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  1. Today, I stopped by the DuPage County Fairgrounds fairgrounds for the 2024 ESCONI (Earth Science Club of Northern Illinois) Show. The show runs today and tomorrow and I have to say, it was really busy. The show is great for anyone interested in rocks, minerals or fossils. There were a number of dealers present as well as other things that are managed by ESCONI, such as Silent Auctions, Live Auctions, Kids Corner, Book sales, Demonstrations, etc. Book sales- Kids Corner Silent Auctions- Live Auctions- Demonstrations/ Give always- Displays-
  2. Hi all! Got a quick question for the Mazon Creek veterans - I've only been collecting for this season and last, but I've been out there 15 times or so now. On opening weekend I took my 17 y/o daughter and her friend, the girls and I hit a spot that was loaded w concretions. I did the 10 day soak and they are now going through 10 freeze/thaw cycles. I've never had concretions with this color - all the ones were rust colored, the outer layer and the inner concretions. These were rust colored also, but the outer shell flaked off and now they look like this. Has anyone that collected a lot of concretions noticed any patterns in the type of concretions that have better success rate? Basically I'm asking which ones to get my hopes up for -- haha! Last year I had a lot of nice shapes, and very little success. Heres a pic of one of them and a few of the haul from our trip and a pair of happy kids!
  3. Patrick K.

    Mazon Creek Finds - Tully?

    Hello all! I’ve had the chance to get out a few times this year, collecting has been good! So far 3 trips, my daughter has a Tully, a friend found a half of one (hopefully posts it!) and we’ve had numerous random open fossils of various species. And LOTS of full concretions to freeze-thaw open. Here’s a few I was hoping to get confirmation on - I found some good clues in Jack Wittry’s book. 1) My daughter’s Tully - found open, covered in mineral deposits. 2) A large shrimp - weathered and probably open for a long time 3) Maybe an Orbiculoidea sp.? Pretty weathered but looks close to the books Lastly maybe an indeterminate discoidal cephalopod? I only have half of the fossil but it’s quite a deep concretion & shell shaped. Thanks for stopping by! Pat
  4. I have 2 Pennsylvanian fossils from Mazon Creek. They have previously been identified as crenulopteris and lobatopteris lamuriana. Presumably the crenulopteris specimen is a seed fern; however, I am unsure about the lobatopteris lamuriana specimen. Presumably the lobatopteris was once labeled as a pecopteris so is it still considered to be a seed fern? Any information or suggestions would be greatly appreciated. The first image is of the lobatopteris specimen, The next image is of the crenulopteris specimen.
  5. @stats @Mark Kmiecik @RCFossils @Peat Burns @connorp @deutscheben@fiddlehead I had been in contact with a friend (Bob) of mine that I met over 30 years ago. I met him through my fossil mentor Walter. Bob and Walter would collect in the 70’s and 80’s with many well know collectors, including Francis Tully. The would also bring fossils to the Field Museum so Dr. Eugene Richardson and others, could ID some of their finds. In our talks over the last several months, he had spoke about selling his collection and I advised him that I would be interested. We came to an agreement on price and today I stopped by his house to get the collection. It contained an unbelievable amount of fossils, all prom Pit 11, with the exception of a couple that he collected at Pit 14, a place he only visited one time. I am going to post just a few pics of some of the fossils in his collection that he amassed over 30+ years of collecting. I have only looked at a small sample of what I purchased. Without further ado, here are a few of the fossils. A few flora pieces to begin with. As you can see from this sample, many of these are how he found them and they were never cleaned. Now to some of the fauna. This first piece is shown in the 1979 Matthew Nitecki book- Mazon Creek Fossils. This Titanoceras so. Cephalopod is shown on page 337, figure 1a - Lateral view of ventrolateral portion of body chamber. This was in the chapter “Middle Pennsylvanian Cephalopoda of Mazon Creek Fauna, written by W. Bruce Saunders and Dr. Eugene S. Richardson, Jr. Bob advised me that he found this piece at Pit 14 near a chiton that he also found there. Here is one of my favorites, Bandringa rayi. This shark was loaned to the Field Museum and Dr. Rainer Zangrel took a look at it. He stated that this specimen showed the mouth (white dot area). Here are a couple Tully pieces. The below one is cool because it shows the claw/mouth, folded over on the body. This looks like a spider. Here is a scorpion. A couple winged insects. Continued on next post.
  6. Patrick K.

