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  1. Dino2033

    Mystery Carboniferous Fossil

    I found this rock in North Attleboro. Massachusetts. It has what I assume is a fossil on it. My best guess would be a seed of some kind but the small circular thing to the right of it is throwing me off. I am away from home right now so I have nothing great to scale it with. The box is roughly 2 inches (5 cm) long to give a sense of scale. I will try to get better pictures when I get back if necessary.
  2. Lucid_Bot

    Strange Carboniferous Bone Thing?

    Hello, This specimen comes from the Pennsylvanian Period of Allegheny County, PA. It is from the Glenshaw Formation and is probably Brush Creek Limestone. The texture appears to be bone. Thanks for the help.
  3. Petrified

    Calamite or leaves fossil?

    Now the area I've been fossil hunting is carboniferous Pennsylvanian but another timeline might be there due to the petrified wood. But won't know anything till geoscientist gets back to me on results. My first guess was a calamite fossil but now unsure. The neat part is whole fossil is iron preserved way. Next thing was the oddities in the fossil itself I couldn't add up for a simple calamite looking fossil. It probably is just a calamite but need to double check and maybe it's just a specific area of a calamite? Let me know thanks.
  4. I have been gradually splitting the concretions that I collected this May with the ESCONI. I have not found anything earth shattering, but it is addictive. I go down to the freezer each day or two and see what is ready to open. The first three photos are from a 5 cm flat/oval concretion , and the last is from a small 1.2 cm circular concretion I am quessing that these are cnidarians, but any and all help will be well appreciated.
  5. First time posting, i dug lurking for a while. Looking for some help to figure out what this is? Found in a region that could be Mississippi or PennSylvanian . Looks like some kind of segmented something or other, worm or something. but I don't know. Let me know if any of you are able to tell what this is! I tried to use light to enhance the detail from different angles.
  6. icycatelf

    Eastern KY creek find. Wood vibes?

    Black bits are shiny. Found as float, so no guarantee it's local. Click for larger view
  7. At long last, I've found it! The near holy grail of Ctenacanthiform fossils!! I have been a bit perplexed at the small Ctenacanthiform tooth myself and @Tales From the Shale found on February 18th at a Bond Formation rock formation. dating to around 300 Million Years ago in Oglesby, Illinois. The tooth specimen is only 8mm in length and I almost overlooked it until I put it under a microscope and dissecting scope. I initially thought it was Gilkmanius. But the medial cusp of the tooth is too narrow and curved to be Gilkmanius. I also thought it could be Heslerodus, but the tooth didn't exactly match the shape of Heslerodus teeth. Last week I checked with my old college Geology Professor (an experienced fossil hunter of the Mazon Creek area) and emailed scientists from the American Museum of Natural History, New York and the University of Chicago, Illinois about what genus the specimen belongs. The following ID the scientists said was a reasonable assertion and my Geology Professor was in no doubt of it...It is an actual SAIVODUS STRIATUS TOOTH!!! The dead give away for the ID was apparently the Sigmoidal profile on the side of the tooth! This is the first truly confirmed record of Saivodus striatus from the Bond Formation that I'm aware of!!
  8. sheetmetaldad95

    NE Oklahoma Fossil Deposits

    Hey everyone, I've been trying to plan a little trip for me and my family to go on a little fossil hunt. I live in Bartlesville Oklahoma and I have several nice places I can go to find fossils all over. Mainly mississippian and Pennsylvanian. I'm looking for areas within an hour or so drive from where I live. I'm aware of the pliestocene finds in the arkansas river in tulsa area. I'd love for someone to send me maps or geologic surveys showing what areas in the topography, and other recomendations. Places I've been to worth noting: Kaw Lake spillway, Ponca City (good shells everywhere) Bartlesville Mound (excellent source of Chrinoids and some bits of coral) Hudson lake (Bartlesville water source, 1- chrinoid calyx found, tons of bivalves and other shells) Turkey Creek, Bartlesville (uncountable amounts of horn coral)
  9. I've visited the Pennsylvanian Bond formation in Oglesby Illinois a few times but have only found a few cladodont teeth so far! I find a decent bit of teeth from crusher plate chondrichyans like Deltodus, but I've also heard there have been some large cladodont teeth found in the area. I'm just curious what is the largest cladodont teeth found in Oglesby Illinois?
  10. Samurai

