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  1. Yesterday I finally made it out to one of my favorite hunting spots after (almost exactly) a year away. This road cut in La Salle County Illinois had been visited earlier this year (I believe) by @Nimravis, @aek and @connorp, but I really wanted a crack at it before summer fully kicked in. As I had been warned, it was already heavily overgrown, with poison ivy located intermittently across the slope. There were also mosquitoes in the shady areas and wasps in the sunny ones. However, with some delicate maneuvering I was able to avoid most of the hazards, with only some mosquito bit
  2. I was lucky enough last week to be able to make my second donation to the collections of the Field Museum of Natural History in Chicago. This donation consisted of two Mazon Creek finds from the river itself, both collected on the I&M Canal outing last year. The first is an extremely rare tetrapod larva. The second fossil is an exceedingly well-preserved Orthacanthus tooth, featuring serrations in the cusp, a very rare trait for Mazon Creek teeth of this sort. It may prove to be complete as well. I was able to visit the museum to make
  3. Last year @jdp was kind enough to identify the tiny and jumbled skeleton I found in a concretion in eastern Illinois http://www.thefossilforum.com/index.php?/topic/107472-mysterious-jumble-inside-pennsylvanian-concretion/ as a lysorophian tetrapod and direct me to the Field Museum in Chicago as a possible repository for it. This month I finally completed the donation and it has been added to their collection, a fantastic event for someone who has been visiting the museum for more than 30 years to gaze in wonder at their world-class collection. Thank you again to @jdp and The Fossil Forum for m
  4. deutscheben

    My Mazon Creek Finds

    I will be using this thread to post what I have found fossil hunting in the Mazon Creek area, including the ESCONI Braceville pile, Mazonia/Braidwood, and any other sites I get a chance to explore. Although I had been to Mazonia a few times previously with virtually no luck, my first successful trip was with ESCONI last September at the private spoil pile they have access to. These first fossils are all from there. I have tried to give the best IDs I can- please jump in if you think I have anything wrong. I also forgot to put something in for scale on this first batch of photos, my apologies.
  5. Marco90

    Pecopteris villosa

    From the album: My collection in progress

    Pecopteris villosa Brongniart 1822 Location: Mazon Creek, Illinois, USA Age: 323 - 299 Mya (Pennsylvanian, Carboniferous) Measurements: 2x12,5 cm Kingdom: Plantae Division: Polypodiophyta Class: Polypodiopsida Subclass: Marattiidae Order: Marattiales Family: Marattiaceae
  6. Last weekend I had the opportunity to spend a few hours collecting in a quarry in northern Illinois that exposes most of the Galena Group (Late Ordovician). There was lots of fresh rock to hunt through, and it was a good and productive trip. As usual, lots of gastropod molds were found. Hormotoma sp. Liospira sp. Sinuites sp.
  7. I live in Chicago and for a while I’ve been wanting to try Fossil Hunting in Mazon Creek. My first trip three weekends ago I tried to have myself prepared but still wasn’t quite sure what I was getting myself into. I hiked to the tipple area, there I had a really hard time telling rocks from concretions because especially in that area most of the rocks are covered in an orange rust. I collected 5 gallons of what I later realized were almost exclusively rocks. The trip was still worth it though because there were lots of these fast little lizards running around on top of the exposed coal, a
  8. Runner64

    Mazon Creek Collection

    I'll update this thread with my Mazon Collection over the next few weeks. With some good weather out yesterday, I managed to get my first fossil hunt in for the season and will post a report in this topic. I will be moving this upcoming summer which will put me even further from Mazon Creek so I have purchased a few pieces to fill in the genus/species I haven't found yet and will mention if I purchased a fossil. I still hold out hope to find some of these pieces I purchased eventually but will realistically be difficult if I only can make 1 trip a year. Fauna Tullimo
  9. Hi all! Found this fossil in my garden, in northern Illinois. I was also wondering how old it is too. Thanks a ton :)
  10. connorp

    Pennsylvanian fish bit

    I recently found this bit of fish bone in the LaSalle Limestone of Illinois (Upper Pennsylvanian). Measures about 1cm in width. I know that tiny bone bits are tough to identify, but the surface texture on this one seems pretty interesting. I haven't found anything similar before. The positive is shown above, although I think the negative shows the surface texture better. Can anything be said about this? @jdp @RCFossils @deutscheben Thanks for any help.
  11. I collected this trilobite pygidium in the Galena Group (Upper Ordovician) of Illinois. I don't immediately recognize it, especially since it is just a mold. It is fairly large. My best guess is Isotelus but I was hoping one of the trilobite experts here might have a better idea. Thanks for any help.
  12. Today I too a quick run out to the Kane County Fairgrounds in St. Charles, Illinois to visit the Chicago Gem and Mineral Show that is held at this location every Memorial Day Weekend. The show runs today and tomorrow and it opened at 10 am. My wife and I arrived at about 9:00 am and sat in the car for about 40 minutes. It pays to get to this show early, because there are always a lot of attendees and by the time the doors open, there could be about 150 people in line. A few minutes after I took the above picture, the line snaked a
  13. deutscheben

