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Found 13 results

  1. 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.)
  2. 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 that I began to try the Pierre a little more and today, after finally getting landowner permission, I spent the day at a site with extensive exposures. Most of the Pierre Shale exposures in East-central North Dakota are of the DeGrey Member. The most obvious feature of this member is a large amount of iron manganese carbonate concretions. The few fossils I find in the Pierre here are usually in these worn concretions. The first fossils I found didn't come from the Pierre at all but came from glacial erratic limestone. I occasionally find older material like this among the tons of glacial material that blankets most of this part of the state but rarely do I find such well preserved/unworn specimens. Some nice brachiopods to start. I was happy to collect some of these among a split limestone boulder despite the lack of specific age/locality data. Moving towards the actual Pierre Shale deposits there is distinct worn shale with bands of worn concretions. The large tract of land I had permission to collect on was covered in these exposures.
  3. Inoceramus?

    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
  4. 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 formation. I took these home just in case it is identified as fossils later. I think it's fossil vegetation of some sort. Maybe reed or horsetail? I found these jumbled at different locations but put it together and it fitted like a puzzle. I took it home and will be prepped. This is from Dakota formation. Inoceramus from Greenhorn formation. One of the best specimen of this genus I have found so far! Took this one home. Another Inoceramus, pretty good specimen! I also took this one home. Tiny fossil in the center. Greenhorn formation again. This tiny fossil, image enlarged and the ridges/grooves are visible. No idea what it was. I took this one home and will be put under the microscope for identification efforts. The storm was brewing at the distance as the cold front is heading south. It was lightning and I was at near the top of hill, the road would be impassable if wet, so it was time for me to go home! I will be posting some of those fossils on the Fossils ID section soon after it is cleaned up. Cheers!
  5. Video does druzy no justice
  6. 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 believe lies underneath this member. In fact, if these are vertebrate fossils then they would be the first and only ones that I have found to date. Aside from vertebrate fossils, the only other thing that I thought that these could be were bits of the hinge of an Inoceramid oyster, which I have found. The last attached photo is of a hinge that I found recently only about 1 mile away from where I found this rock. However, there are a few problems with this theory, the first being the lack of any prismatic (calcitic) crystals being visible in any of the pieces, which there would be if these fossils really were cross section bits of an Inocermid hinge. The prismatic crystals are clearly visible in the cross section view of my Inoceramid hinge. Second, even if I am just not seeing the prismatic crystals, the piece pictured in F7 appears to me to be hollow with a thin, bony looking wall. It is this feature that first got me thinking that these could be bone bits from a pterosaur or a bird. The only thing that makes me rethink that theory is the fact that the larger piece pictured in F2-F3 is completely filled in on the inside and even has something sticking up in the center of it, pictured specifically in F3. But I also do not know for sure whether these two pieces are actually related at all. Compare my fossils with this TFF article about a possible pterosaur bone from the TXI quarry in Midlothian, Texas, which is in the Upper Turonian Atco Formation: And third, at the broken end of the piece pictured specifically in F5 and F6, I see what I perceive as stepped layers where some of it flaked off. That is good evidence against it being an Inoceramid hinge, because the prismatic crystals would be running parallel with an Inoceramid hinge's length, not running perpendicular to it. And as the steppes go down, it seems to show layers of more reddish material, which is also something that I have never seen from an inoceramid shell. There are four main pieces in this rock (which are presumably related) that I am inquiring about, which are pictured in F1-F9. But there are other pieces in this rock that might be related to them, pictured in F10-F12. I also have a few other pieces in this rock that I am pretty sure are not related to the others, pictured in F13 and F14 . F13 is something that I have seen before, but I still do not know what it is, and F14 looks kind of like the shell of a very small urchin, but I really have no idea. The rock its self is 16 cm long. The largest of the 4 main pieces is pictured in F2, F3 and F13 and is 14½ mm in diameter and has 5 mm of it visible above the rock, plus the part of it sticking up in the center. The second largest piece pictured in F4-F7 is 9 mm in diameter and 6 mm in length. The third largest piece pictured in F8 is 5 mm long. And the smallest piece which is right next to the second largest piece is pictured in F4, F9 and is 5 mm long. There are many bits and pieces in this rock that I just can't take pictures of because this post would be 45 pages long. If photos or information apart from what I have already given is needed then I would be happy to give it. I could be way out there and totally off, so I appreciate any help/correction that I get. I am more of an ammonite guy and I don't really know that much at all about vertebrates. Even if these are nothing, I will have learned something. F1 F2
  7. 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.
  8. South Texas Upper Cretaceous Inoceramus

    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 presence of Inoceramus. Can anybody confirm these are calcite fibers and whether they may indicate the presence of Inoceramus? A couple of samples of what I see at my dig site. An example of inoceramus with embedded calcite fibers I got from a Google search.
  9. 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. The bottom shells that are attached in colonies to Inoceramus clams are common North Texas fossils. The top shells are rarely preserved. Do you think my IDs are correct? Anyone have good pictures of the interior of the top shell of Pseudoperna congesta oysters (which would help with their ID)?
  10. Inoceramus Japonicus

    From the album Japanese fossil collection

    Himenoura formation, Upper cretaceous, Amakusa japan
  11. 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 formation * Himenoura formation Leaving home at 4 am, I arrived at 6 am just when the first lights hitted the sea. I searched for fossils for about 4 hours at the Himenoura formation near Ryugatake. The formation is made at this place of black shale and contains mainly ammonite (polyptychoceras), inoceramus, shark teeth and flying reptile teeth. The weather was good and I really enjoyed the time spend alone, just with my hammer and my chisel. I found some interesting fossil like a bunch of polyptychoceras, a squished gaudryceras (thanks to fossisle and fossilDAWG for helping me to ID it), an inoceramus and this... thing...don't know what it is, maybe it is not even a fossil. I hope you will enjoy the few picture I put and If you have any question do not hesitate. If yu have any idea concerning the mysterious thing, I am all ears too. Have a nice day, David.
  12. Platyceramus Or Inoceramus?

    Hi all, I found these recently along Colorado's front range in the Niobrara Fm, about 20 mins southwest of downtown Denver. I am familiar with inoceramus, but these pieces have ridges - something I didn't think inoceramus had. They also have a similar cross-sectional structure with aragonite as the inoceramus fossils I've found, which makes me think it's some other type of clam or bivalve, maybe platyceramus? The largest piece appears to have small attached bivalves. Thanks for your help!