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Found 543 results

  1. Today turned out to be a good day to go through Linton Cannel Coal. I haven't searched the fossil coal in a while. Just for fun, I was looking through some blocks when I spotted a shark spine buried in a thin layer of spore cannel. Usually when I split the coal, I use a knife, but this piece was so thin and fragile I decided to blow of the layer with an air nozzle. When I did this, not only did I see a spine, but nearly a complete Shark was there. Typically the size of the coal block limits the fossil size. Today's fossil Orthacanthus compressus was missing the head and the tip of the tail. Sigh. This shark is from a coal mine in SE Ohio. The coal is Upper Pennsylvanian in age (300 myo). I have included a sketch of what an Orthacanthus may have looked like.
  2. Pennsylvanian Shark Tooth

    Anyone know what this Pennsylvanian (Desmoinian) shark tooth from Arizona is? The tooth is 40mm wide and 30mm from top of tooth to bottom of preserved root. The shape of the tooth suggests that it was a shell crusher. Thanks, John
  3. Pennsylvanian footprint

    I bought this fossil the other day, a Pennsylvanian amphibian or reptile print from Alabama (Carbon Hill). I have a fern fossil from the same site. I'm going to try and mount it to my wall if possible. Maybe put a wood backing with silicone glue, as it is fairly thin.
  4. Pennsylvanian Nodules

    We went up to Terre Haute, IN for a wedding this past weekend. I was looking forward to us being able to actually hunt for some fossils of our own as I had read online about Fowler Park/Griffin Bike Park and its nodules. I decided to check out the park rules after we got up there and lo and behold, Vigo County doesn't allow fossil collecting. I didn't want to set a bad example for my daughter so we refrained, much to our dismay. On the way home we stopped at an antique mall and happened to find someone selling jars of split nodules! So, we didn't come home empty-handed after all. Below are the better pieces that were in our jar. I used this guide and decided we had some pecopteris and macroneuropteris, but I'm not sure what all of them are, especially the blobby thing on the upper right. See detail photos of blob.
  5. Schnebly Hill Fm. plants

    What are the plants in the photos from the Pennsylvania/Permian boundry from the Schnebly Hill Formation near Payson, Arizona that I am linking to my Arizona Paleontology Guide? Photos are from geology teacher Stan Celestian and were not found by me. (I'm going to look at the location for plants). Thanks, John 1 Annularia? 2 Fern type? 3 Fern type?
  6. Possible fossil ~ any ideas?

    Hello everyone! I hope the summer is treating everyone well. Here in Chicago it has been either great storms or brutal heat. I have had very little time or ability to get out but last week the weather evened out I got to do some exploring. I always head to areas where water has flooded and uncovered fresh places to look. Last week I found the item pictured below just siting on the surface. The shape caught my eye and it made me think of a nautilus-type shell. The ridges follow all around the surface of the "shell." This was found on the DuPage river about 25 miles West of Chicago. We are just in the edge of the Slurian area but just east of the Pennsylvanian region. When consulting online guides for Illinois, this looks like an incomplete endolobus shell. Any ideas? Thank you for your time and help!
  7. what is it?

    i found this eroded out of the limestone bluffs, at first i thought crinoid but i dont see any form of symmetry or hole in the disk. is it something else? maybe a vertebrae? its about as big around as a dime and a few inches long
  8. Question about Mineral Wells

    What is the consensus on the name of the formation exposed at Mineral Wells Fossil Park? I've seen both Keechi Creek Shale of the Mineral Wells Formation, Strawn Group, Missouri Series (Pennsylvanian Period) and I've seen Salesville Shale, Desmoinesian. Does anyone have a citation for a peer-reviewed paper that provides empirical data supporting the formation name given and correlating it with other exposures?
  9. Pennsylvanian fish tooth?

    I have bulk sampled many times at the Lost Creek Reservoir in Jacksboro, TX, which is Pennsylvanian material. After dissolving a rock from the Jacksboro Limestone, I found what looks like a fish tooth that is 1.1mm long. In fact, it closely resembles some of the palaeoniscoid fish teeth that I have found in the Permian. Since it is the only one that I have ever found at Jacksboro, there is a chance that it could have somehow been transferred there. Or, although I try to thoroughly clean my screens after each use, I guess there is the chance of cross contamination. I have used those screens to sort through Permian material recently. My question is, has anyone ever found a fish tooth at Jacksboro? If so, does it look like the attached picture? Thanks for any help.
  10. Squashed Mazon Creek Crustacean?

    This is another piece from the Mazon Creek Chowder Flats site, it was shattered into quite a few pieces, but I was able to reassemble it. However, I can't tell what it is. I am certain it is some kind of crustacean, based on the texture and color of the shell and the presence of a long segmented antenna. But it seems to be rather flattened, and I can't make out many other details. There does appear to a segmented piece extending from the top edge of the blob to the edge of the nodule, but I can't make out any clear segments or limbs. The shape is reminiscent of Mamayocaris, perhaps just a poorly preserved one? The only other Essex Fauna crustacean that seems to roughly match the squat shape is the rare Dithyrocaris.
  11. sponge reference

