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  1. bockryan

    Crinoidea

    From the album: Fossil Collection: DC Area and Beyond

    Crinoidea St. Leon, IN Richmond Group Late Ordovician
  2. bockryan

    Crinoidea

    From the album: Fossil Collection: DC Area and Beyond

    Crinoidea Cumberland Lake, TN Fort Payne Formation Carboniferous (Mississippian)
  3. Chalkdude

    Crinoid arms???

    I found this sample in southeast Kansas (Chautauqua co.). It has what looks to be crinoid arms on it but I’m not for sure. The arms look to be made up of small segments. Any helped would be appreciated.
  4. So...... let's say I wanted to collect one specimen of each class of echinoderms (yes, the classes are always in flux, I know). Not a great specimen, just some ossicle or fragment easily determinable to be a member of that class for each class. It would be a fun trip around the world going to a set of localities, each of which was the easiest place in the world to find specimens of some particular echinoderm class. Some classes (crinoids, echinoids) seem almost too easy; others (blastoids, cyclocystoids, paracrinoids) are hard in some parts of the world but trivially easy here in eastern Missouri, USA. But more obscure classes of echinoderms (ctenocystoids, cinctans, solutans, stylophorans) seem to be hard to find no matter where you go; for each of these, I'm curious what formation / location would be the *least* hard. So let's start with a weird one: Where in the world is it *least difficult* to find a fossil readily determinable as belonging to an ophiocistioid?
  5. bockryan

    Crinoidea

    From the album: Fossil Collection: DC Area and Beyond

    Crinoidea Romney, WV Tonoloway Formation and Helderberg Group Late Silurian/Early Devonian
  6. bockryan

    Crinoidea

    From the album: Fossil Collection: DC Area and Beyond

    Crinoidea Penn Dixie Fossil Park & Nature Preserve, NY Moscow Formation Middle Devonian
  7. bockryan

    Crinoidea

    From the album: Fossil Collection: DC Area and Beyond

    Crinoidea Maysville Roadcut, KY Kope, Fairview, and Bellevue Formations Ordovician
  8. Fullux

    Crinoidea

    Howdy all, Been finding some crinoid stems in my usual spot in the Drakes Formation and I'm wanting an ID on them. They look similar to stems from Agaricocrinus americanus from the Carboniferous of the eastern U.S., though they were found in an upper Ordovician deposit. Any ideas?
  9. Bill Dye The Travis Guy

    Crinoid ID Help

    Hello! Looking to see if anyone can tell me what species these crinoids are! It was found in O’Fallon, Missouri. Mississippian Period limestone rock outcropping (road cut). Specific location: (38.8189493, -90.7276743) These are the same fossil ^^^^ These three are the same^^^
  10. Marco90

    Scyphocrinites elegans

    From the album: My collection in progress

    Scyphocrinites elegans Zenker 1883 Location: Boutschrafin, Erfoud, Morocco Age: 420 Mya (Pridoli, Silurian) Measurements: 20x12 cm (plate) Kingdom: Animalia Phylum: Echinodermata Subphylum: Crinozoa Class: Crinoidea Subclass: Camerata Order: Monobathrida Family: Scyphocrinitidae
  11. 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 all the way through as far as I can tell. Some possibilities: stelleroid crinoid (but where anatomically? cystoid (but where anatomically? Up for other ideas or insights. Seen anything like this before?
  12. 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?
  13. 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 commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA
  14. 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't guarantee that I will use every image posted, but if I use your image, then I will acknowledge you in my acknowledgements and give you credit for the image. Thank you for your time & assistance! -Elasmohunter
  15. This specimen belongs to a set of 9 specimens kindly presented by a good friend. Thank you to doushantuo for the link to Roux et al. (2019) paper.
  16. 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?
  17. 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?
  18. 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?
  19. 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?
  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. Any help what kind of this crinoid? thanks
  22. Rick_Bakker

    Unknown fossils

    Good afternoon, My name is Rick, and last summer I purchased a big box of fossils. I got the box mainly for the ammonites that where in there. The box containted about 50 fossils. I was wondering if you could help me with the names of the following fossils. I know some of them are crinoidea and brachiopoda, but I don't know which crinoidea or brachiopoda they are. I hope you can help me out! This a the link for an online album, containing every unknown fossil (11) Album Kind regards, Rick
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