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  1. There is an isolated exposure of the Morrison formation nearby the area I have visited to hunt fossils the last few weeks. The shape is an elongated oval and measures 1.15 km wide X 3.75km long. This image is a small section of it. My question is this: Would it be worth exploring, scouting, hiking this area for invertebrate fossils? It is on BLM public land but keep in mind that vertebrate fossils are strictly off limits for collecting. The only reason I would even consider visiting it would be to hunt for invertebrate or plant fossils. The majority of the area surrounding this "island" of Morrison formation is Cretaceous period with the Juana Lopez Member of the Mancos Shale where I'm finding 4 species of ammonites. In my mind the old adage : when on a fox hunt, don't stop to chase rabbits...seems to apply to my question and for that reason I have yet to visit the Morrison formation spot. This case the fox is Ammonites and the Rabbits are dino bones, teeth, etc. It could be anxiety causing at worst and finding some nice invertebrate fossils at best. The anxiety being walking right past exposed bones, carnivore teeth, etc... which I wouldn't touch nor even photograph. The temptation to share would be another facet of the anxiety. Like - "Wow! I found Allosaurus teeth this weekend at ________ down in the Utah desert!" Wiki says this about the Morrison fm fossil content : Along the rivers, there were fish, frogs, salamanders, lizards, crocodiles, turtles, pterosaurs, crayfish, clams, and mammaliforms. The dinosaurs were most likely riparian, as well. Hundreds of dinosaur fossils have been discovered, such as Allosaurus, Ceratosaurus, Torvosaurus, Saurophaganax, Camptosaurus, Ornitholestes and several stegosaur species. A satellite view of a section of this Morrison fm "island"... The Junipers are probably 10 to 15 feet tall and a similar diameter.
  2. I had a quick question about mudstone. Is mudstone fissile and akin to shale, or is it more "clumpy/grainy" like sandstone? I've always had difficulty understanding the difference between sandstone, siltstone, mudstone, and shale. Thanks!
  3. The fossil hunter: Bill Neville’s spirited search for relics from the Champlain Sea By Andrew Duffy, Ottawa Citizen, July 6, 2023 Yours, Paul H.
  4. MudstoneMullusk

    Vertebrate or Pseudofossil

    Hi all. I was was hoping to get help with this one from the community. It was found in-stream near an outcropping of Pittsburg Bluff in Clatsop County, Oregon, and downstream of some Astoria Formation, both marine sediments. I have found mollusks and arthropods in the same collecting area, usually in very hard concretions. To my knowledge no marine vertebrate fossils have been found within the Pittsburg Bluff Group so if it is vertebrate I'm thinking it came down from the Astoria Formation southwest of the area. It looks and feels like bone, and is extremely porous (tongue sticks). Or it may just be a pseudofossil. Either way, thank you for the help.
  5. Pottsville Formation, Alabama I would like to peek under the mud on the specimen in the first pic to determine if it is a compression fossil. This film on this particular sample seems brittle so I have to be careful. I can see pigmentation under some of the mud - that is where I want to work. Ideas? I hope I’m using these terms (carbon film, compression fossil) properly. I included other pics of other specimens that have carbon film or some type of mineral imprint (not sure what the term for this is) that I am to cleaning, sorting and comparing to potential compression fossils from Carboniferous. I was initially ignoring the specimens that look like pattern could be iron staining- thinking all were Liesegang rings, but I’m not sure that explains all of them.
  6. TomC

    mudstone with iron?

    I am glad I found this forum. I've always been interested about the origins of rocks. Always amazed how something can be turned into stone given time and pressure. Note my most recent find. This odd shaped stone was unlike any others in the stream and was found in New York State, in Hudson Valley, in the Shawangunk Kill. I took it home (really heavy) and pressure washed it. The side that was down is grey and the topside was green. I assumed the green is algae growth but also thought the pressure wash would take it off. The color seems to be embedded. Likley due to the seemingly porous nature of the grey areas. I am pretty sure the gray part is clay of some sort turned into stone. I was curious about the ironlike outcrops. Could that be parts of trees, limbs or branches that have also turned to stone? Thank you for helping me to identify. ps How did I do on the photos?
  7. Irongiant97

    Various fossils/possible fossils

    Various fossils/possibly contain fossils. From the Coleraine formation of northern Minnesota, mostly ironstone, I think, but one is in mudstone.
  8. From the album: Lando’s Fossil Collection

    Ammonoid in mudstone collected from Devonian Foreknobs formation sediments of the Jefferson National Forest near New Castle, VA.

    © Lando_Cal_4tw

  9. Vounassafossilhunter

    Is this a fossil?