    Ameura missourienisis

    From the album: Missouri Trilobites

    One of the smaller specimines, but that just makes for better details! Found this little guy in what I call the upper Winterset Limestone member from the Dennis Formation. This pygidium less than 5mm.
  11. During my trip to a Bond Formation Rock formation in Oglesby, Illinois on October 8th, 2022, one of the limestone blocks I found had a small reddish fossil sticking out on the side of the rock. It was about 2mm in length so pretty small. I thought it was interesting so I brought it back with the rest of the fossils collected that day. There was not a lot of room in my garage for the block so I put it outside on a supply bin for a while. The next couple of days, It rained ALOT. One day I remembered that the calcite in limestone dissolves in rain, so I went out that night to check on what could be revealed. I was pleasantly surprised at what I found! The rain had exposed more of the fossil to the surface. I believe it's a Chondrichthyan tooth or a piece of a brachiopod, but I'm not 100% sure so I was wondering anyone could give a proper ID for the specimen?
  12. Starting in early 2021, I've been going fossil hunting at the Mazon Creek area in Grundy County, Illinois. The site I visit the most so far is the fairly large Mazonia-Braidwood State Fish and Wildlife Area. After advice from other members of the Fossilfourm, I've decided to put the nodules I'm most curious about under the microscope and dissecting scope! With these better photographs, I'm wondering if anyone could give a proper ID for these specimens?
  13. This is the second part of my post describing my recent fossil hunting trip with @Tales From the Shale in Utica, of which it was awesome!!! So after visiting the abandoned clay pit, we decided to go to another location in Utica one might not expect to be productive - the former peabody coal company Pit 15 (or at least its outskirts), located not to far away from Lake Shannon, Kankakee County, Illinois (I'm am not going to tell the specific route or address so the area doesn't end up being picked clean). We went there as I had heard a report that a while ago, someone found a sizable Cladodus (or cladodont labeled as Cladodus) tooth at Pit 15 itself. At the top of the outskirts of the Pit was truly Beautiful!!! I expected to find simply nodules in the area. What I found instead were a staggering amount of different rocks with a descent portion containing fossils, most of brachipods though. As the area was once a mine, I've somewhat come up with a theory as to why this is - when the mines were closed, the pit was filled not just with nodule containing rocks but by all the types of rocks available in the Utica area ranging from shale to clay to limestone, likely either Ordovician or Carboniferous in age. It's still a pretty productive site and I've recently analyzed many of the specimens with a microscope and dissecting scope and I hope to get some IDs from them! Here's a possible shark spine I found there!
  14. I recall not too long ago there was a pretty interesting scientific article published in the Journal Science describing how scientists analyzed the amount and diversity of chondrichthyan denticles in ichthyoliths from the North and South Pacific dating from around 20-19 million years ago and discovered a sharp drop in the number and diversity of denticles around 19 million years ago, indicating a massive extinction took place which took sharks 2 to 5 million years to somewhat recover from (it's still unknown if this impacted chondrichthyans worldwide or just in the pacific). Here's the paper: https://www.science.org/doi/10.1126/science.aaz3549 E. C. Sibert, L. D. Rubin, An early Miocene extinction in pelagic sharks. Science 372, 1105–1107 (2021). But after reading it, I remembered how the Mississippian and somewhat Pennsylvanian periods of the Carboniferous era have been called the golden age of sharks due to the sheer diversity of chondrichthyan genera alive at that time. http://www.elasmo-research.org/education/evolution/golden_age.htm What I'm wondering is does this paper, in revealing this early miocene extinction event, inadvertently also reveal that the period immediately prior to the event was a second "golden age" for the chondrichthyans?
