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Found 8 results

  1. Could use some help on these 0.5cm - 1cm invertebrate(?) conical spines in the well known Salem Limestone, a marine limestone of the American Midcontinent. They appear to be solid calcite but do not quite match up with the shapes of crinoid spines and echinoid spines that I know from the Mississippian. I have looked at umpteen Salem Limestone samples but have seen these spines at only one small locality. Any insights appreciated! but please provide your reasoning or evidence.
  2. Lithostrotion decipiens

    From the album Upper Visean fossils of Ireland

    Massive, colonial Lithostrotion decipiens. Tabularium + - 2.5 mm. 16 to 18 septa of both orders. Galway, West Ireland.
  3. Siphonodendron junceum

    From the album Upper Visean fossils of Ireland

    Fasciculate colonial Siphonodendron junceum. Corallites diameter up to 3 mm. No dissepiments. Galway , Ireland.
  4. Gigantoproductus latissimus

    From the album Upper Visean fossils of Ireland

    Gigantoproductus latissimus found in Menlough quarry, Galway. 108 mm by 51mm
  5. Scarce bryozoan. Dyscritella?

    Hi. Last month i've found this one on the Renmore Beach in Galway,Ireland. Early Carboniferous limestone from late Visean it's common all around Co Galway. I search for fossils in this county for 15 years and thats first fossil of this kind i got. Main specimens here are Siphonodendrons, Lithostrotions, Productids and many more brachiopods, corals, crinoids and gastropods. This one here I hope is bryozoan Dyscritella sp. I didn't look to my Mc Coy book yet but the species is described in Geological Survey of Ireland catalogue.
  6. Trace fossil or jellyfish

    Hi, I'd appreciate some help with this one, it's got me completely foxed and I can't find anything similar online. The matrix is a mudstone, it was a loose rock in a stream, the rocks in the area are all Brigantian (Upper Visean) - Carboniferous Cyclothem deposits (Northumberland, UK). There were 3 of these, all about an inch long, oval shaped, but fairly irregular, with faint radial lines/corrugations from a central 'spine'. They are three dimensional about a quarter of an inch thick. Small spiriferid brachiopod shell fragments in the same rock are undeformed, so I think the irregular shape is original. They remind me of small jellyfish but I think that's highly unlikely to have fossilised so I'm guessing some sort of trace fossil. All three are similar in shape and size so I'm wondering if there's a specific name for these, and whether it's known sort of creature made them? Cheers Steve
  7. ID suggestions please

    A recent post from joshyoowy reminded me of something I found a few years ago. It is about 20cm (7 3/4 inches) across. Carboniferous (Visean). Looking forward to your input.
  8. Strange monoplacophoran

    I'm having difficulty identifying this specimen. I found it in Osagean, probably Visean limestone in Lawrence County, Missouri, associated with various other monoplacophorans, which I believe to be kirengellids or something similar. The last picture is an example of an associated fossil of a similar size, being about 3.2cm from foot to apex. I also found in the same piece of stone a smaller, more rounded specimen, as well as fragments of a third. Stinchcomb and Angeli describe two species that share some characteristics with the fossil in question[1]. Kirengella oregonensis, which is found in cherts from the Roubidoux Formation (Lower Ordovician) in Oregon County, Missouri, is described as "strongly laterally compressed" with "aperture oval" (p. 971). And a new species, Wildernessia inexpecatans, from the same area, is described as having "apical curvature; aperture sub-elliptical forming cone; apex centrally located" (p. 973). Neither of these, of course, is what I have, since I am pretty certain my object came from a nearby quarry and is therefore Visean. But could it be another, later type of Kirengellid? 1. Stinchcomb, B. L., & Angeli, N. A.. (2002). New Cambrian and Lower Ordovician Monoplacophorans from the Ozark Uplift, Missouri. Journal of Paleontology, 76(6), 965–974. Retrieved from http://www.jstor.org/stable/1307116
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