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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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  1. SilurianSalamander

    Gastropods or tube worms?

    Found these weird spirals in this chunk of agatized rock. Devonian from Bradford beach in Milwaukee. Thanks!
  2. Afternoon, Was looking through some drill cuttings from the Oldsmar formation ~2600 feet bls and am wondering if the majority of these are similar to Ranikothalia from looking through some papers from Yucatan. These are all Eocene in age; any help would be appreciated and I will add more images as we bring in more cuttings. The more spherical images are from higher up around ~2100 in the glauconite layer. Sorry for low quality it's a cheap microscope. Thanks, Ekker
  3. Missourian

    Mollusk in a phosphatic concretion

    Phosphatic concretion, Muncie Creek Shale, Kasimovian/Missourian Stage, Pennsylvanian Kansas City metro, KS/MO, USA I'm pretty sure this is a mollusk. The fine striations remind me of those on some Poterioceras: Any ideas?
  4. pachy-pleuro-whatnot-odon

    Preservation of colour in fossil shells

    Hi all, Some time ago I found this shell in (what I believe to be) the French Upper Muschelkalk (Triassic). Now I'm not into shells myself, but to judge from the remains of operculum on the underside of it, the specimen concerns an oyster. Most strikingly, however, the shell has a pattern of darker-coloured lines that do not correspond to any three-dimensional/elevational differences on the shell surface - which is, in fact, entirely flat. I haven't seen this on a fossil shell before. Now when doing a Google search for my response on whether it would be possible for cru
  5. Jemstar

    Genuine Picasso?

    Hi All, Sorry, not looking for an I.D but I couldn’t find another discussion to add it to… We took a trip to California recently and one of my beach finds was this funny “Picasso” fossil which I thought was good for a giggle. Also visited Shark Tooth hill, but that’s another thread for sure.
  6. baker75

    ????

    Is this a fossilized mollusk? Nut?
  7. Yesterday I stumbled across Poricy Park Fossil Beds, which led me here after digging, but I was fortunate to find some of my own first fossils, and was even gifted four large ones from a passerby who stopped to make sure we got something good out of the experience. All of the said fossils are aquatic molluscs (or maybe sponges? But they definitely look like bivalves). Here are the four gifts: Here is a shell fused with a rock, although quite well: Some sort of clam piece? Another of the same/similar build
  8. Kribensis

    The Devils Horn? Help ID Please

    I have no clue what this is, though it looks cool and somewhat demonic. Appreciate the help.
  9. I have found several of these in an outcropping of shale and limestone in the Iola Formation in Northeastern Oklahoma (middle Pennsylvanian). The longest dimension is about 15 mm (≈ 5/8 inch). Some of the other specimens are slightly larger, but all have the same pattern of bumps. (I photographed this one because it shows the least wear.) I’m wondering it might be the carapace of a phyllocarid or some other crustacean. Alternatively, it might be a bivalve or other mollusk. Any help with ID would be appreciated. Focus and exposure were difficult, so there are several images. Best wishes.
  10. Hello, I found this on a beach along Croatian coast and was unlike any of the surrounding rocks/geology. It's symmetrical and submarine-shaped. I'm wondering if it's a fossil v. a natural formation. Any information is greatly appreciated!
  11. Vestavia Hills, AL (Ordovician to Mississippian) I found these very odd rocks exposed by recent flooding. i wondered about a tree root mold or burrow for the first one, but figured low chance of identifying. Just in case, I did a vinegar soak to remove more of the mud. Today, I saw a tiny little spiral shell. Is it a fossil? (vs a modern snail that got trapped in this sediment). Any thoughts about the overall shape of the rock? Since it was found nearby, I’m including a pic of the other weird rock. I considered part of a horseshoe crab or trilobite molt, but I can thin
  12. scragry

    Help Identifying mollusk

    Hi, I happen to have bought this fossil this morning but can’t seem to identify it, from the way it looks, it seems to be a mollusk but has ridges near the base where it connects to the matrix.
  13. My collection is enriched with new pieces from the dear, old Europe. This is a Gryphaea dilatata, the so-called "devil's toenail", from Villers-sur-Mer in Normandy, France:
  14. Marco90

    Myophorella clavellata

    From the album: My collection in progress

    Myophorella clavellata Parkinson, 1811 Location: Villers-sur-Mer, Normandy, France Age: 166-163 Mya (Callovian, Middle Jurassic) Measurements: 2,8x1,7 cm Kingdom: Animalia Phylum: Mollusca Subphylum: Conchifera Class: Bivalvia Subclass: Palaeoheterodonta Order: Trigoniida Family: Trigoniidae
  15. Marco90

    Gryphaea dilatata

    From the album: My collection in progress

    Gryphaea dilatata Sowerby, 1818 Location: Villers-sur-Mer, Normandy, France Age: 163-157 Mya (Oxfordian, Upper Jurassic) Measurements: 7x7x7 cm Kingdom: Animalia Phylum: Mollusca Subphylum: Conchifera Class: Bivalvia Subclass: Pteriomorpha Order: Ostreida Family: Gryphaeidae
  16. bockryan

    Douglas Point Mollusk

    Interesting shell found at Douglas Point, Maryland which should be Paleocene Aquia Formation. Didn't see an obvious match anywhere online, any ideas?
  17. Burke_Family

    Gastropod? Mollusk? Or?

    Our 3rd grader found this on a beach in Coos County, OR. Her first impression is that this is a snail fossil. We’re wondering 1) what is this and 2) if this is an internal mold? There’s also an impression on one side of the matrix that looks like a separate cast. But we’re really not sure… we are having a difficult time visualizing what’s going on here. When you look closely at the spiral it does appear to have shell in there. We’ve googled a ton and compared pictures of different spiral fossils, but still aren’t sure. Thanks for any info!
  18. Hi, this rock was found in a construction site in Bexar county, Texas. I think there are mostly mollusk shells, but I’m also really curious about the little tube things, which I’m guessing might be crinoids? Thank you for your help!
  19. MrBones

    Nautilus Chamber? from Al Ain

    Hello again. I am currently in Al Ain (an Emirate of the United Arab Emirates), my absolute favourite place to be! I have found many fossils here, but I was quite excited when I picked this one up today. I think it's a nautilus chamber. At the same location there are tousands of nummulites, many shell steinkerns, and some urchin fossils (schizaster along with some others). I would like some confirmation! (The square is 5cm by 5cm)
  20. I was lucky the last time out and found a 36" piece of a near shore sea floor. Most of it looks like this, a mixture of shells, shell fragments, and casts. Would you remove the good stuff or leave it as is?
  21. TheRocksWillShoutHisGlory

    Mazon creek shell, not from a nodule

    I introduced a coworker to pit 11 on Sunday. He was picking up all kinds of rocks, some of which I was pretty sure were not caeboniferous, but I didn't want to break his enthusiasm. Now, he dropped off his bucket at my class because I have a freezer, and in the rocks that i was sure were from the wrong Era was this nice shell! Can anyone identify it?
  22. Quriosity

    Torinia_patula.jpg

    From the album: Lutetian Mollusks

    © @ Alexandre Tuel

  23. Quriosity

    Olivancillaria impressa.jpg

    From the album: Lutetian Mollusks

    © @ Alexandre Tuel

  24. Quriosity

    Murex sp.jpg

    From the album: Lutetian Mollusks

    © @ Alexandre Tuel

  25. Quriosity

    Murex sp 2.jpg

    From the album: Lutetian Mollusks

    © @ Alexandre Tuel

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