, where they are extremely common. The second is a larger weathered one from a local State Park tide pool. ( Of course, I didn’t collect it.)
  11. A few weeks ago I had the opportunity to look for fossils among additional Pierre Shale outcrops in the Sheyenne River Valley. I didn't post anything about that trip as it came up a bit short and read like my last Pierre Shale trip with more partial specimens. Today I went back to the area to look again, and also made it to an outcrop of the Gregory Member. Low water levels made for a great collection from the Gregory. The DeGrey was rather typical. The side of one of the so-called "Indian Mounds" of the DeGrey member and a frog which was hanging out on the mound. This p
  12. I ran across a pile of dumped limestone on a vacant lot in Grand prairie Texas, know nothing about it but I'm relying on the limestone experts on here for help. Most of it was shattered or blank but found one large slab about 4 ft across that was intact but cracked with some large peices left. I pried it apart and gathered up ones that looked interesting, had fossils, and large enough to maybe be distinguish as part of something else. Showing the group front and back for context. First four pics of one rock, next four pics of one rock and most interesting one, front and back of next rock, then
  13. Thomas.Dodson

    North Dakota Pierre Shale Trip

    I have an ambivalent relationship with the Pierre Shale. I try and try to find good sites that produce fossils but the end result is usually a fossil-less site. For a long time I quit trying exposures of Pierre Shale even though it's the closest fossil bearing exposure to where I live. About a year ago I decided to try the Pierre Shale again because it was close and I was too tired to go elsewhere, like the Fox Hills Formation in Central ND. Mostly I found worn Inoceramus fragments but to my surprise I found a nicely preserved caudal vertebrae from a mosasaur among float material. Following th
  14. Today I had a good time with fossil hunting at the Dakota formation (early Cenomanian) sites and Greenhorn formation (Cenomanian-early Turonian) sites in Ellsworth county, Kansas. Typical view of the local countryside, but still beautiful! I keep finding these weird vertebrae-like rocks, clustered in this particular site and not other sites. I suspect it's not vertebrae but I still can't figure this out yet. These mysterious vertebrae-like rocks...reminds me of shark centrum and crinoid stems but I don't think it's them. This site is Dakota forma
  15. Leslielauren


    Hi I recently found this big intact fossil while hunting in North Central Kansas. It's about 18 inches long. It is covered in smaller shells and has one small whole in shell that you can see in pictures. Is this a giant clam? https://photos.app.goo.gl/MMEEuEbGHe4x9a1YA
  16. davidcpowers

    Inoceramus Clam

    Specimen was collected on Oct 13, 2018. The location is Cedar Creek. It is 7 miles south of Glendive. The area is Pierre Shale. The specimen was in a concretion.
  17. Video does druzy no justice
  18. I found this rock a few years ago and have been wondering about the fossils in it ever since. At first I thought that they where some kind of fish remains, but upon further inspection I am beginning to think that they may be bits of either pterosaur or bird bone. But I really don't know. This rock was found in North Texas in the Upper Coniacian stage of the Austin Chalk Formation. The member of this formation in which I found these fossils is extremely scarce in any vertebrate fossils, with most of the them coming from a more blue/gray toned member of the Austin Chalk which I be
  19. Tony G.

    Possible Inoceramus?

    I was wondering if someone familiar with Eagle Ford fossils from the Las Colinas, Texas area could identify this. I think it looks like Inoceramus, but am not sure. For size reference, the graph paper that it is sitting on is 1/4" grid.
  20. This is a layer of material that I believe are calcite fibers found in Eagle Pass, Texas in an Upper Cretaceous layer of mostly soft yellow-grey clay and shale. I have seen numerous fragment piles of this material and some very large stretches of it. The specimens are roughly 1.5 cm to 2 cm thick. At first, I thought these were asbestos fibers, but when I examined them, they weren't fine enough (and I've seen asbestos in the wild). I suppose I could examine the fibers under magnification and see if they are double-refracting to confirm. I believe, based on research, these may indicate the
  21. DPS Ammonite

    Texas North Sulphur River Lagerstätte

    I found these 2 types of near perfect bivalves in the North Sulphur River (Cretaceous Ozan or Wolf City Formations) a fraction of a km upstream from the highway 2675 bridge east of Ben Franklin, Texas. The first 2 photos might be Anomia argentaria (commonly known as jingle shells) preserved as original shiny silvery grey shells. They are about 2 cm wide. The second 2 photos are of 4 oysters. Note the top left one with both top and bottom shells that are attached to an Inoceramus clam. I think that these might be Pseudoperna congesta since they are found in colonies attached to Inoceramus clams
  22. Japan, country where every worker, known as " Salaryman" is a soldier working for the Japanese economic supremacy, is known for its sushi, technology, kimono, ammonite and never resting workers. But his week was quite an event as thanks to 3 national holiday, Japanese "salarymen" (white collar) were able to have some rest during 5 days (from saturday to wednesday). I took the opportunity to go on a fossil hunting trip on the 23rd September. My destination, Amakusa, is a string of island located in the Ariake sea known in Kyushu for its two upper cretaceous formation : * Goshoura formatio
  23. David in Japan

    Inoceramus Japonicus

    From the album: Japanese fossil collection

    Himenoura formation, Upper cretaceous, Amakusa japan
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