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Found 500 results

  1. Rock or fossil

    Hey guys! Total newb here, I was hunting for some Pennsylvanian brachs when I found these strange looking circular halves.(they don’t go together) Could they be fossils or are they just plain old rocks? My vote is just plain rocks.
  2. I knew it was going to snow today, so I thought that I would go out yesterday to a Pennsylvanian roadcut that has matrix from the Bond Formation exposed near Oglesby, Illinois. I did not spend much time there, put it was nice to be out. The area still has a lot of snow cover because it sits in the shade most of the day and there will even have more since we are getting 2-3”. Besides some brachiopods that I found, I also found this Cladodont Tooth that was on the bottom of a piece that I picked up. Though not complete, I still like it. Thanks to @deutscheben and @Peat Burns for the ID.
  3. Last fall the state of Illinois purchased over 2,600 acres near the town of Oglesby from Lone Star Industries, including former quarries, with the goal of making it into state park land. It is near the site of the popular Starved Rock and Matthiessen State Parks, and the state said it would take a few years to assess and prepare the site before it would be open to the public. http://www.newstrib.com/free/matthiessen-and-starved-rock-just-got-a-lot-bigger-video/article_203e37f8-d89a-11e8-9a7e-e72ef52ec0d6.html The quarry exposes the highly fossiliferous LaSalle Limestone, as well as a black shale that produces fossils too, so a number of scientists and fossil enthusiasts proposed that a portion of the new protected land should be made into a public fossil park- here is their proposal: https://www.esconi.org/files/proposal-for-a-fossil-park-at-the-former-lone-star-quarry-site-final.pdf Now a state legislator representing the area has introduced a bill to do just that- the synopsis reads: "Amends the Department of Natural Resources (Conservation) Law of the Civil Administrative Code of Illinois. Provides that the Department of Natural Resources shall designate a portion of the former Lone Star Quarry site near Oglesby as a fossil park to allow for the collection of fossils. Provides that Department by rule may designate which portion of the land shall constitute the fossil park and any requirements for admittance or permits for entry into the fossil park. Provides that the Department may collaborate with any State university to establish educational opportunities or events at the fossil park." Hopefully this will become a law and this park can join the famous Mazonia-Braidwood as Illinois's second park for fossil collecting. If you are an Illinois resident, please contact your state representative and tell them to sign on as co-sponsor or support this bill!
  4. Plate of armor?

    Hey guys! I was in one of my favorite Pennsylvanian spots in East Kansas finding the usual brachs and bryos when all of a sudden this popped out at me. Any ideas as to what it might be? I’ve never seen something like this in my area before. Thanks.
  5. Hi all, I recently made a trip out to Wilson Clay Pit in Brownwood, Texas with my local paleo society. I've found several recognizable things, and a few I need some help identifying. I apologize in advance to @erose who gave me an idea on one bivalve that I failed to write down, and thereafter promptly forgot! I think the tooth is Petalodus sp., just need confirmation. I'd love a genus for the clams, and I have no idea at all what the small plate-shaped fossil is. Thanks!
  6. Recently completed a lengthy set of walkabouts in the lower Pennsylvanian. I have a lot that I can pseudo-identify and am comfortable leaving them alone for now. OTH, I am hopeful someone with the skills will provide some helpful nudges in assigning more accurate names to the following: I believe this is a coral. This is about 4" tall and 3.5" wide Zoom in I'm calling it a snail but I know that is not correct. Max length is 1.5" And then these mystery spine-like objects on a sort of mash plate. It is hard to tell but the long intermittent one, swooping from lower left to upper right, maybe indeed be a single long strand 3" long
  7. I decided to take the day off of work today because it was supposed to be in the mid 40's and I figured I could whack open some Mazon Creek concretions. I was very nice out, but I figured that my time would be better spent cutting down matrix on a number of pieces that I collected recently from 3 different time periods (Pennsylvanian, Mississippian and Ordovician). I did not get everything cut down, but it was a good start, here is the aftermath. Pennsylvanian- Sometimes things just pop out of the matrix like the two beauties Ordovician- Mississippian-
  8. Ok, what do you guys think of these?