  15. Starting in 2021, I've been going fossil hunting around the Mazon Creek area in Grundy County, Illinois. The site I visit the most so far is the fairly large Mazonia-Braidwood State Fish and Wildlife Area and at first, I would barley find anything. Then after visiting Monster Lake and another secret location in the area, I started finding more fossils. However, most are around 2-7 cm. In length and I'm still having difficulty getting IDs for them? Would anyone be able to help ID them? I think this could be some sort of Chondrichthyan or a lobe finned fish? Maybe part of a dragonfly wing or a plant? Plant fossil - Genera unknown currently? I don't know what this could be? The specimen here looks almost like a plant fossil. Worm fossil - genera unknown currently.
  16. On Saturday, I went on a fossil hunting trip with @Tales From the Shale in the area of Utica, LaSalle County, Illinois. After some time driving and looking for roadcuts, we discovered an abandoned clay bed/outcrop not too far away from the town itself. There, we discovered an absolutely massive amount of shark spines and teeth! I would like to know if anyone could properly ID some of the specimens we found!! \ This is one of the best shark spines I found at the site!!! It does look somewhat like the spine of Listracanthus, but I'm not 100% sure!! Possible Crusher plate tooth or maybe the bottom part of a large cladodont? Likely fish teeth or denticles, but I'm don't yet know what species/genus this could belong to? I really don't know what this could be? Maybe some sort of mineral or a fish head? Truly beautiful chondricthyian tooth in a clay matrix!!! However, I still don't know what specific group it could belong to? Maybe it could be a large crusher plate?
  17. I've been recently trying to find some good places to go fossil hunting in the Mazon Creek area and there is one area some say is good but I've never heard or or been to before. It's called the Essex Quadrangle or Essex Quad in Kankakee County Illinois. It's supposed to be extremely close to the old Peabody coal company pit 15 and have fossils from the Essex Biota dating to around the Pennsylvanian period. https://isgs.illinois.edu/maps-data-pub/quads/e/essex.shtml https://ilmineswiki.web.illinois.edu/index.php/0359 I'm wondering if anyone's heard of or been to the place before, what kind of fossils you can find there, and where is it?
  18. Saturday, October 15th, 2022 was the ESCONI Mazon Creek Open House. It was a great day with about 100 visitors to enjoy a event devoted to Mazon Creek fossils. There were numerous forum members in attendance.@connorp @bigred97 @flipper559 @fiddlehead @RCFossils @Roby @Hurtlady @jdp to name a few. For a full report with videos of 3 of the 4 presentations, please visit the ESCONI website. The fourth video will be posted after the research is published. Recently, we've had a few historical posts about the Mazon Creek Open House events in the past, Mazon Monday #133 and Throwback Thursday #132. @Nimravis supplied me with quite a bit of the historical material. Thanks, Ralph! Paul Mayer and Jack Wittry were on hand from the Field Museum. They provided two display cases of fossils, including the holotypes of Essexcella asherae and Lascoa mesostaurara. Random photos from the day. And, more fossils!
  19. I've been to a least a few museums where they would have a part of an exhibit dedicated to the Carboniferous era (of which the Field Museum's section for that in the Evolving Planet is pretty good). But I do wonder what would it be like if a whole A grade small to medium sized museum opened dedicated solely to the fossils found in the Mazon Creek area, including the Essex Fauna. It could be located close to the Mazonia-Braidwood State Fish and Wildlife area and include life sized reconstructions of both the terrestrial and aquatic environments. It could also be a place where fossil hunters could donate there finds to have them displayed so scientists will have an opportunity to study any fossils found (where most of the fossils from the area now I fear end up in private hands). Any thoughts?
  20. I've been looking recently into possibly fossil hunting by Alton, Illinois for specimens of Mississippian era fauna. I'm specifically looking for general places like roadcuts and quarries with 330-340 million year old St. Louis Limestone (Meramec group) in the Alton area. I'm just wondering (without anyone being too specific about localities) is there any general places like quarries or roadcuts that match that description in Alton, Illinois?
  21. Joseph Fossil

