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Found 659 results

  1. Mazon Creek plants

    These two Pit 11 nodules popped over the past couple weeks. I haven't found anything similar to either in the past, so I'm hoping for a bit of help. #1)
  2. Late Carboniferous Gastropod

    Possible ID of Trepospira sphaerulata from a local gastropod expert, but he isn’t sure. Similar ones in a group with original specimen at the right. Left is suspect of being related, but it might be.
  3. Location Missouri Found in limestone that was blasted out by construction workers The area is Pennsylvanian on the geological map I have also found prehistoric fish teeth in the area along with Brachiopods, Crinoids, and horn corals.
  4. Mollusk ID Requested

    All, I found this fossil in a shale deposit of Pennsylvanian age in Northeastern Oklahoma. The shale is probably Chanute formation and contains other marine fossils. I would appreciate any help with ID. Best wishes.
  5. Location: Missouri Geological map states that the area is Pennsylvanian Found in a rock pile left by construction workers that blasted out the rock. I have found a few teeth in the area such as Petlodus, Orodus, and a few others. Previously posted on r/FossilID they gave some good insight, but I am curious to what other enthusiast think. I know its some sort of Holocephalan but I was told it could be something from Eugeneodontida I have also found another fossil near it, but i did not want to assume they were from the same shark, or if it was from a wild more modern animal Size reference, with right side having flash on while the left does not.
  6. I would like to trade Trachydomia spp. snails for any legally-collected rough or trace/track fossils, from any era, any location. Here are updated images of what I have left of Trachydomia spp.. The first three in the front have been lightly coated with a clear acrylic (?). The other image is of Desmostylia tooth fragments (Langhian Miocene) from Sharktooth Hill, near Bakersfield, CA. These were obtained at a local rock and mineral show several years ago. I tried to get these to fit together to make a complete specimen. The only one I could do that with is the third one in the first row.
  7. Location: Missouri Local geological map dictates that the area is Pennsylvanian Found in a rock pile left by construction workers that blasted out the rock. I posted a few of these teeth onto r/FossilID but I have not gotten any good responses to the ones below! So I made an account to show my as of right now unidentified specimen! I have found a few shark teeth in the area, such as Petalodus , and a few teeth that look to be from Eugeneodontida. These are by far my smallest shark teeth, and I was very fortunate to find any!
  8. Lepidostrobophyllum or something else?

    Hi all, I discovered this rather unusual fossil at an exposure of shale a few feet above the Mahoning coal of the Glenshaw formation, which is Westphalian D in age. I was thinking that it is probably just Lepidostrobophyllum, as the Mahoning coal is pre Carboniferous Rainforest Collapse so lycopod material is relative common within its horizon. For those of you that don’t know, Lepidostrobophyllum is a leaf like part of the Lycopod reproductive cone. However, I have found arthropod material at this exposure before and just wanted to make sure that it is in fact Lepidostrobophyllum and not something else. Thanks in advance
  9. Last weekend I decided to take a short drive to Vermilion County, IL and get outside for a little bit. I haven’t been able to do any fossil hunting since COVID-19 reached our shores, so I had a few iffy sites less than 40 minutes from home in mind as I was driving. The first two proved fruitless, but I decided on a whim to take a new road over a local river in hopes of finding some exposures there. The river was running high with verdant growth all around and dragon and damselflies filling the air. As I looked down from the bridge I saw sandy shore, concrete bridge abutment, and then a small section with some intriguing rocks scattered along the river’s edge. Once I made my way down to river level, I found that the black rocks visible above were pieces of black shale and coal. I was excited! I had been thinking of black shale since collecting some on an ESCONI trip last year and reading @connorp’s posts about black shale finds. This shale was much more fragile and bedded than the Mecca Quarry Shale I found last year, so I was able to split it easily by hand. I was too excited, so I forgot to take any in situ photos (I took the ones above on my way back to the car). Before too long, I spotted the unmistakeable shape of a dermal spine from the iconic black shale chondrichthyan fauna Listracanthus hystrix- a strange shark relative covered in spiny denticles. I spent about 30 minutes searching this small exposure and turned up several more Listracanthus, the inarticulate brachiopods Lingula and Orbiculoidea, fish scales, and some mysterious spine fossils. Unfortunately, almost everything was tiny (less than 1 cm) and I don’t have a macro lens for my phone yet, so photos of most of them will have to wait. Here is everything I kept after trimming the matrix down: I will share some more pics of the best Listracanthus in my next post.
  10. Wow a First