    My Pennsylvanian Shark Teeth

    Over the last two years I have been able to collect a small but diverse group of shark and other chondrichthyan teeth from Pennsylvanian deposits in Illinois. Actually, all but one of the teeth are from one exposure of the La Salle Limestone of the Bond Formation- the other tooth was found in some roadside rip rap limestone in Central Illinois which seems to share many species with the La Salle, but unfortunately I have no way of determining the exact origin. Here is the first tooth, this is the one collected from rip rap in northern Champaign County. It is a cladodont type tooth,
  14. I found this specimen in the Galena Group (Middle/Late Ordovician) of northern Illinois. Seems familiar but I can't place it. Any thoughts?
  15. For the last 4 years I have been collecting plant fossils from sites in East Central Illinois. These fossils were all brought to the surface by underground coal mining in the first half of the 20th century. Most of the spoil piles in the area have been graded or flattened out, but a few still remain, standing tall above the flatland. One particular pile is, I believe, the source of most or all of the fossils I find. The shale that makes up the spoil has been fired by the internal heat of the pile, resulting in the hard, reddish material known as "red dog". This shale i
  16. I am excited to share with my friends on The Fossil Forum a significant discovery that I made last week. In 1870 an unusual spine like structure was described from a Pennsylvanian aged black shale site in Illinois. The fossil was believed to belong to an unknown chondrichthyan (shark) that is unlike anything anyone has ever seen. For over 150 years, these denticles have shown up in sites around the world. This animal ranges from the Pennsylvanian to the Triassic meaning that it survived the Permian extinction. Researchers have been perplexed and frustrated as aside from a few pa
  17. Tomorrow (March 1st) is opening day for fossil hunting at Mazonia-Braidwood State Fish and Wildlife Area, also known as Pit 11 to Mazon Creek collectors. The weather has been on an excellent trend running up to now, with many days over the next week predicted to have highs in the 50s and even 60s, although a few days do have rain predicted as well (and things may already be muddy as the soil thaws too). Who is planning on heading out this week to kick off the season? I will be taking tomorrow off work to be there on opening day. I missed out on the 2021 season entirely, and actual
  18. Hello everyone! Today I ventured out to the Mazonia-Braidwood State Fish and Wildlife Area for my first time, and it was… something. This post is going to serve as both a journal of my day, and as a request for assistance as I try to figure out what exactly a concretion looks like. Once I got my permit outside the office (which is just down Huston Rd a bit from the IL-53 and Huston Rd intersection; this is for people like myself who struggled to find an address or location of the office), I headed to Mazonia south unit, where I went to fossil hunting site 3. There were not really a
  19. Should I preserve this. And, please tell me how I should preserve this.
  20. corycatfish

    Fossil Identification

    Hello everyone! My name is Lily and I'm happy to be joining the forum. I think I may have found my first fossil! I don't want to get my hopes up but I'm pretty excited. Out of my 20 years on this Earth of picking up random rocks in hopes of finding a fossil, I think I finally did it. I found it in Southern Illinois about 30 mins from STL, MO while I was gardening for my grandma. I dug a shallow hole for the plant & hit the rock. I can try to get clearer pictures if needed. Let me know if you need any more information as well. I'd like to know everything you can tell me about it! Thanks so
  21. Today I drove 6 1/2 hours - 340 miles (Round trip) to meet up with about 20-25 other ESCONI ( Earth Science Club of Northern Illinois). This site visited was a shaft mine on private property and we were allowed to collect for 5 hours, making for a long day when you add in the drive time. I believe that the fossils found at this location are about 600,000 to 1 million years younger than the fossils found at Mazon Creek. If I am wrong, one of the Forum menders that were in attendance can correct me. As usual, I may miss a name, but here are some that I knew were present: @stats , @deutscheben ,
  22. connorp

    Pennsylvanian Brachiopod ID Help

    I collected these two very small brachiopods in the LaSalle Limestone (Pennsylvanian) of Illinois. I have collected in this formation dozens of times and have not come across either before, and was hoping for some help with the IDs. @Tidgy's Dad @deutscheben @cngodles Any thoughts? Thanks in advance.
  23. so just recently i was going on a trip to look for fossils, trilobites specifically. On the trip i was able to find plenty of goodies; brachiopods, bryozoa, etc… But i never found any trilobites—well, except a possible pygidium. I did my digging at Savanna, IL, which from what I could find was known for finding lots of trilobites; and complete ones at that. Was I doing something wrong on my trip? I guess what i’m asking is there some way to more easily find trilobite fossils? Like, is there a way to tell what areas are likely to have trilobite fossils or what rocks wou
  24. I've found a large number of similar looking, but fragmentary, multicuspid petalodont teeth in the LaSalle Limestone (Late Pennsylvanian) of Illinois. This is one of the more complete specimens I've found. I haven't been able to find a comparable specimen in literature, and was hoping somewhere here might have some thoughts.
  25. deutscheben

    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 downloa
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