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Found 220 results

  1. Need help identifying this tooth which was found in the Mississippi river near the confluence of the Mississippi and Illinois rivers. The river bed is constantly dredged to pull sand from the bottom of the river to the river bank. Area is near Saint Louis, Missouri, USA.
  2. Today I went on a dual club field trip (Earth Science Club of Northern Illinois and Rock River Valley Gem and Mineral Society) to an Ordovician aged quarry in Roscoe, Illinois. It was a hot day for fossil hunting, but a cool breeze kept things refreshing. There were over 20 people on the trip and everyone was finding fossils of some sort. Some pictures of the quarry.
  3. Hi All, I took a trip to Mazon Creek recently with my family. It was the first time that we had visited the site, and we came away with a few concretions. One piece of a concretion that we found already split in the field seemed to have an elongated impression upon it. We're not quite what organism could have created the impression, or even if it is a true fossil at all. Perhaps it is part of a marine worm? We'd love to hear what you all think about it.
  4. Carboniferous trilobite ID help

    @piranha @GerryK Can anyone confirm this is Paladin transilis? I found this in the Carboniferous of Illinois. Not sure if they've ever been described here...... And yes it's preserved in pyrite.
  5. Are any of these Mazon Creek Fossils?

    Hi everyone, After the thunderstorm yesterday, me and some friends drove up to the Ponderosa area of Mazon creek park to look for fossils. It was our first time, and we didn't know the specifics of what to look for, but we spent three hours walking the whole perimeter of the lake, braving the aggressive swarms of biting insects. Can anyone here tell me if any of the rocks we found are the right ones to possibly contain fossils? Attached is a picture of all the rocks, and an album with closeup pictures. https://photos.app.goo.gl/XoCZQJwgWU7dbcoS7 Thanks a lot!!!
  6. Good trilobite imprint?

    Found this at Forked Creek in Wilmington Illinois. I would like to know if it is rare and or high quality. I would also appreciate if you could help ID it.
  7. Any sites in Central Illinois?

    Any public locations in central Illinois? Or near Bloomington Illinois
  8. Mazon Creek Tree Stump ?

    Hi all again Found this again in Wilmington sport club, Was told by a friend was petrified tree stump wanted opinions from some of you guys that might have found something like this.
  9. Usually I have at least a guess at whatever I find is, but this has me stumped
  10. Tully Monster Coloring Page

    I drew this coloring sheet to give out at an upcoming children's program I will be doing at the public library my mom works at. I have done two previous programs over the years on fossils and dinosaurs, but this time I am going to be concentrating on the fossils of Illinois. Of course, this includes our bizarre state fossil, the Tully Monster! The sheet features a Tullimonstrum front and center chasing after an Elonichthys, with a pair of Essexella making their way across the background. It's not the most scientifically accurate drawing, but I hope it will be fun to color! Feel free to download and share- I uploaded both JPEG and PDF versions. (The PDF version also has some descriptive text on it) tully monster coloring page smaller.pdf
  11. Mazon Creek fossil

    Hi all Found this again in sporting club wilmington area ,not magnetic almost Poop like
  12. Greetings, all! I am currently writing a thesis involving fossils from the Burlington Limestone near its type section along the Illinois/Iowa border. To demonstrate the diversity of the crinoidal remains from the limestone (over 400 species have been described from the Burlington alone!), I am looking for photographs of articulated crinoids. Do any of you have any that you would like to let me include in my thesis? If possible, I would like high-res images of crinoids identified to genus or species with a scale bar/ruler present in the image as well as the collection/locality info. I can't guarantee that I will use every image posted, but if I use your image, then I will acknowledge you in my acknowledgements and give you credit for the image. Thank you for your time & assistance! -Elasmohunter
  13. Cephalopod?

    Hey! I just took a trip out in the pouring rain to a road cut in Oglesby, Illinois. This road cut exposes the Pennsylvanian LaSalle Limestone member of the Bond Formation (thanks to @deutscheben for this info!) I found lots of beautiful brachiopods, but as I was heading out, this guy caught my eye. What do you guys think?
  14. The Lone Star Quarry in Oglesby, Illinois is now part of the adjacent Starved Rock and Matthiessen Park. A Fossil Park for Illinois by Roy Plotnick https://medium.com/@plotnick/a-fossil-park-for-illinois-4c2cb44af2e9 Matthiessen — and Starved Rock — just got a lot bigger (VIDEO) DNR increases parks by 55 percent after $11 million deal with cement company By Tom Collins http://www.newstrib.com/free/matthiessen-and-starved-rock-just-got-a-lot-bigger-video/article_203e37f8-d89a-11e8-9a7e-e72ef52ec0d6.html A web page about other fossil parks: Fossil Parks, myFossil https://www.myfossil.org/fossil-parks/ Yours, Paul H.
  15. Mazon Creek Spots

    So being a newbie in hunting fossil’s I decided to go somewhere near. I went to the creek and collected rocks which I thought were nodules, to find out they aren’t. Is there any advice on where to find the fossils and what they look like.
  16. New Mazon Creek Collection

