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  1. connorp

    Mazon Creek Flora

    I've been spending a lot of time lately studying the Mazon Creek flora, and am continuously astonished by the diversity and quality of specimens that can be found. I don't think we see enough plants on the forum, so I figured I would go ahead and share some of my favorite finds. First is a specimen I recently shared, and a fitting start to the thread. This is Crenulopteris acadica, the most common true fern found in the Mazon Creek flora. It has been the most common plant I find, accounting for probably half my finds. Next is a favorite of mine. This is a s
  2. connorp

    Unknown Pennsylvanian object

    I found this specimen in Middle Pennsylvanian black shale in Illinois. It measures maybe 8mm in the widest dimension. Honestly not even sure if it's a fossil, never seen anything like it. Any ideas? Part Counterpart
  3. 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.
  4. I thought I jump on the bandwagon of Mazon Creek and show my little collection. I’ve been picking up the odd fossil here and there to add to my allotment. This has been over the last 5 years. Originally I was introduced to the ironstone concretions by Ralph in one of his great auctions to support TFF, which I was lucky enough to win. The first 3 added after the collection photographed in the drawer, I could do with a little help for identification please. 1: sea cucumber, 2: worm, 3: Has a label but it is only the seller’s info ? thank you help and for looking.
  5. 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
  6. connorp

    Mazon Creek Lungfish plate?

    Had this concretion open today. I'm pretty confident it's something vertebrate. Maybe a lungfish plate? @jdp @RCFossils Thanks for any help.
  7. I'm new to fossil hunting myself. So let me add a few things that I haven't seen in the forums for finding sites. First off, I kinda took the long approach. I'll give the steps I have taken. I tried to jump to the "point me to a site to dig and find a fossil", litterally only 1 site in Illinois <where I live> is famous and openned to all for part of the year... Mazon Creek <which unfortunately is a day trip away for me> So started using google. Everything still pointed to Mazon Creek or Rockford area <even farther away>. Now Mazon creek fossils are famous and worth the tr
  8. A couple months ago I received a message from a friend letting me know of an opportunity to collect a usually inaccessible Mazon Creek site. The area used to be a popular with collectors but has since been reclaimed as a subdivision. A house was finally being built on one of the last undeveloped lots, and this meant spoil piles while the foundation was being laid. I initially planned to go later in the week, but instead decided to wake up early the next day and drive down. This ended up being a lucky decision, as the foundation was filled that very next night. The site was not superbly product
  9. Does anyone have experience with the Middle Ordovician brachiopod faunas of the upper Mississippi Valley? I came across this odd fragment in rocks from a quarry in south-central Wisconsin. To my knowledge they are known in North America only from the Appalachian Basin (Tennessee, Virginia, West Virginia, Pennsylvania, Quebec, Newfoundland), not the interior basins like the Illinois basin. Has anybody else seen this critter or similar in the Platteville? As far as I am aware, the only species documented from the Platteville that looks anything like this is Megamyonia unicostata, but that h
  10. Daydreamer831

    Possibly a crinoid?

    Found in a creek in Pekin, Illinois. It's a concretion with a nice fossil imprint. However, I do not know enough about it to classify it. Does anyone have any suggestions?
  11. I think this may be a mastodon fossil, but I have no real idea. I found it on a beach on north island, Kankakee River, Wilmington Illinois.
  12. Over the weekend I spent some time at the Burpee Museum of Natural History in Rockford, Illinois. My primary reason for visiting was to check out their local Ordovician fossils, but I was quite surprised by how large and comprehensive the museum was. Lots of great fossils and cool dioramas, definitely worth a visit if you're in the area. Diorama of the Ordovician sea Trilobites Crinoids and an edrioasteroid Cephalopods Bivalves and gastropods Receptaculitids
  13. I was inspired by @Mark Kmiecik and his quality photographs to finally learn some basic image editing. I had this beautiful Crenulopteris acadica fern open yesterday and figured it would be a good specimen to make a first attempt. Let me know your thoughts.
  14. For the most part, fertile ferns are rare in the Mazon Creek flora. The only exception being Diplazites, of which ~1/2 of all specimens are fertile. This is my first non-Diplazites fertile fern. I really like the interplay between the white mineral deposits, the brown matrix, and the scattered pyrite crystals - a very artistic specimen I think. My best guess is that this is Cyathocarpus hemitelioides, but I am not positive. Close up of a fertile pinnule Close up of sterile pinnules at the base
  15. 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,
  16. bamontgomery