    Hello to all users! I found this little rock fragment (mudstone from the Tethys ocean floor I think) in a geosite at the Kozani-Grevena Geopark in greece .....I think that there is a fossil on it. Is it or not? And if yes what species is it? (Echinoderm maybe?) Thank you for your time!
  10. Hi everyone, I am new to this forum and have been loving it. I found a very fragile ammolite preserved in mudstone (I believe) and I want to seal it to preserve it and prevent it from falling apart. What can I use? Can resin/epoxy be used?
  11. patrick plesiosaurus

    Coprolite, Poor belemnite or poor vertebrae???

    I found this on the port mulgrave coast of yorkshire. It is Jurassic What could it be?? 19cm long and 2.5cm across Patrick
  12. patrick plesiosaurus

    unknown fossil ballagan formation

    Unknown fossils, they were found in the ballagan formation in southern Scotland, it is in mudstone, it shows fine laminations on the side. I do not think they are flute casts as they seam to have something infilling them such as the "creature" They will be carboniferous.
  13. patrick plesiosaurus

    unknown ballagan formation fossils

    Unknown fossils in mudstone from the ballagan formation Southern Scotland. I do not think they are flute casts as they seam to be infilled with the "creature". Carboniferous.
  14. Alongside some great ammonites I found these three strange things amongst the Jurassic Whitby Mudstone, none of which I recognise. Any help is much appreciated.
  15. This is a shot of a conglomeration of fossils in mudstone from the Verde Formation of central Arizona. This formation is a graben of jumbled types -- sandstone, limestone, mudstone, basalt, etc. These were in layers along a dry streambed. Any assistance with what they are would be appreciated. I'm assuming they are Pennsylvanian period, given the lack of crinoids. Locally, the redwall limestone is Mississippian, and contains abundant crinoids. The Martin limestones are Devonian, and have few fossils. I assume the pictured fossils are more recent than either of these. I'm especially curious about the items a few inches below my index finger that look like cross-sections of bone -- hollow with webbing inside. Thanks for any help you can offer!
  16. I found this in Eastern Colorado between Denver and Ft Morgan I thought it was mudstone, and had a lapidary cut it so I could see a cross section wondering if it could possibly be coprolite this piece is 5x4x4 inches -12x10x10 cm and if it doesn't show well in the images, it is twisted in appearance
  17. Scarletfemale

    Mudstones?

    Hello all- I live in NC, the far Western part, but spend a lot of time in TN, at a man-made lake that was constructed as part of the TVA project, beginning in the 30s. The rocks and scenery around there have been stirred up and relocated with the construction of the lake, so it’s kind of difficult to say what ought to be where. That said, they consist mostly of rather uninteresting dolomite and quartzite in the forested areas, and then huge beach expanses of orange-tan to red to purple and even bluish clay-type slate or shale material that has hardened in spots to near-rock consistency. There are beautiful agates to be found in some banks of red clay, however, and there are also enormous, opaque, gray mudstones with intriguing shapes. I thought at first that the mudstones were some of the most boring-looking things I’d ever seen, with the utter lack of variation in their color, as if painted in dull, chalky gray, but that has changed. After attending several summers of lake recreation, I noticed that the rocks were becoming much more interesting, and paid more attention to them. It seemed that the mudstone was sloughing off of itself at a considerable rate, and that the materials that formed the center of the nodules were becoming exposed! The mudstone is gritty and slips off with repeated exposure to bioturbation, (I believe this is the correct term for tumbling by elements, no?), and as time passes, more and more fascinating things are turning up. Not all of the nodules contain a center item, but many do. Following a bit of research, I located this article: https://www.sciencedirect.com/science/article/abs/pii/0031018281900572 ...and some others that also describe fossils being found in the middle of such mudstone formations. What really surprised me was how identical to my setting the soils and rocks sounded in the article... Here are some photos of things that have come from the mudstones... Anyone have any thoughts on what these could be?
  18. Bob Saunders

    Brachiopods

    One from yesterday. What we call Michigan Devonian mud stone. I would like info on the large Brachiopod type, Mucrospirifer ? I do realize it is partially missing. I am not sure if sodium bicarbonate will clean up a lot of areas? Or how much it is worth doing. images 2-3 I call the bottom side, showing material under the holes. Thanks.
  19. Arizonadirtbag

    Trace fossils? Coral? Anemone? Worms?!?