    Exciting find....most of what I have found in this area are brachiopods, bivalves, crinoids, coral and some very cool gastropods. One of my sons was out with me a couple of days ago and he tried his hand at removing a fossil from the rock while I was working on a brachiopod. I didn't notice what he found until he showed me after breaking it free and I couldn't believe it..... I never found one of these and he found one on his first try..... lol We had to glue two pieces together though...because there was some collateral damage.
  11. https://phys.org/news/2020-06-million-year-old-fish-resembles-sturgeon-evolutionary.html?fbclid=IwAR3FE_g9MI_kaL_Nc25IdxqjMQ3F2cfBCq33zml_J4gRkPMkh8nPecNsYjw Jack Stack et al, Tanyrhinichthys mcallisteri, a long-rostrumed Pennsylvanian ray-finned fish (Actinopterygii) and the simultaneous appearance of novel ecomorphologies in Late Palaeozoic fishes, Zoological Journal of the Linnean Society (2020). DOI: 10.1093/zoolinnean/zlaa044
  12. Folks, I found this fossil mollusk from a shale deposit in Northeastern Oklahoma. The shale is of Pennsylvanian age (probably Chanute formation), and contains other marine fossils. I would appreciate any help with ID. Best wishes.
  13. Stigmaria or Young Lycopsid?

    From my collection of St Clair plant material - any ideas? Less than half a centimeter thick, about two inches long.
  14. Mazon Creek unknown

    This Pit 11 nodule popped today. I'm getting shrimpy vibes but I'm really not sure what to make of it. Any thoughts?
  15. Pennsylvanian wood?

