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Found 542 results

  1. 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.
  2. 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?
  3. 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
  4. Leaf

    This was found by a friend near Muskogee Oklahoma. The area is Pennsylvanian. Any help on identification would be appreciated.
  5. Carboniferous Gastropod

    Found this piece in the same piece of limestone that my last questionable piece was in. It's a Gastropod for sure. It was split within two separate planes of rock. There wasn't any detail within the split, so I just glued the two pieces back together. I've found lots of gastropods in limestone, but they are usually really tiny. This one was a full size for once. Glued back together using Paraloid B-72. As close as I can say, this limestone is approximately 305 million years old. I've considered both Donaldina and Meekospira. Last Questionable Piece:
  6. Big clam?

    This thing is big, much bigger than clams and brachiopods I usually find. I haven’t attempted to remove it yet, because things this size usually break up when chipped out. I see shell material and some ridges in the steinkern. Excuse my clean hammer.
  7. 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.
  8. I am nearly sure the top piece is Metacoceras. The middle is a clam, but what species? Perhaps Astartella concentrica? The bottom, what is that thing? 6477/6478 show it in detail. I find these a lot. Are they brachiopods? Not shown, but there is a horn coral on the back of the piece in a cross section.
  9. Hey! I just made my first actual painting, and I decided to paint a Carboniferous (Pennsylvanian) swampland/forest. I’m really proud of it, and I would like to hear what you guys think!
  10. 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.
  11. Fenestella? Bryozoa of some type?

    Tonight I found a new limestone ledge sitting 6 inches from a stream water level. My father and I started hammering away at the shallow edges and removed a ton of interesting specimens. While there were some nice cephalopods, lots of brachiopods and clams, this piece caught my eye. I’ve read about Bryozoa and I’ve seen similar things on fossil plates. I believe I remember seeing pieces of them in limestone while digging, but never anything big. So, is it a Fenestella? Or something else? I’ve never found one worth showing. I saw a species list for it and it is very long.
  12. A few Pseudorthoceras

    Pseudorthoceras is a bit of a mystery locally for me still. They are probably the most common straight shelled cephalopod I find. I also found at least one Mooreoceras. From what I understand, Mooreoceras and Pseudorthoceras are both classified under the Pseudorthoceratidae Family
  13. 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!
  14. Mooreoceras sp.? or something else?

    I’ve been air scribing this piece out and I figured it was a Mooreoceras. However, the ridge going up the front is something I haven’t seen on this species. Is it just squashed a bit? It’s a pointed oval in shape. The length is nearly 3 inches.
  15. I have recently obtained this Pennsylvanian Fossil Fern - Schuylkill County. Leaves on both sides of the plate. I have read that some plants on slate can peel. Is that something that tends to happen with this material? If so, what would I use to prevent this from happening? Thanks
  16. stratigraphic framework of the Glenshaw

    link Martino, R. L., 2004, Sequence stratigraphy of the Glenshaw Formation(middle– late Pennsylvanian) in the central Appalachian basin, in :J. C. Pashin and R. A. Gastaldo, eds., Sequence stratigraphy,paleoclimate, and tectonics of coal-bearing strata: AAPG Studies in Geology 51, p. 1–28. size: about 6 Mb the emphasis is on sequence stratigraphy and (correlation of)paleosols: the need for a background of knowledge of these subjects lies in the gray area between "absolutely necessary" and "comes in handy"
  17. Brachiopod, but which one?

    By far the most detailed Brachiopod I’ve found to date. The top impression, which isn’t shown, appeared to have two larger bands running down the center. The small piece in attachment 3 was somewhat of a steinkern or impression below it. Scale line is 1cm. Photos taken with a DSL through a microscope. This came from eroded Limestone.
  18. Arizona sponge

    I found part of a sponge from the Pennsylvanian Naco Formation. The sponge is 5 cm in maximum width. The needle like structures average about 0.2 mm in diameter. Are the needle like structures part of a sponge body or part of the roots? Species? A cross section shows the needles radiate from the center. Photos: 1 top 2 bottom 3 cross section 4 detail
  19. Biological or geological?

    Found this interesting piece while clearing an erosion trench on my property. The texture on it is interesting but am not sure what I am seeing. The area is Pennsylvanian and located in southeast Oklahoma near Lake Wister. Any ideas?
  20. I am going to start adding some images of my favorite finds which I call Collection Pieces. Identifications range from maybe, probably to most likely. I've only started to seriously collect over the past year. I've spent a great deal of time studying and learning Geology, as a hobby. I am located in Western Pennsylvania. At first, a map of the area. Anything in bright yellow is the Glenshaw Formation. The Ames Limestone layer exists between the Glenshaw and the Casselman Formations, which is the Orange color on the map. I have yet to explore the Ames Limestone, so I've only found fossils that exist in the marine zones below the Ames. Second and Third, are Metacoceras. The Fourth photo is of another Metacoceras. The id is slightly less likely as I can only see a few of the rounded spines. But I'm pretty sure it is one. Coming up next is a Mooreoceras that I found just this past weekend. I maintain everything on a website, that is listed in my profile. Thank you! Clint
  21. Brachiopod?

    This one showed up after a rock split. The steinkern was really shiny and smooth. Usually the shell is hard to save, but I was able to when air chiseling away at this one. There are noticeable grooves on one side.
  22. Lost and Found

    As I was cataloging specimens collected at Lake Jacksboro I came across this sweet little fossil that I found there last February. The site is Pennsylvanian but this beautiful little oyster is NOT. And luckily I am experienced enough to recognize it was out of place. But not all collectors are... Please, please, please be careful and try not to drop stuff out of your pockets, bags or bins from previous collecting sites. Oh, and if anyone recognizes or remembers this little gem let me know. I’ll pop it in the mail to you. PS it is about 17mm wide
  23. Pennsylvanian Clam?

    Found this one in the eroded limestone. It came out in two pieces. I believe it to be a clam. You can see it dimensionaly through the top. I'm still going to clean it up further.
  24. The Bad Bush

    Here is a 300lb slab of rock I chisled out of my back yard that has a bush on it from the carboniferous this is in Lincoln County WV, Iron pyrite and quarts sandstone medium sizes grains matrix
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