    I’ve got some ID requests that need to be solved. First (#1) an old friend that needs to be re-evaluated I think. I know this to be solidly mid to late Cambrian in age which leads me to believe its some kind of ichofossil perhaps Cruziana. What are your thoughts?
  9. My first fossil and I'm already stumped - hoping someone can point me in the right direction here! My husband is a geologist and brought a piece of shale home with a fossil poking out. I've been chipping away inexpertly, and can't figure out what I'm looking at. This was found outside Birmingham Alabama, in the Mary Lee Formation, near the Pratt Seam. My husband tells me the area was freshwater swamp during the Pennsylvanian Period. What am I looking at here? I know it shouldn't be soft tissue, but it doesn't seem to be plant, shell, or bone, either! Please set me straight! I hope these pictures are ok - as you can see, I'm not done cleaning it... but I'm trying to be cautious since I'm learning as I go. Also possibly relevant: the shale was riddled with dark colored fossil plants. My husband said they were carbon - they nearly disintegrate on contact. I've included a picture of those, too. Here are pictures of the plant fossils in the rock that were exposed when we broke it apart. The mystery fossil is on the top of the left rock. Thank you all!
  10. I never cease to be amazed by the crazy things I find while stumbling around in the great outdoors like this odd remains of a crinoid. Mother Nature keeps me endlessly entertained. The rock has shells, bryozoa and other TBD's. The rock the specimen is in also just really, really light for its size and very porous in appearance. Lots of voids, some with very tiny shells inside. this seeming spiral gastropod is probably 2mm long and hiding in a void. not the best pic as taken indoors with lighting at night...but I hope you get the idea.
  11. Greetings. I chanced upon this in the way out yonder in a Pennsylvanian formation while out on a hike...and wondered to myself 'Self, is this a brachiopod with a quartz crystal lophophore or a brachiopod with some quartz crystals in it'. Time to ask the pros or those in the know...
  12. Conodonts beside an unidentified item

    Can someone help me identify the item that is with these two conodonts? My guess is a fish scale. This is from the Stark Shale, Dennis Formation, Kansas City Group. The conodonts are 2mm or so and the specimen is 7mm. I am intrigued by the surface of the "shell" which is a bit crab-like (I'm not saying I think it is crab, but that the item's shell has that kind of texture). I've included pictures of both the item and its external mold on the other half of the split shale. Let me know what you think. Russ
  13. On a short schedule for searching so it was a mad dash. I have very few ways to easily reach the Pennsylvanian Formations. Ordovician-Silurian-Devonian-Mississippian no problem. Anyway, I've found some interesting ferns in the Pennsylvanian Gobbler and wanted to see what I could find in another location about 3 miles as the crow flies away. About 1.5 miles into the site and a fairly productive morning for an initial search. Not the best of specimens but holds promise. Found this interesting brachiopod panel presenting itself with some glints. It was easily opened up by dragging my long chisel into it Some of the brachs. Not cleaned up yet.. A brach hash plate and the layer the brachs deposited on showing trace fossil depressions. Not cleaned yet A couple of phylloid algal limestone specimens
  14. On Saturday I posted pics from a Fossil Hunting Trip that I did the day before at a road cut in Ogelsby, Illinois.This area contains fossils from this formation- La Salle Limestone member of the Bond Formation (Missourian, Pennsylvanian) Unit 3. On of the pics that I posted was of something that I did not recognize and as always happens on the forum, someone responds with an identification. FF Member @Archie (Sam) stated that it was a Peripristis shark tooth and later stated that it was the lingual view. I then did some searching on the internet for pictures of this type of tooth and Sam was right on. During my search, I also came across an article titled "Pennsylvanian (Late Carboniferous) chondrichtyans from the LaSalle limestone member (Bond Formation) of Illinois, USA. This paper was written by Dr. Stephen L. Brusatte , who is a Chancellor's Fellow in Vertebrate Paleontology at the University of Edinburgh- (He grew up in Ottawa, IL. a town very close to Oglesby). Dr. Brusatte is an American Paleontologist and Evolutionary Biologist who specializes in the anatomy and evolution of dinosaurs. I found his e-mail address and late last night I e-mailed him pictures of this tooth and he responded early this morning and confirmed what Sam had stated. He further stated that "shark teeth are quite rare in the Pennsylvanian rocks of the Oglesby area". Sam, thanks again for helping me out with this ID.
  15. Though I just visited this site a few days ago and posted a trip report of that session, I decided to go back yesterday for three reasons: #1- My lower back was back to being 100%, that's a good thing. #2- It was supposed to snow today, and it is. I think the Olgesby area might have about 3" on the ground now and you can't collect on a steep scree field covered in snow. And #3, I just like collecting fossils. This area contains fossils from this formation- La Salle Limestone member of the Bond Formation (Missourian, Pennsylvanian) Unit 3. I am pretty sure that a portion of the Gray Shale (Unit 2) also came down. So yesterday I headed off to the road cut to collect in the balmy winter weather of Illinois. I was alone except for the Bald Eagles that were soaring high over head, from time to time you could hear their screech. With my back being a 100% I was able to maneuver along the loose rocks without a problem and was able to spend some time looking a the rocks a found a number of beautiful plates and large loose brachiopods. This site will continue to produce as the weathering process takes affect. As I stated in my last post, if you are ever in that area, you should stop and take a look, there are some beautiful fossils there. Here are some pics that I took in the field and I will end with pics of some of the same fossils, but hopefully in better light. Here a chunks of rocks that are just loaded with brachiopods. Composita argentia- I did find a number of fossils filled with crystals, this one is a favorite. Bryozoan- CONTINUED---------Next Post
  16. On my holiday trip from Ohio back to Minnesota, I thought of taking some time and searching the Braidwood area for fossils. I overnighted in the area, jumped out of bed at the crack of dawn with anticipation and headed to the Mazonia-Braidwood State Fish and Wildlife Area. Unfortunately, the park was gated off and access was only allowed for hunting (animal) purposes. On top of this, light snow began to fall making it hard to see anything on the ground. I did manage to look under some trees outside of the gated area and found what looked like a few nodules. It is common knowledge to open these up with a freeze thaw technique, but my hammer kept calling. So after a few whacks, this is what I saw inside. Can anyone identify anything in these pictures?? I have extreme difficulty seeing what many do when looking at open nodules. So an expert eye is needed. Mike
  17. Here are two interesting Pennsylvanian fossils that I bought at the Flagg Gem and Mineral Show in Mesa, Arizona (~4.5 inches wide) from the Apex Mine near St. George, Utah hosted in the Callville Limestone. A Chatetes sp. sponge is coated in azurite and malachite. Syringopora sp. coral molds are in goethite with significant germanium and gallium values. The goethite replaced the limestone. See this USGS article about the mine: https://pubs.usgs.gov/bul/1577/report.pdf
  18. A daylong venture into the back canyons of the Sacramento Mountains to look for minerals and fossils. From the trailhead & back was just under 9 miles and lots of rock scrambling through Ordovician-Pennsylvanian formations. A dryfall requiring a climb around Overhang with rippled sandstone floor having iron concretions A view back down hill partway to summit Horn corals Maybe coral?
  19. Arkansas and NW Missouri

