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  1. 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 Ca
  2. 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 o
  3. 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.
  4. fossil_lover_2277

    Ammonoid, Foreknobs formation, Virginia, U.S.A., 2021

    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

  5. 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!
  6. 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?
  7. 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
  8. 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.
  9. 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.
  10. 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.
  11. 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 abo
  12. 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
  13. Scarletfemale


    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-ro
  14. Bob Saunders


    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.
  15. 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 th
  16. 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.
  17. 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
  18. Mary888

    Fish fossil identification

    Could you please identify these fish fossils?
  19. 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.
  20. davidcpowers


    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.
  21. 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 Eoce
  22. Baddadcp

    creek find 3

    Arundel Formation. Maryland. Lower Cretaceous. What say you?
  23. Baddadcp

    Creek 2

    Thoughts on this?
  24. Baddadcp

    Pseudo or other?

    I have been looking at this and can't decide if it's something or not. I leave it to the experts. Personally I thought concretion until I saw the belt. It looks like a squashed acorn, but I don't believe there were oaks in Lower Cretaceous. Thoughts? No, it's not a human artifact.
  25. NASA's Curiosity Rover Finds Chemical Building Blocks For Life On Mars, Morning Edition, June 7, 2018 https://www.npr.org/2018/06/07/617235884/nasas-curiosity-rover-finds-chemical-building-blocks-for-life-on-mars NASA finds ancient organic material, mysterious methane on Mars, June 7, 2018 by Sean Potter, NASA https://phys.org/news/2018-06-nasa-ancient-material-mysterious-methane.html https://www.jpl.nasa.gov/news/news.php?feature=7154 The abstract is at: Eigenbrode, J.E., Summons, R.E., Steele, A., Freissinet, C., Millan, M.,
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