    Found something I haven't seen before while hunting in Pennsylvanian limestone a couple weeks ago. I feel like this is poorly preserved plant material but there are not many discernible features, even under magnification. Any thoughts?
  16. Found a number of fossils today along a bank of the Middle Fork Vermilion River near Oakwood, IL. There was a long coal seam (see 1st picture) with lots of fossils and concretions sticking out above and below, and nearby on the ground. I'm fairly new to fossil hunting, but I've taken some guesses on what these are. Looking forward to see what you all think Coal Seam #1 - Huge piece of what looks like fossilized wood? Was very heavy #2 - Calamites? #3 - Fern-like, not sure #4 - Not sure. Scaly part makes me think it's coral shell or something, but the rest is clear like quartz with some iridescence inside. #5 - Looks like a fossilized charred pointy piece of wood? #6 - Maybe coral with red spots. Translucent/pink on the inside #7 - Some sort of space peanut? Coprolite? Iron Slag?
  17. ARIZONA FOSSIL ADVENTURES By Chris Schur Exploring the Winkelman Red Brachiopod Site. On Highway 77, one mile north from the turnoff to Winkleman is one of the most awe inspiring scenes to be found in Arizona. Here, the road cuts through a vaulted limestone canyon hundreds of feet deep, with the multihued layers clearly visible. At this location lies an old quarry on the north side of the road which cuts right into the Paleozoic Naco limestone cliffs. This February, we visited this site with some paleo friends to examine the fauna present and determine the suitability for future outings. We found that large boulders of limestone littered the bottom of the old abandoned quarry, which were once part of the surrounding cliffs. A hundred feet or so into the man made canyon, the limestone boulders contain bright red chertized fossil casts of several types of brachiopods, crinoids and bryozoans. Also present everywhere are worm burrow trace fossils, found in a spectacular violet hued limestone matrix. Description of fauna present: Brachiopods. Two types of marine brachiopods are abundantly preserved in red chert. The first type, a small Spirifer ranges in size from less than a quarter of an inch upwards to over an inch. This is by far the most desirable, but less common of the two brachs seen here and are usually preserved as complete three dimensional casts with limestone filled centers. The second and far more common is an unidentified rounder heart shaped brachiopod. With sizes ranging from one half to two inches in diameter, including many large and fragmented shell pieces. The wall is thin, and the center also filled with limestone, so one must be careful in using acid to extract the delicate red or pink chert specimens, or they will fall apart. Crinoids. This site contains some of the largest crinoid stems I've ever seen. While most are 3/8 of an inch in diameter, we found many much larger. The really big ones were nearly an inch in diameter, with a small rounded five point star shaped central canal. Countless smaller stems are seen as well, forming much of the grey colored limestone matrix itself, often referred to as "crinoidal limestone". Some of the largest ones however were preserved in red chert, and several one to three inch long specimens were retrived. Bryozoans. Two types of "moss animals" were found here. The common net like Fenestrellina types were abundant, filling in the spaces in the limestone matrix with mostly small fragments. The second, and much more common type was a small branched animal, usually preserved as a black film on many of the loose limestone boulders in the bottom of the canyon. Trace Fossils. On the visible surfaces of many of the large boulders in the bottom of the canyon are the trace remains of hundreds of channels and tunnels in the fossilized ocean bottom from burrowing invertebrates typical of mid to late Paleozoic time periods. On many of the exposed surfaces of the limestone, we can see one to two inch diameter trails where the animal tunneled through the muddy bottom crossing and passing through the tunnels of others as well. Often we see and entire block of violet hued limestone with burrows passing through the stone, filled in with white limey sediment, layer upon layer as the sea bottom slowly filled in with more mud. Cross sections of the burrows are oval in shape, and typically an inch tall, and 1 1/2 inches wide. As for a possible animal that formed the burrows, the fossil record here does not preserve any mollusk or crustacean large enough to have made them, indicating that either it was a soft bodied animal that did not fossilize or a crustacean whose chitinous outer exoskeleton that dissolved or fell apart soon after death and prevented fossilization as well. A useful observation is that within the violet limestone matrix containing the burrows, we find many of the red chertized brachiopods intermixed. This indicates that the red brachs coexisted with the burrowing animals and shared a common ecosystem. Extraction of the Fossils. When you visit this site, be prepared to do a bit of hard rock quarrying to remove the good specimens. Because this site has been known for years, don't expect to pick up small pieces of limestone matrix and have them filled with choice specimens! The best specimens will have to be removed with hammer and chisel from the large limestone blocks. We have found that a standard geological pick is not enough to extract the material. The best tool is a heavy duty 1/2 to 1 inch diameter masonry cold chisel and a heavy hand sledge. Also mandatory will be a good pair of safety glasses to deflect flying shards of matrix, and a pair of work gloves to protect your hands. Remove the prospective fossil by chiseling a deep channel around it, keeping at least an inch away from the delicate red chert. When the channel is at least an inch deep, you can pop it off with one swift blow, or work around the base with a smaller chisel. Once the specimen and surrounding matrix is removed, the fossil can either be displayed as is, or removed from the matrix. While mechanical preparation works well here, some success with smaller specimens can be had by dissolving the limestone with acid. For most small pieces, vinegar works well, remove only the outside material but do not leave in too long because many of the larger brachiopods are filled in the center with limestone which helps support the fragile shell material. Muriatic acid that has been diluted with water works faster, but should only be used under adult supervision. The large crinoid stems come out particularly well with the acid treatment, leaving a hollow center in the stems. Further explorations. We have not been further up the canyon, however there is no doubt that the best and freshest specimens will lie in the rugged cliffs beyond the collection site. While such a hike should not be attempted by the inexperienced, prepared fossil hunters may uncover a rich bounty of more red chertized fossils in the walls beyond. The Pennsylvanian Naco limestone contains in other parts of the state some of the best brachiopod fossils to be had, along with plentiful bryozoans and other interesting marine invertebrates. Other layers of limestone contain no apparent fossils at all. But it is the lure of the ancient sediments that push the fossil hunter onward, always hopeful that next discovery could be just around the corner! For furthur reading on this spectacular area, refer to USGS Bullitin 176 highway road log by Wess Pierce. I wish to thank Tom McGarvin of the Geological Survey office in Tucson for helping with the identification of the sites age.
  18. Found this in some Pennsylvanian aged shale in Ambridge, PA at the well known mahoning exposure. It doesn’t have visible pinnae like the ferns I’ve found in the area, but it could just be a strange preservation. Any ideas - is this just a fern? Thanks!
  19. Receiving this gorgeous but mysterious specimen is from Upper Pennsylvanian limestone dated around 290-300 million years ago from somewhere around Kansas City. Looks like a tooth to me and my best guess would be orodus? But I have little experience with Pennsylvanian shark teeth in general and especially from this area, also cannot find a comparison elsewhere online. Any help will be appreciated.
  20. Mineral Wells, TX Fossil Finds