    Does anyone have access to this reference to help me ID Arizona Pennsylvanian sponges. Please PM me. Wewokella and other sponges from the Pennsylvanian Minturn Formation of north-central Colorado JK Rigby, SB Church Journal of Paleontology 67 (6), 909-916 Thanks, John
  12. Over the winter I was freezing and thawing nodules found in reclaimed coal mine spoils from the Pennsylvanian Shelburn Formation, Busseron Sandstone from Vigo County Indiana. These contain flora and rare fauna similar to the Braidwood Biota from Mazon Creek. This nodule split off a tiny bit on one end and I set aside for further investigation after a quick glance revealed an interesting pattern. Then I forgot about until I was recently unpacking from a move, and re-examined it under magnification. Unfortunately, the piece that split off the end was lost, so I only have the one side, but it shows a small rectangular patch of texture, about 10 mm wide. The piece preserved shows folds and wrinkles, as well as what looks like a tear in the center, and looking under magnification reveals the entire piece is covered with tiny pebbly bumps. My first assumption would be plant material, but it doesn't match the texture of any of the other plants I have found at this site. A much less likely option would be a patch of skin from some sort of animal or egg casing. I would like to get it under greater magnification and will try to find an expert to look at it, but I wanted to put the best pictures I was able to take here for y'all's thoughts. Thanks!
  13. A Strange Rhode Island Fern

    I was going through some material from Cory’s Lane, a Carboniferous fossil site in Rhode Island, when I noticed this fern. It didn’t really look like anything else I had and so I came here for some help. I’m very new to identifying fern fossils, so any help is greatly appreciated.
  14. Sponge or concretion?

    I assumed this item was a concretion. I regularly find fist-sized concretions in the Argentine member of the Kansas City group (Pennsylvanian subsystem). But looking this morning at a comment by @WhodamanHD here I wondered whether what I have is a sponge. The specimen is about 6 inches across and 4.5 inches from top to bottom. What do you think?
  15. Large Crinoid

    I was out fossil hunting and was seeing some small shells and pieces of small crinoid. Then I came across this giant. It is 2 pieces of crinoid stuck together in matrix. I am used to Cretaceous fossils not Pennsylvanian. Does anyone know if this is large for a crinoid? It is the largest one I have seen but I have only looked for crinoids 3 or 4 times before. Size: Longer one is 16mm in diameter. Smaller one is 14mm in diameter.
  16. Pennsylvanian Shell

    Found in creek. Liberty, MO. Shell Of some sort. Pennsylvanian.
  17. Carbon Film Plant/Arthopod?

    Does anyone know what this fossil is? It might be a pseudo fossil. It was found in Liberty, MO, USA. Pennsylvanian. Fossils found near it include crinoids, shells, and other marine life.
  18. The town of Morris, Illinois was once home to a number of rich sites for Mazon Creek fossil collecting, remnants of early 20th century strip and pit mining of the Colchester Coal. As the town grew, these localities were reclaimed, turned into subdivisions and commercial developments. One of the most well-known sites was called Chowder Flats, named after the high proportion of clams found there. In the late 1980s the spoils were plowed under and development began at that spot, but it was not built up all at once. New houses have continued to be put up on empty lots right up to the present- in fact, construction has recently started on two of the last three remaining lots. I was lucky enough to be checking out the site this last week on a day off work and found that they had dug up those two lots to lay the foundations, leaving piles of fill surrounding the building sites- and I was hoping in that fill I would find some of the famous Mazon Creek nodules. I parked on the street nearby and approached one of builders to ask if he minded me searching the piles. He said it wouldn't be a problem and asked if I was searching for fossils, so I told him I was indeed. He had actually been involved in construction at the site for years, and told me how years back the building sites there used to be crawling with fossil collectors, but I was the first person he had seen collecting in a long while. I thanked him and started searching, and throughout the day he would also toss me nodules he came across! It didn't take long to find my first nodule, and I was able to turn up many more over the next few hours- by the time I had to leave, I had collected about 1-2 gallons worth weathering out of the dirt piles. Great results for not a lot of effort, especially in comparison to the work needed to find things at Mazonia-Braidwood/Pit 11 these days! But that wasn't what made the day truly unforgettable... I will continue with that in the next post!
  19. Arizona Sponge

    I found a sponge in the Pennsylvanian Naco Formation north of Payson, Arizona. It may be the same species as an earlier find although instead of pancake form it is a conical form: http://www.thefossilforum.com/index.php?/topic/82186-knocking-about-the-naco-pennsylvanian-sponges-and-corals/&tab=comments#comment-871386 The first photo is of the convex outer surface. Part of top is broken off. Longest length of the sponge is 8cm. Any ideas as to identity? @Arizona Chris See photos in additional posts since I am doing this on a phone and cannot reduce file size.
  20. I am preparing a plate from the Upper Pennsylvanian Naco Formation, in Southern Arizona. I think I may have found part of a trilobite, among all the brachiopods. Does anyone have a clue as to the species? I really can't find any info on trilobites in this formation. The locality is definitely not known as a trilobite-collecting one.
  21. I have had these in my collection and just looking for a confirmation that they are the Pennsylvanian sponge Regispongia contorta from Palo Pinto limestone of Cisco, Texas.
  22. Brachiopod help

    Can anyone help ID this shell? It's from the Pennsylvanian Pottsville Formation near Cordova, Alabama. Size is about 3/4 to 1 inch across. Found in a layer of shale with lots of plant fossils.
  23. Cepholopod? Fossil ID

    I traveled up to OK to do some hunting last week. I stopped near a town called Gene Autry, OK near the Washita River. I found this at the site I was hunting. Sorry the top isn’t in focus. I was trying to get the shape of the sections on it. It looks like a cross between an orthoceras and a baculite, but I am pretty sure the site was Pennsylvanian despite the geological map saying it is Holocene. I also found what I believe was part of a crinoid stem, which turned to dust when I tried to pick it up. I got a pic first though. I’m learning my lesson. I cant see any septa on this, so I do t know what it is. I’m sure this is an easy one, I’ve just never seen one. Any Help would be appreciated.
  24. Eusphenopteris?

    I was hiking in Berkeley county WV and last week and came across this fern fossil? I'm a neophyte when it comes to fossil ID but wanted to know if anyone could give me some idea of what I found? Thanks, Matt Orsie - Hedgesville, WV