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Found 13 results

  1. Gen. et sp. indet.

    shell in flint

    Erratic boulder found in Poland so no geological context, but I'm guessing Cretaceous circa about ;-) Can you identify this species? Maybe Lopha sp.?
  2. Gen. et sp. indet.

    brachiopod ID

    I found this beauty yesterday in a gravel in central Poland, so it's an ice age gift from Baltic Sea or Scandinavia, Ordovician or Silurian in age. Any ideas? I'm thinking... maybe a billingsellid of some sort? I'm not good at Palaeozoic brachiopods.
  3. Just a short video of a quick trip to the beach last week to enjoy the spring sunshine!
  4. I found this rock 50 years ago on the farm where I grew up in northern Illinois. The bedrock is far below the surface there. The surface rocks are erratics, dropped by glaciers that moved southwest from Canada through Michigan and into Illinois. It appears to be a kind of agate with some druzy quartz on it. I've recently shown it to several people and have gotten several different opinions on what it is and how it was formed, including that it is some kind of fossil. What do you think? The surface lines you see in some of the photos (most clearly in the third photo) are narrow and
  5. Gen. et sp. indet.

    trilobite

    Erratic boulder from central Europe. Ordovician or Silurian. Any ideas as for the trilobite group, e.g. order? The ornamentation is quite characteristic, I presume. Librigena?
  6. Gen. et sp. indet.

    any ideas on this 'earthworm'?

    Any ideas??? Trilo spine? Coral? Brach shell edge fragment? Erratic boulder (Ordovician or Silurian in age), central Europe.
  7. Gen. et sp. indet.

    crinoids - ossicles

    Ordovician or Silurian erratic boulder from Poland. Sorry for poor quality photos - I'm not able to get better for now. What are these 8-shaped lumen ossicles? Also, can you spot fragments of calyx?
  8. Gen. et sp. indet.

    crinoids - stems

    Ordovician or Silurian erratic boulder from Poland. Sorry for poor quality photos - I'm not able to get better for now. Is this a chance association or can you spot fragments of calyx, stem, and cross sections through arms? What crinoids are these - crotalocrinitids?
  9. Gen. et sp. indet.

    crinoid on sponge?

    Erratic boulder from Poland. Age unknown but likely Late Cretaceous to Danian. The silicified concretion is developed around a sponge, visible in view places, like the spot on the photo. This specific spot bears also a ramose feature. Could it be part of the sponge anatomy or a crinoid root?
  10. Gen. et sp. indet.

    Bivalvia or pygidium

    Ordovician or Silurian erratic boulder from Poland. It's not the first time I come across this type of fossil. Would you say these are bivalves or some big trilobites' pygidia?
  11. Gen. et sp. indet.

    total mystery (asterozoan?)

    I found it today in gravel on a parking lot in Poland. Age remains uncertain, as the rocks present were all erratic boulders. What can that be? An asterozoan, perhaps?
  12. I_gotta_rock

    Coral, Sponge or Bryozoan?

    I'm stumped. I've been collecting erratics off the beach along the Delaware Bay for the last six months and I keep coming up with mysteries. This specimen is 1" long. Unfortunately, because it is an erratic, all I can tell you is that rocks of this type wash down from the Appalachians all along the Delaware River and Bay til it reaches the Atlantic Ocean. They are Paleozoic, but I don't know enough of the geology from PA and NJ to narrow it down by rock type to a formation. Can't find a high enough resolution GEO Survey map, either. Other fossils in this type of rock are rugose corals, tabulat
  13. Greetings. This is my first post, and I have a real puzzle for you folks to look at. Let me preface by say that I usually research any question I have as much as I can before seeking assistance by asking for help through forums online. This time, however, I have absolutely no idea where to start. I understand most of the basics about geology and fossil formation, from stellar formation right up through tectonics, volcanism, and the development of life and how it ends up dead in the mud and eventually on display in a museum somewhere. Unfortunately, I live in the Kennebec River valley in Centr
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