    Trip to Oglesby 10/08/2022

    A few days ago, I went with @Tales From the Shale and another friend on a fossil hunting trip to a Bond Formation Roadcut in Oglesby, Illinois with rocks dating around 307-303 Million years ago, to the Pennsylvanian section of the Carboniferous era. We worked for at least 5 to 6 hours, but it was worth it! This was one of the best fossil hauls I've had in a long time at that location! The true gem of that trip was this Cladodont tooth I discovered by sheer accident!!! The specimen may come from the Shark Gilkmanius, but I'm not too sure? The top part of the tooth might still be inside the rock. I found some of the largest crinoid stems I've ever recovered from this locality. Again, I'm not sure their genus identity?
  22. I've been looking at the records of the Carboniferous Eugenodontid Chondrichthyan Edestus in Illinois (famously referred to as the coal shark) in Illinois and I've found that there are a large amounts of reports from Underground mines at Sparta and Coulterville, Randolph County Illinois. I also found a record from fossilworks.org simply listed as "Coal mines of western illinois" at the coordinates 38.7° N, 90.0° W. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&taxon_no=34453&max_interval=Carboniferous&country=United States&state=Illinois&is_real_user=1&basic=yes&type=view&match_subgenera=1 O. P. Hay. 1909. On the nature of Edestus and related genera, with descriptions of one new genus and three new species. Proceedings of the United States National Museum 37:43-61 I'm wondering what are the actual best pits and mines by Sparta and Coulterville Illinois to find Edestus fossils, which ones and either still open or (if closed) still accessible, what safety precautions should one take if fossil hunting in one of these mines or pits, and is Mecca Quarry on the Indiana-Illinois border a good place to find Edestus specimens?
  23. Joseph Fossil

    Bond Formation Cladodont species ID

    Recently I went on a fossil hunting trip with a few friends to a roadcut in Oglesby Illinois from the Pennsylvanian Bond Formation. This was around July and I found a lot of cool Brachiopod fossils, but I decided a few days ago I wanted to get a closer look at some of the larger matrixes I collected to see if I missed something! At the very edge of one the matrixes, I discovered a small pretty exposed cladodont tooth that I couldn't find a specific ID of? The specimen is about 1/2 inch in length (5.0 mm.). But I wanted to see it a bit closer, so I put it under a microscope one of my college professors let me borrow. The specimen has a pretty slender shape overall and the top of the medial cusp appears to be broken off. I compared the specimen to other ctenacanthiformes from the Bond like Heslerodus and Gilkmanius. It does resemble Gilkmanius a bit, but I looked further and have drawn a slightly different conclusion - this could be a specimen of a juvenile Saviodus striatus. https://www.uky.edu/KGS/fossils/fossil-of-the-month_2022-07_Saivodus.php Like Saivodus, the Medial cusp is incredible slender for what's left of it. The Laterial cusps and cusplets on Saivodus teeth are much smaller compared to the Medial cusp than those of Heslerodus and Gilkmanius. On the microscope image, you can just barley make out a small cusplet next to the Medial cusp and a small Lateral cusp on the left side of the image (since under a microscope, it's actually on the right side of the tooth). Still, I'm not 100% sure my ID is correct. I was wondering if anyone is able properly ID this specimen? I'm also wondering if this cladodont tooth is indeed a specimen of Saivodus striatus or another member of the genus (which I would be awesome) or a a member of different Ctenacanthiform genus (which also would be awesome)?
  24. Joseph Fossil

    Saivodus in Illinois?

    I have recently been combing through the geologic records of the Carboniferous Ctecanthiform shark Saivodus striatus and I'v found something curious. It's been found in Mississippian deposits in Indiana, Kentucky, but not really Illinois! https://www.uky.edu/KGS/fossils/fossil-of-the-month_2022-07_Saivodus.php I've heard that Cladodus ferox and C. spinosus (considered synonyms of Saviodus striatus) have been found in the Carbondale and St.Louis Formations in Kankakee and Madison county respectively, but I'm wondering if this is correct? I'm wondering if anyone who have any info on Saivodus fossils in Illinois (especially somewhat Northern Illinois) and if there have been any records of them in Counties like LaSalle, Kendell, or Grundy?
  25. Joseph Fossil

    Oglesby Fossil ID Part 2

    I've visited Oglesby Illinois a couple of times to collect fossils from the road outcrops with Pennsyvanian era fossils - which so far is one of the best fossil locations I've been to so far besides Mazon Creek! On one of these trips, I found what I believe to be extremely Chondricthyan teeth with each only around 1-2 mm. Would anyone be able to give an ID for these specimens?
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