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

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  1. cameronsfossilcollection

    Estaingia bilobata

    From the album: Emu Bay Shale Trilobites

    Emu Bay Shale Ptychopariid trilobite! This Australian treasure was a gift from a generous friend!
  2. cameronsfossilcollection

    Estaingia bilobata

    From the album: Emu Bay Shale Trilobites

    An amazing gift, this Lower Cambrian ptychopariid was prepared by Ben Cooper.
  3. cameronsfossilcollection

    Juvenile Emuella polymera

    From the album: Emu Bay Shale Trilobites

    An exceptionally lucky, fresh split Emuella from a small piece of Emu Bay Shale. Barely 2 mm, about half of the bug is present.
  4. Lucid_Bot

    Carboniferous Worm?

    This fossil comes from east Pittsburgh. I believe the formation is the Casselman, Conemaugh Group, Pennsylvanian. It looks like a worm to me, but what do you think? Thanks.
  5. Looking to see if anyone is able to identify this as an Anomalocaris appendage? Measures approximately 60mm Middle Cambrian Latham Shale Marble Mountains, CA, USA Thanks in advance!
  6. tekknoir

    Another tiny... something...

    Don't ask me how I find the tiniest things in existence, it's a gift, lol. I don't have a proper scale on hand, but the stone is about 7mm, corner to corner at the longest. I was thinking maybe a partial crinoid or some sort of arthropod, but the underside is dimpled sort of like volcanic rock, so maybe it's just a feature of the rock and nothing more? I'll try to add more details when I get home. Found in Doña Ana county, New Mexico.
  7. Fullux


    I'm interested in this Arthropleura fossil and I just want to make sure it's legit. The seller says it's a pleurosegment from the tail of a younger individual. They also point out that there are Mariopteris remains.
  8. SilurianSalamander


    Found in the side of a building in Wisconsin, Cambrian-Devonian rocks here. Any ideas? Thinking bivalves or a bivalved arthropod. Sorry for the lack of scale! Each one is about the size of an apple seed
  9. SilurianSalamander

    .75 inch trilobite?

    Paleozoic rock. I found this looking back through some scrap rocks. I think this is a stone I found some crinoids, brachiopods, horn corals, and a trilobite in before. .75 inches long (sorry for not including a scale in the picture) thanks!
  10. connorp

    Mazon Creek millipede?

    I had this Mazon Creek concretion open today. It was collected from the Braidwood biota (freshwater/terrestrial). My best guess is a partial millipede (Amynilyspes?) but I'm not sure and wanted to get other opinions. Thanks for any help. @Nimravis @deutscheben @bigred97 @RCFossils @stats @flipper559 @Mark Kmiecik
  11. Another mystery specimen; this one belongs to a relative who doesn't take good pics and is far away, so I'll begin by apologizing for the photo quality. No locality info, but this person has many other fossils from Morocco, so that's a possibility. It has hints of fish, but only hints; I think I see one or two fins. What I can't work out is the overlapping arrangement of segments. It looks vaguely like an arthropod (Aglaspid, maybe?), but again, I think I see a fin or two. Uuuughhghghghghghhhh.... It's driving me absolutely bonkers. Help?
  12. Mahnmut

    Lower permian arthropod trace?

    Hello dear fellow forum members, some time ago I was given the remnants of a geologists expedition souvenirs, without any labels. The piece pictured below was in a box together with a nice example of the trace fossil tambia spiralis, and about the same colour matrix. So I assume it could be from the same location, which may be the famous permian Bromacker quarry. It most resembles Limulus traces as far as I could find though. Described from Bromacker are several species of roaches, but on the other hand, I do not know if it is really from there. Any ideas?
  13. Nautiloid

    Eurypterus remipes + Acutiramus telson

    From the album: Bertie Group fossils

    This is a nice association piece showing a decent Eurypterus remipes along with an Acutiramus sp. telson. This piece is from the Fiddlers Green Formation at Lang’s Quarry, and was a gift from a close friend.

    © Owen Yonkin 2022

  14. Crane Hill, AL Carboniferous Thoughts about this textured layer of this rock? A few weeks ago, I realized this specimen was too fragile to be cleaned by a newbie. The surface looks sort of like pebbled leather, but it is extremely brittle. I put it in a box to explore later when I have learned how to clean something like this. Tonight, I came across a pic of megaloolithus in old thread about Dino eggs emphasizing texture. I realize my specimen is is not from the correct time period to be an egg shell of anything - but, it piqued my curiosity again. Din
  15. L.S., Would like to call upon TFF's collective expertise to help with the identification of fossil I found in the Westphalian D (Upper Carboniferous) of the Piesberg quarry near Osnabrück, Germany. The specimen (part and counterpart) shown on the photographs below is almost 8 mm large along its longest dimension. The surface is relatively shiny compared to plant material in the same slab of rock and covered in small tubercles (or other little bumps). The shape is subtriangular in outline and seems to be bounded by a "band" of some kind along at least half its circumference. The "bu
  16. Koopyetz

    Today’s finds

    Spent some time at road cut west of Canandaigua Lake. Found trilobite head first, others followed. Nice day for exploring. Regards Rick
  17. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This specimen exhibits both valves. Collected from the Middle Devonian Hamilton Group of Central NY on August 8, 2022

    © Owen Yonkin 2022

  18. From the album: Bertie Group fossils

    Acutiramus sp. from the Phelps member of the Fiddlers Green Formation, Herkimer County, New York. Self collected on August 8, 2022.

    © Owen Yonkin 2022

  19. SilurianSalamander

    Giant Ostracod?

    Found in some Paleozoic chalk and limestone gravel along with crinoids and brachiopods.
  20. connorp

    Mazon Creek Arthropod ID

    I had this Mazon Creek arthropod open recently. It was collected from the Braidwood fauna (freshwater/terrestrial), so initially I thought this was just a tiny syncarid shrimp as they are the most common arthropod to find here. However looking at it closer, I'm not so sure and was hoping for a second opinion. In particular, the legs are short and spiny and do not look like shrimp legs to me, although I may be wrong. Here are images of the positive and negative sides of the "head", middle, and rear, respectively. I put "head" in quotes because I can't tell i
  21. Nautiloid

    Complete Rhinocaris columbina carapace

    From the album: Nautiloid’s phyllocarid collection

    This is a nice 3D example of a Rhinocaris carapace, which was found by me on May 14 at a Middle Devonian site in Central NY

    © Owen Yonkin 2022

  22. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This is a great specimen of Rhinocaris columbina which I collected a couple summers ago. Both sides of the carapace are there as well as the majority of the telson, which is tucked around the underside of the rock.

    © Owen Yonkin 2022

  23. Nautiloid

    Echinocaris punctata

    From the album: Nautiloid’s phyllocarid collection

    This beautiful near-complete specimen was collected by me a couple summers ago at an exposure of the Middle Devonian hamilton group in Central NY.

    © Owen Yonkin 2022

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