    Mazon Creek ID Request

    Hello all - I hope my fellow hunters were able to avoid the tics and enjoy the unseasonably warm weather and enjoy a great opening weekend! We came away with one FULL 5 gallon bucket of mostly unopened concretions - with a possible Tully and some nice plant material among the open concretions. Would anyone care to take a stab at this one that came out of pit 11? Thanks! Patrick
  7. TheRocksWillShoutHisGlory

    Mazon creek opening weekend

    Made it out to Mazonia for the opening day this year, and it was the first time I ever filled a bucket. Went back with my 4 and 5 year old and they found another 20 concretions themselves. A little chilly the first day but it kept the bugs dormant, great weather on the return trip. We got a nice open Alethopteris half as well.
  8. Sauropod19

    Mazon Pit 11

    Hello, it’s been awhile! I’ve been opening up some Mazon Pit 11 stuff and came across this thing. I try to keep myself pretty grounded when it comes to Mazon stuff, because I’m horribly bad at ID’ing anything in a concretion. That said, any chance this is an annelid worm? Thank you as always!
  9. Today I went through a few small containers of concretions that were collected in the late 70’s / early 80’s. These were not collected by me, these are from a collection that I purchased last year from a friend. These were in multiple freezer/ thaw cycles. A lot popped today, mainly Essexella asherae and possibly another species. A decent Tully Monster also opened- it has the neck, transverse bar with eyes and a nice body. A couple shrimp, worms and a leech. Annularia- A large fern concretion that did not open very well. A few other pieces of flora. Back to more freeze and thaw, I have a lot more to go.
  10. 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 section of Calamites (probably C. cisti) encrusted by a number microconchids. I always enjoy finding concretions with associations of different species. Last for now is a specimen of the rare seed fern Callipteridium neuropteroides with great coloration.
  11. For those of you in the Chicago area, ESCONI (Earth Science Club of Northern Illinois) is having their annual show March 16-17 this year. More details on their website: ESCONI 2024 Gem, Mineral, and Fossil Show! March 16th and 17th, 2024 #gem #mineral #fossil #show #2024 #fossils #minerals #gems - Earth Science Club of Northern Illinois - ESCONI
  12. Josher

    Mazon Creek Finds

    Kids and I went out to Mazonia Braidwood last spring. Been freezing/thawing nodules and found one that has us stumped. Would appreciate some expert input! My son asked me to also post the other one to see what you guys think. Thanks in advance!
  13. Mochaccino

    Mazon Creek Millipede? Worm?

    Hello, Could I get an ID on this mazon creek unknown? It has pretty high relief and strong segmentation with makes me think arthropod like a millipede, but I don't see any legs so maybe it's an annelid worm or something.
  14. hey! brand new to the forum. tagged mazon creek because I think that's the most popular spot in IL but I'm aware it's not open to the public at the moment. does anyone know of spots that are open to the public in the winter? anywhere in IL? otherwise, any connections with landowners have access to fossil beds? nowhere with disputed ownership/right on the border between public and private, not looking to put myself and my friends in an unsafe situation especially during deer season. I would really appreciate some input! don't need anything special, just wanna go poking around in the dirt with my friends. :)
  15. Here is a few of my Lucky finds for 2019 Mazon Creek fossil collecting season. I will try to keep adding to it as time and posting ability permits. My wife and I collected 14 times in 2019 at 4 different areas. We had a great time, met many great people, learned a great deal, on our adventures. Anyhow, I'll give this a try, and apologize in advance for the less than perfect photos. Phil
  16. Today I took a quick ride to the small suburb of Evanston, right out side of Chicago. This is the home of Dave's Down To Earth Rock Shop and Prehistoric Life Museum. If memory serves me correct, Dave's has been in Evanston for the past 40+ years and it is a family owned business. Dave's recently moved to it's new home on Main Street and if you every get a chance to be in the Chicago area, this is a must see- you will definitely not be disappointed. From the outside, you would not believe that this store has a museum that houses such a great variety of fossil life and the most extensive collection / variety of Mazon Creek fauna that I have ever seen, including 3 Holotype Mazon Creek fossils named after Dave and his parents who found them. Here are some overview pictures of the Museum. Here are some overview of the various displays.
  17. Rockwood

    Mazon Creek

    This was found in the southern unit of the Mazonia Wildlife Management area in northern Illinois. Ma nature had already opened it, so it may be in kind of rough shape. Is there enough here to identify it ?
  18. apple3.14

    Unknown mazon creek worm

    This mazon creek pit 11 concretion opened a couple days ago and looks kind of like a ribbon worm but the preservation is different than examples I've been able to find. Any insight would be appreciated thanks. Also my word suggestion prompted me to say Happy Thanksgiving!
  19. Saj

