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Found 25 results

  1. We've been finding these oddball puffy stars in the Late Ordovician (Sandbian) of eastern Missouri (Illinois Basin), in the uppermost part of the Plattin Group (a Platteville equivalent) or possibly the lowermost part of the Decorah Group (Katian). We've been finding a lot of weird fossils in that zone, including articulated cyclocystoids, but these I'm at a loss on. They seem to be calcite and preserve in the same texture and color as other echinoderm material in the same rock. They vary in convexity and in the presence of a central hump or divot, but there never seems to be a lumen that goes
  2. A friend uncovered this oddball today in the Late Ordovician (Sandbian) of eastern Missouri, in the uppermost part of the Plattin Group (a Platteville equivalent) or possibly the lowermost part of the Decorah Group. He's been finding a lot of weird fossils in that zone, including articulated cyclocystoids, but this one I'm at a loss on. Too wobbly for an orthoconic cephalopod, too much space between calcite elements for a crinoid column. Given the size, is machaeridian a possibility? What other ideas should we be considering?
  3. Eastonian

    Cyclocystoids

    I collected this rock slab two years ago outside Napoleon, Indiana, and didn't get around to identifying the two "rings" until this week, when I asked two members of my fossil club for their help. What we have are two specimens of cyclocystoid in the same slab. Each is about 12mm in diameter. Because I collected this from spoils piles, I can't pinpoint the period, but my guess is Silurian or Ordovician. There's no evidence of the peripheral skirt, plates or radiating lines from the center. Only the cupules. I will call on another club member to see if he can do any cleaning that might reveal m
  4. Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to com
  5. doushantuo

    echinodermata/Diploporita:Prokopius

    1697_Paul_180820.pdf Prokopius, a new name for “Hippocystis sculptus”Prokop, 1965, and the status of the genus Hippocystis Bather, 1919 (Echinodermata; Diploporita) Christopher R.C. Paul . Bulletin of Geosciences 93(3), 337–346 (5 figures).
  6. Greetings, all! I am currently writing a thesis involving fossils from the Burlington Limestone near its type section along the Illinois/Iowa border. To demonstrate the diversity of the crinoidal remains from the limestone (over 400 species have been described from the Burlington alone!), I am looking for photographs of articulated crinoids. Do any of you have any that you would like to let me include in my thesis? If possible, I would like high-res images of crinoids identified to genus or species with a scale bar/ruler present in the image as well as the collection/locality info. I can'
  7. Gen. et sp. indet.

    echinoderm ossicle

    Different views of a single element, 3 mm at its biggest dimension. I find a lot of echinoids as well as bourgueticrinid and starfish ossicles in the sediment. What's your opinion? Calyx fragment? Lower Campanian, marine, southern Poland.
  8. doushantuo

    The Ordovician of Oland

    phosphthesi about 36 MB ******************** Phosphatized echinoderm remains from the upper lower Ordovician strata of northern Oland,Sweden preservation,taxonomy and evolution Magnus Svensson Examens arbete i Geologi vid Lunds Universitete n 105/1999 ******************** diacritics omitted("Oeland") Could the bee have any more knees? Nope. characterization:Monograph/thesis. 54 pages excluding bibliography
  9. doushantuo

    what??

    This one raised my eyebrows some Reich_mesozoiophiocystt_al-2018-Palassechinodermology.pdf Mike Reich,Tanja R.Stegeman,Imelda M.Hausmann,Vanessa J.Roden,Alexander Nutzel: The youngest ophiocistoid: a first Paleozoic-type echinoderm group representative from the Mesozoic Palaeontology,v.61,iss.6/2018 size:3,122 Mb,approximately edit(23-11)spelling mistake in the citation
  10. Gen. et sp. indet.

    crinoids or cyclocystoids

    Silurian (?) erratic boulder from Poland. Echinoderm ossicles. Cyclocystoids or crinoids (eucalyptocrinitid crown & arms?). Please help
  11. Gen. et sp. indet.

    crinoid from gravel

    Southern Poland. Found in parking lot gravel, so age unknown, although Late Jurassic or Late Cretaceous to Paleocene likely. I quess it's an isocrinid - could anything more be added to that?
  12. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since July 10
  13. doushantuo

    Maastrichtian asteroids

    Recommended,and then some Gapalbed13.pdf As usual with this journal, excellent paleobiological information & documentation. There has been a post regarding Moroccan an asteroid accumulation possibly being fake,but at the moment I can't find it.
  14. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since May 11,
  15. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since May 11,
  16. Death assemblage of rare Oligocene crinoids, Isocrinus, ---ALSO, I'm pointing at an unidentified starfish; there is also a second in the center of this image
  17. Gen. et sp. indet.

    asteroids

    I have 3 specimens of Recent asteroids as a comparative material to my fossils. Is there a place on the internet where I could have them identified? I suspect they are oreasterids: Pentaceraster and possibly two species of Protoreaster, but I'm not sure if really and what species.
  18. mediterranic

    Echinodermata from Morocco ID help

    Hello guys, can someone help determining the genus and species of this Protasteridae from Kaid Rami, please? 4,2 cm maximum diameter, part and counterpart. Thanks in advance, Miguel
  19. doushantuo

    ancient urchin

    Yes,L.& E. http://www.thefossilforum.com/index.php?/topic/65304-archaeocidaris-teeth-and-other-bits-uk/#comment-683845 http://www.thefossilforum.com/index.php?/topic/41735-another-quiz/#comment-455460
  20. К сожалению , я не говорю по английски, но я не плохая фотография, так что позвольте мне сказать , мои фото .. На фото полного цикла от процесса экстракции до готового образца морских лилий Neotaxocrinus. Искренне, Александр Unfortunately, I do not speak English, but I'm not a bad photograph, so let me say my photos .. On the photo of the complete cycle from the extraction process to the finished sample of Neotaxocrinus sea lilies. Sincerely, Alexander
  21. doushantuo

    no,i said MILIARY

    I am posting this because I think it is a necessary adjunct to Andy Smith's work Mo Milias.pdf figure:
  22. Hello! I'm new to the forum and fossil hunting. I've actually come to it by way of hiking. I've been hiking for years and grown curious about my finds. Most I've come across are easily identifiable, but these two have proven more challenging. A geologist friend suggested that they are a type of echinodermata. But since the first has six rays I thought it might possibly be evactinopora radiata. However, the examples of evactinopora radiata I have seen online are significantly smaller than this example. I know I should have photographed a coin or something next to them to
  23. Any help what kind of this crinoid? thanks
  24. Kara

    Sea star from Finland

    Hello again from Finland! I need your expertise again This big Sea star fossil was found a couple of years ago from an energy peat stock in inner Finland. It originated from a Finnish mire (drained to a peat bog). The pics are poor, but can you identify what species this is? How old can it be? Thank you very much! - Kara
  25. doushantuo

    echinoderm or something else?

    Around 1967 Jefferies launched his preliminary ideas on "calcichordates". Many echinoderm specialists are not convinced by his ideas. But: his interpretation of functional morphology makes sense,and his plate nomenclature has been taken onboard by at least some non-adherents of his theory. Although NOT commonly found,in some parts they can be a significant part of the paleofauna. Time to meet a fascinating group of animals! NB:LARGE download,and validity of the link expires soon http://rstb.royalsocietypublishing.org/content/royptb/282/990/205.full.pdf
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