    Took a road trip today and although it was only 28 degrees found a few interesting items. Any help identifying, even a rough direction to look would be appreciated. 1 and 2 were found at Beaver Lake in Arkansas. If I read the map correctly, which is always iffy, they should be Ordovician in age. Wondering if I should break into the squarish looking piece (#1) to see what it contains. 3 and 4 were found just across the Missouri line from Grove Oklahoma. I believe the area is Late Pennsylvanian. The limestone (3) looks like it contains traces of water worn chrinoids(?). #4 May just be a water worn rock but maybe a man made fetish? The hole goes all the way through and would make a great hanging piece.
  20. Within the last 7 days I collected fossils from following time periods- Cambrian, Ordovician, Silurian and Mississippian. I figured that I would go out today for a little road side Pennsylvanian collecting on IL 71. I did not find much, but it was fun and cold, about 30 degrees and a light flurries. Pics of the road cut- My finds- The most abundant fossil at this site is the brachiopod Composita argentia. Here are a couple of what I believe are Juresania nebrascensis. Here is a small crinoid hash plate. All cleaned up-
  21. Fern Prep

    My dad and I collected this large fern several months ago in PA and have since contemplated how best to prepare it in order for the fossil to be visible. When the material is dampened, the fossil is visible; but, when the shale dries, the fern kinda disappears back into the material. We read somewhere that coating the material in Butvar may darken the material and may make the fossil more visible; however, we would love to hear the thoughts and suggestions on this group. Any help is greatly appreciated.
  22. Montana, a shortish faunal review

    EASTON W.H.Easton: Carboniferous Faunas and Formation of Central Montana A study of the stratigraphic and ecologic associations and significance of fossils from the Big Snowy group of Mississippian and Pennsylvanian rocks Geological suvey Proferssional paper n.348/1962 Number of pages 157 PLATE two: stratidistribplate-2.pdf PLATE ONE(correlation/logs) plate-1.pdf to be used with some care with regard to (at least)the taxonomic aspects
  23. Mazon Creek fossil plants: Part 1

    Hi guys! Long story short, a rather large collection of Mazon Creek fossils has been donated to my university. I thought I'd share some pictures of the collection and confirm some preliminary identifications. There are a lot of specimens so I will probably split this into two posts. Annularia radiata Annularia stellata A whole bunch of Annularia stellata?
  24. Here is a sample of a fern and Cordaites along the bottom (my guess) I've been finding. Pennsylvanian formation in an area with igneous intrusions. I would enjoy being able to identify and label different fern types in the future so any help naming these now and a good source for learning more would be my ideal goal. Lastly; what induces the coloration? Is it some form of pyritization? High iron mineral content of water and ground it grew in at the time? I have additional specimen photos that appear to be of other types but I just realized my file sizes are limiting how many I can post at a time...need to learn how to do better in future posts.
  25. Fossil or geological?

    A friend of mine recently brought some property southwest of Brownwood, Texas. The land is largely Pennsylvanian. The formation is Garner, which he says the description says it is marine with megafauna. He sent me these pics (below) this morning. He found this last week. He said it was just laying on the ground and didn’t see the source of it nearby. At first I thought it looked like some weird type of wood I had never seen before, but now I’m wondering if it could be geological. I have requested an end view, side and back side pics of it. He won’t be able to get them till this evening though. I think it’s pretty cool looking whatever it is. I appreciate your thoughts and comments on it.