    Mazon Creek Fossil

    Hi - I was recently given some concretions from Mazon Creek in Grundy County, IL. to open. I have been able to mostly identify some fauna specimens using the Mazon Creek books. However, not able to identify this one using the book or searches on the internet. Looks like a gold fish to me. Any ideas?
  20. 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. First are three that I believe to be Essexella asherae, all very different looking though. The first is quite large, 7.5 cm across, and I love the red color. Next are two Achistrum sp., the first is my favorite fossil I have found from Mazon Creek thus far- curled up neatly in the nodule and nearly complete. The second is partially pyritized- I couldn't find any similar examples online, so it seems fairly unusual. Here are a few Mazonomya mazonensis, the top one is adorably petite- the shell is less than 1 cm across. This is small impression fossil of some bark- I'm still learning to ID the Pennsylanian flora, so I'm not sure exactly what this would be called. This appears to be a trace fossil, possibly a tunnel of some sort? I believe this is a coprolite. Finally, a few incomplete worms. The first I have identified at the tail end of Didontogaster, while the second nodule seems to have a few thin worm-like fossils preserved- perhaps Flabelligeridae sp.?
  21. Today was a nice “Mazon Creek Fossil Day” at the Coal City Library presented by ESCONI (Earth Science Club of Northern Illinois). The library. There were about 45 people in attendance which included some FF members. There were a number of displays that contained Mazon Creek fossils and you were able to purchase the various MC books by Jack Witry @fiddlehead. Fossils- Some of the attendees- (L) Rich @stats and Marty. Continued on next post.
  22. This is the Mazon Monday post from the ESCONI website this morning. There were numerous Fossil Forum users.... @bigred97 @flipper559 @RMAA. I know there were others there. Please add yourselves. ---------------------------------------------------------- The Fall 2023 Braceville Field Trip is in the books... is is that on the web? It was a enjoyable, but somewhat wet, weekend. We had rain at the very end of the day on Saturday and most of Sunday. The mud was not too bad. The dry conditions this late summer probably left the shale in a state where it could soak up a good bit of the water. We had visitors from out of state both days. Alan Keith was very generous and passed out fossils from Texas and Oklahoma. The fossil dump was as good as ever. We had quite a few buckets on both days. Unfortunately, not as many people stuck around until 11:30 on Sunday, as we had a steady rain for most of the morning. Material was supplied by Ralph Jewell, @Nimravis Andrew Young, Rich Holm, Alan Keith, and others. Thank you for your contributions! Good morning! Here is a little introductory video on the walk in on Sunday morning. It rained quite a bit Saturday night, so the shale was sticky in places. Here is a Mazon Monday post about the history of the Braceville spoil pile. It was called worm hill by the old timers. Fossil Dump on Saturday Good luck horseshoe found by Chris Berg @bigred97. Huntin' for fossils! Smiles from the pile! Mud! Poison ivy! Steam from the hill when the sun came out on Sunday afternoon Open fossils found! Say goodbye to another successful field trip!
  23. Sauropod19

    Mazon Pit 4 concretion

    Hello! I had the privilege of joining ESCONI to Mazon’s Pit 4 yesterday and came across this concretion. There’s a very good chance it’s nothing, but I thought the 3D shape might be peculiar. The concretion is about 1.5 cm wide in total. Thank you for looking!
  24. trilobites_are_awesome

    Possilble mazon creek insect?

    Is this a Mazon creek insect? It has these strange lines on the front. thanks for your time Trilobites_are_awesome.
  25. I have a lot of unopened Mazon Creek concretions and though I do put some out in the winter for the Freeze / Thaw process, the vast majority, especially the larger ones do not open. So to dwindle my concretions, I have no problem whacking them with a hammer, and that is what I was doing today. As we all know, this is not the best way to do it since it can damage a nice specimen, but I take my chances. I always picked up any concretion that looked promising and never passed up larger ones. This all depends on the are that you are collecting, concretions from Pit 11 are never super large, but Pit 4 always produced larger ones - see below. Though these are large, they are by no means my largest. The vast majority of the time there is nothing inside, like the one below. Other ones produce something nice, like this Alethopteris that I cracked open today. Cleaned up_ A couple of my other finds from today, nothing spectacular, but is nice to get rid of the dud ones. Neuropteris Annularia Annularia, Neuropteris and Bark Asterophyllites Bark Essexella asherae Jellyfish
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