    Hello Fossil Friends! I recently went on a kayak camping trip on the Brazos River in North Texas and made a stop by the Mineral Wells Fossil Park. We found some incredible fossils both on the river and at the park! I was so excited about our finds that cleaning and ID'ing the fossils took priority over any cleaning and tidying up of camping gear... I started with the Mineral Wells fossils, since there were a lot of great specimens and some decent information available online about the fossils from that park. I was able to ID a lot of specimens easily (crinoids, nautiloids, bivalves, brachiopods, bryozoa, gastropods, sponges, corals and trilobites). This post contains the fossils (or what I think look like fossils!) from Mineral Wells Fossil Park that I have not been able to ID. This is my first attempt at any fossil hunting and identification, so please bear with me and I am open to any and all advice! I don't have a macro lens, so these pictures are just about as good as it's going to get. HOWEVER I would be willing to try to get more/better pictures if needed to help ID! Any assistance TFF community can give me on ID'ing these would be so greatly appreciated! Thanks in advance. Location: Mineral Wells Fossil Park, Texas Park is dated to Pennsylvanian Period, just over 300 million years ago #1 #2. It is a bit difficult in the picture to see what I think is interesting about this find... In the first (scaled) image, it looks like there may be some small bumps around a central raised area.. possible echinoid plate? #3 #4 #5. #6 #7 #8 #9 #10. This didn't clean up as well as I'd hoped, but I picked it because it looked like a closed mollusk. A piece broke off during cleaning which makes me think it may be just a rock? #11. Crinoid cirrus? Root? Maybe a small piece of stalk? #12 #13 #14 #15 #16 #17
  21. Pennsylvanian bivalve, Dunbarella?

    Bivalves always challenge me. If the ear (is that the right word?) on the left wasn't present, I would have called this Dunbarella sp. But the rounded ear doesn't match any species of Dunbarella I've seen. Maybe another genus, like Aviculopecten? Not sure. From Pennsylvanian black shale in Illinois. Thanks for any help.
  22. Fish remains?

    I feel like this is a smattering of disarticulated fish bones, but I'm not positive. The preservation is not amazing so even under magnification I'm not sure if these are bone or not. Found in Pennsylvanian black shale in Illinois. Any thoughts? @RCFossils Various levels of magnification
  23. Pennsylvanian Fern ID

    Several years ago I collected these ferns in central PA. I am currently working back through my collection making sure that everything has an identification. I have most of the identifications down, but could use some help pinpointing or confirming these identifications. Any help is greatly appreciated. Thanks! #1- ???? - I tried to tip it in the light so that it is more visible. It measures about 53mm #2- Neuropteris ovata? #3- Macroneuropteris scheuchzeri? It measures 40mm #4- Neuropteris? #5- Neuropteris on the left? I know that it is Macroneuropteris scheuchzeri on the right #6- Macroneuropteris scheuchzeri? #7- ???? - It looks like a branch with thorns
  24. Pennsylvanian Nautiloid

    This one is found in Yangquan of Shanxi, China, together with Domatoceras and Huangheceras, Pleuronautilus etc. This one has an envolute , slowly exapanding coil, with an edge on the bottom side (missing on the top side possibly due to wear and tear) . It seems to have an wavy profile, possiblely due to large nodes. any clue what it could be?
  25. Late Pennsylvanian Seed Fern

    Hi all, Here’s an interesting plant find. I discovered it in a locality in Western PA known for producing good plant fossils. I’m thinking seed fern, maybe related to Alethopteris somehow but to be honest I’m not sure what the species is. Any help would be appreciated. Thanks in advance Stratigraphy: Connelsville Sandstone of the Casselman Formation of the Conemaugh Group. Age-Late Pennsylvanian, ~305 MYA
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