    Hey there! This is my first post on The Fossil Forum. I don't have a lot of knowledge about fossils, but I sure do know how to find them. Hopefully these aren't too obvious and boring, but I'm incredibly curious anyway. I found these near Sheep Bridge north of Phoenix, Arizona. Here the Verde river has cut through deep layers of ancient lava, sandstone, mudstone, etc. I was exploring for crystals up on a steep hill along the river's canyon walls when I came across a whole lot of these things. They are very fragile and I didn't want to break apart some of the 2-3 foot wide boulders of them so as to preserve them for others to find. Anyway, my understanding is that this area was once a sea floor, so I'm assuming they are some type of coral, anemone or something similar. The fossils are composed mostly of the same sediment which encases them, so I suppose they must be trace fossils, but please correct me if I am wrong. Other not-so-filled-in ones even had crystals and other minerals lining the cavity. As well, I looked at a geological map of Arizona and the area I was exploring is composed of the following... Late to Middle Miocene Basaltic Rocks (8-16 Ma): Mostly dark, mesa-forming basalt deposited as lava flows. Pliocene to Middle Miocene Deposits (2-16 Ma): Moderately to strongly consolidated conglomerate and sandstone deposited in basins during and after late Tertiary faulting. Includes lesser amounts of mudstone, siltstone, limestone, and gypsum. There are a couple photos of some ball shaped objects which were very easy to knock apart from the surrounding stone. I have no idea what those could be. The rest of the photos are of the coral looking objects. Some of them, if still intact, were nearly 24 inches long, but I left those behind and only took smaller samples. Please note how the "head" of the corals appears to flare out and is larger than the rest of the stem. Finally, some of them appear to have a little node sticking out of the "head," but I suspect that may be due to weathering as these are very fragile fossils. Thank you all so much for your interest and help and I look forward to learning more!
  20. Does anyone have any tips or tricks for how to keep mudstone from cracking and delaminating as it dries out? I recently went to Clarkia in Idaho and came back with a few fossils, including a flower, wrapping them in newspaper and putting them in the fridge as was suggested. They are beginning to crack and delaminate. I was hoping someone could help me think of a way to keep them solid before the leaves are broken. Thank you.
  21. Hello everyone, I was able to make a run down to the Conasauga River trilobite hunting site yesterday that was suggested to me in another thread. I didn't have an overabundance of time, but within five minutes of arriving, I found the specimen in the attached photo. It's not perfect, but it's the first time I've ever found a fossil out in the wild. Thank you to everyone for pointing me in the right direction. Now, since my time was a bit limited, I collected a five gallon bucket of the mudstone found there to look through it later. Now, some pieces seem easier to split than others. I've read on here that some people will soak items like this in water for about 15 minutes before attempting to take it apart. Does that sound right? I just want to have a chance at finding something else and minimize the risk of ruining a fossil in my quest to find one. Thank you, -William
  22. Mary888

    Fish fossil identification

    Could you please identify these fish fossils?
  23. Paulie777

    Would this rock have fossils?

    This is a very large boulder and it is layered. I took off a few layers and found nothing. I was wondering how old this boulder is and should I keep digging into it. Thanks for your help in advance.
  24. davidcpowers

    Leptaena

    I collected this Leptaena brachiopod from the red brown mudstone resting three feet above the top of the first out crop of breccia limestone. The location is above the rest-stop on highway 89 S before Riceville Rd. The formation is the lower part of the Kibbey. Leptaena Brachiopods dominate along with three types of bryozoa and crinoids. Also found clams and a part of a plant fossil. The setting was once a lagoon.
  25. Hi everyone! For the last few months I have been finding lots of fossil imprints in mixed chert cobble on a artist residency/farm in Kingsbury, Texas near Seguin (in Guadeloupe county). They are digging up some of the cobble/gravel to line the roads and walkways on the farm, which means that everything gets spread out nicely! Plus there is the 'quarry' itself. The USGS map says that the area is Wilcox Group, undivided, and/or Willis Formation, and I am looking at mudstone, chert, a little bit of sandstone, gravel, some petrified wood. In terms of age I think it matches up with Eocene but could go back a little farther, especially since some stuff may have been deposited by a nearby creek. For Wilcox Group USGS says AGE_MINPhanerozoic - Cenozoic - Tertiary-Paleogene - Early-Eocene AGE_MAXPhanerozoic - Cenozoic - Tertiary-Paleogene - Late-Paleocene. I am using the two classic Texas references to ID general fossil type, Matthew's Texas Fossils and also Finsley's A Field Guide to Fossils of Texas, and also deeply perusing thefossilforum.com site. I think the below is a stromatolite, then the rest are pelecypod impressions of various types. Except for that last photo in this post, I am guessing that is just a sideways cross section. I am curious as to your opinions... it has been really fun to look and to find these! I will add more images in subsequent posts.
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