    Hello everyone! I've been inspired by so many good Mazon Creek topics in this forum, I thought I would start my own. I'll post my own finds, which so far don't include anything as exotic as a Tully Monster, but maybe I'll get lucky on page 134 or so... I have to credit my kids with getting me interested in fossil collecting. I was always interested in rocks and fossils but when my 10 year old son had his dinosaur phase it really sparked my interest again. I wondered if an ordinary person like me could go out and find fossils? So I Googled fossil collecting and found out that not only could I search on my own, one of the world's best sites for amateurs was just 3 hours away! The date I discovered Mazon Creek existed was 9/10/2017. I know that date because earlier in the day was the last ESCONI trip to the Braceville spoil pile for the year - I just missed it! So in May 2018 I finally went on that trip and was hooked. Since then I've gone to Braceville several times, the I&M Canal trip once, and a handful of trips on my own into Pit 11. I want to thank too many people to list for helping me learn about this new hobby. Everyone I've met on the field trips has been so friendly and helpful. And if you have posted something about Mazon Creek on this forum, I've read it. Special thanks to Nimravis for his Sometimes You Have To Whack It thread, which he started the day after my first trip to Mazon Creek - it has taught me so much and I'm so impressed at what a genuinely nice person he is. And Andrew Bach's book from his American Fossil Hunt site is wonderful, so so helpful. With that, onto the fossils (and lots of questions from me). I thought to start I would show some of my jellyfish, all Essexella asherae, I believe. I find it interesting that they are all so different, although they tend to fall into various "types" - some have a distinct "head", others are just faint outlines, some are just cylindrical shapes. #1-3 below are all from Pit 11 - the first two have a distinct head and the other is more cylindrical. For anyone who hasn't heard of Mazon Creek, these fossils are found in siderite concretions from the mid-Pennsylvanian epoch of the Carboniferous period, from roughly 305-310 mya. Cheers! Chris
  17. Pennsylvanian fish teeth/jaw?

    I posted this find in my trip report thread http://www.thefossilforum.com/index.php?/topic/95184-51319-oglesby-il-roadcut-pennsylvanian-shark-bits-brachiopods-and-more/ but I thought I would put it here too to get some more eyes on it. This piece is from the Pennsylvanian LaSalle Limestone member of the Bond Formation, collected on 5/13 and prepped some over the weekend. At first I thought it was the root of a shark tooth, but as I prepped and revealed the multiple "teeth" on top and the ratio of root to teeth it did not match up. That makes me think it is possibly a part of a jaw with teeth in it, but I have never found anything like that at this site before, nor have I seen any reported from this formation. Any ideas? The scale below is in CM.
  18. Mazon Creek Fossils - ID Help

    Hi everyone - I need some help identifying a few of the Mazon Creek fossils my father and I found over the last two years. I will first apologize for the blurriness of the images, I must have had something on my lens. But, I can take more if necessary (just not today!). Here's the link to the images: https://imgur.com/a/yRaND6K I have three plants, something that's just parallel lines, and something that looks like a shrimp. Any help would be appreciated!
  19. A week ago today, I took the day off work to hit one of my favorite sites, a roadcut above the Illinois River in Oglesby, Illinois. This cut exposes the Pennsylvanian LaSalle Limestone member of the Bond Formation and produces abundant brachiopods as well as occasional other fauna including gastropods, cephalopods, coral, trilobites, and shark teeth. The weather was perfect, sunny but not too warm, when I pulled up. The cut is a somewhat unstable slope of cobbles and boulders of varying size, almost all with at least some fossils in them. To get up to the slope, you have to hop across a small ditch with running water. I have a good sampling of the common brachiopods from here, so I am looking for unusual fossils when I go now. I was very happy to quickly find a piece of trilobite as I started to search the rocks at the base of the hill. (I will put pics of everything I brought home in a response post) One interesting find that I was not able to bring home was this Linoproductus brachiopod with some shell preserved and a really pretty dendritic pattern on it- it was very delicate and firmly embedded in the middle of an ~80 lb boulder. I was able to stay for 4 hours, and I felt like I gave most of the site at least a quick look. I am very happy with what I found- I was able to check off many of the rarer things I was looking for, including shark teeth, a trilobite, cephalopod material, and a brachiopod with spines attached, as well as some nice crystallized brachiopods. I will post all of my finds below.
  20. Please help identify

    I found these recently in Wilmington after forked creek flooded, I have not seen anything like them in the region before
  21. Please help identify this

    This was found near Wilmington, Illinois
  22. Note that this was not found inside of a nodule.
  23. Ricky’s Mazon Creek thread

    Hey everybody! Welcome to my Mazon Creek thread, where I’ll be posting pictures of various Mazon Creek finds! I’ve been hunting there for upwards of 10 years, so I have piles of uncracked nodules just waiting to be opened. So as they open, they’ll find their way here! Feel free to jump in and add your own and keep this thread going! And I’m sure there are many that have gone unidentified, so I’ll probably need some help from the experts!
  24. Megalichthys of Illinois

    Yesterday i found a very rare Megalichthys jaw with dozens of teeth still attached in the Carboniferous of Illinois, USA. This is possibly the best known example of this fish found in Illinois. Not sure yet though. I still need to do more research. You can see four larger teeth in cross-section on the matrix waiting to be prepped out. Then there are smaller teeth in-between the larger ones, maybe 4× smaller. I also found several large scales. I'll attach the best one. All of this material still needs a proper repair and prep job. The preservation on this material is just stunning. I'm not sure it could get much better. These bone fragments and scales are often found with Orthacanthus teeth and Calamites. So it gives us such a beautiful snapshot of the environment at the time. Just awesome! Happy hunting
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