    Mystery Danville Trace Fossil

    Hi all. I found some pretty cool boulders of calcite littered with crinoid impressions in a public park in Danville, IL back in late August, but left everything until I got approval from their park department to remove them. I finally heard back last month, but didn't get around to going until today. I found a few interesting things that I'll post when they're cleaned up, but I probably won't even begin the process until Thursday. In the meantime I took a photo of a trace fossil that was sitting near the top of one of the specimens. I can identify most of the things in the pieces, but am
  17. minnbuckeye

    Fun in Oglesby.

    Late August found me traveling to Mazon Creek for a wonderful hunt. See @RandyB's topic, Mazon Creek 8-28-21. The trip allowed a little free time to slip off and explore the road cut in Oglesby, Illinois. This is a very fossiliferous exposure and was enjoyable to explore. The fact I found shark teeth and crinoids makes me think this was a combination of Pennsylvanian La Salle Limestone unit 3 and unit 4. Even though my poor photos do not show it well, the brachiopods are very nice. But unfortunately, identification has been difficult.
  18. connorp

    Mazon Creek - Cordaites or wood?

    The smaller specimen pictured opened this morning and reminded me of the larger specimen which I found earlier this year. They are very similar looking. My first thought was Cordaites borassifolius due to the linear striations, but the specimens are fragmentary and the preservation is not great so they could also just be indeterminate wood fragments. I don't think I've seen a Cordaites specimen in person before so I am not positive either way. Any thoughts are appreciated.
  19. connorp

    Mazon Creek Unknown Plant

    I collected this specimen last year but still can't decide on an ID, it's pretty fragmentary. Any thoughts are appreciated. @bigred97 @flipper559 @stats @Nimravis @deutscheben
  20. Since they are so common, I don't keep many coprolites unless I notice they have interesting inclusions. This is one of the more interesting inclusions I've found to date. It measures maybe 2mm in length. I believe it is the branchiopod Pemphilimnadiopsis ortoni (what a name!), and was hoping for a second opinion. @deutscheben, I know you've found some of these before. Any thoughts are appreciated.
  21. Jbenton

    Illinois tooth ID needed

    Hi I don’t believe this is yet fossilized, but need your help on an ID. From far northeast Illinois. Any idea?
  22. connorp

    Mazon Creek Rhacophyllum

    Here are two interesting Mazon Creek flora nodules that popped yesterday. I believe they are both assigned to Rhacophyllum. If so, I am excited, I have not come across this "genus" before. Rhacophyllum cornutum Rhacophyllum fucoideum I am pretty confident on the IDs but confirmation is always great. I am quite interested however in the second specimen. It appears that there is a root-like structure emanating from the central base. I cannot find many images of R. fucoideum online so I am not sure if this is significant or not. As usual, any though
  23. Hey all, I'm hoping that one of you has access to a page that's missing from the online pdf version of USGS Professional Paper 203: James Williams' 1943 STRATIGRAPHY AND FAUNA OF THE LOUISIANA LIMESTONE OF MISSOURI. The missing page is Plate 9. I have everything else, so if you happen to have access to a hardcopy version, just scan the plate and post it here, thanks so much!
  24. I_gotta_rock

    Our Great I-80 Road Trip

    Greetings, all! After exploring outcrops and spoils piles from Quebec down to Florida, we are heading west from Delaware to Crawford, Nebraska and back this fall. Planning to stop by Sylvania, OH and Clear Lake, IA. Probably Richmond, IN. Any other suggestions? Thoughts on these three?
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