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Found 19 results

  1. Cassandra Tiensivu

    Possibly disarticulated cystoid pieces?

    I collected a bucket of muck from my favorite ditch in Alpena (Michigan), and screen washed it. This is the Potter Farm formation. There have been some very interesting things to come out from it. Most of it I can give a basic ID to, but this one has me perplexed. A friend suggested they might be disarticulated pieces of a cystoid. I have never found cystoids before, so this is completely new territory for me. Does anybody have any thoughts? Front: Back: (Sorry about the pen! I misplaced my ruler. Needed something for scale.)
  2. From the album: Echinoderm Collection

    Pleurocystites squamosus (Parseley, 1982 (?)) with partial Isorophusella incondita (Raymond, 1915 ) attached to the cystoid. Upper Bobcaygeon Formation, Middle Ordovician. Simcoe County, Ontario, Canada. Plate is 11cm long.
  3. PaleoOrdo

    Need help for ID

    I cannot figure out what is this fossil. Can anyone help me for ID? I found it in an area in Norway in the Oslo field, ordovicium or silur area. Could it be a part of sea-lily?
  4. Eastonian


    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
  5. minnbuckeye

    Looking For A Copy

    In order to ID a find of mine, I came across an article that appears to have my answer. Does anyone possibly have access to this? I can't seem to get it: Carabocrinid crinoids from the Ordovician of northern Iowa and southern Minnesota Thanks, Mike
  6. Hello everyone, these fossils are quite common in at least one Czech locality of Bohdalec formation (upper Caradoc/Beroun) and I wondered if anyone has seen anything similar somewhere. The fossils are lentil shaped, with a thin egg-like shell that could be cracked and removed to expose inner layer of different color and structure. The size is 1 to 4 mm in diameter. I've consulted some experts and although they've all encountered similar fossil, they have no idea what it is. One of the opinions was that it could be a juvenile cystoid of some sort, for example Echinosphaerites seems to be comm
  7. 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
  8. Tidgy's Dad

    Cystoid and coral?

    Hello friends and TFF family! Another little palaeozoic problem. This was given to me back in the mid 1980s and was said to be from the Pentamerus Grits of Newlands, Girvan, Ayrshire, Scotland. Brrrrrrrr!!!!!! I have it marked down only as "Cystoid?" and it may well be. The hexagonal patterned bit down the edge of the rock including the smooth shell like piece is 2.2 cm long. Bad picture. Here is a better close up. You can kind of see above that the hexagons are lying on the surface of the smooth bit, which i once thought was a bit of Pentamerus ob
  9. I went shopping for a nice Cystoid (We don't have in my area as far as I know) - Bought a Holocystites scutellatus - When researching the taxonomy, Wikipemedia Commons gives the following: Regnum: Animalia • Phylum: Echinodermata • Subphylum: Blastozoa • Classis: Cystoidea • Ordo: Aristocystitida • Familia: Aristocystitidae • Genus: Holocystites Hall, 1864 Fossilworks gives: Kingdom: Animalia Phylum: Echinodermata Subphylum: †Blastozoa - Sprinkle 1973 Class: †Diploporita Superfamily: †Sphaeronitida Family: †Holocystitidae Genus: †Holocystites So - Is it a CY
  10. Malcolmt

    Disorganized chaos

    Well I got a new phone (Samsung Galaxy Note 8) on Black Friday and was playing with it snapping some pictures. Those of you that have been to my house know that I am totally disorganized and definitely need to organize my fossils. Thought I would share some of the disorganized chaos that is my basement fossil dumping area. This tends to be where fossils go to rest if they do not make it to the glass display cases (3) upstairs where I put the good stuff. But then that is a step up from the ones that never get out of the map drawers and boxes in the garage. One of these days I will get around to
  11. Honestly I seriously thought about not posting this find from yesterday. I did not want any of you thinking that the fossil gods where being grossly unfair. But then I decided that in all likelihood most of my comrades here on the forum will never have seen one of these, never mind one this is pretty much as good as you find them. Promise not to submit it for IPFOTM. Four of us were out collecting splitting a lot of rock and excavating near the area that I found those two amazing Astrocystites a few weeks ago (August Invertebrate Fossil of the month) After a very unproductive 5 ho

    Amecystis laevis

    Amecystis laevis (Ulrich and Kirk, 1921). Upper Bobcaygeon Formation, Middle Ordovician. Simcoe County, Ontario, Canada. This specimen is among the ten specimens on a hash plate that was won in a bid and bought over Ebay. The specimen is missing the two tentacles at the top of the head. Length of the specimen was measured by using a measuring tape.
  13. I bought this fossil the other day. It is two cystoids from the middle Cambrian, apparently from Idaho. I was looking for more information as to how they caught their food, perhaps their mouth/digestive processes. I seem to find a lot more about crinoids than I do these guys. Part of my curiosity is that I've seen fossils of crinoids with rather well-preserved tube arms showing decently sized pinnules to catch floating food particles, however, the few pictures of cystoid fossils I've come across seem to show thin arms and I can't really see any pinnules preserved. It just kind of peaked my cur
  14. Malcolmt

    Unknown Ordovician Verulam

    Here is one for you knowledgeable folks. The fossil does not actually belong to me .The individual who found this specimen is a very experienced collector and has never seen this one before in either the verulam or the BobCaygeon. It was found last season in either the bottom of the verulam formation or the top of the BobCaygeon Ordovician formation near Brechin, Ontario Canada. We are generally calling this a cystoid or a crinoid. Some thoughts so far are (in order of our thinking) Balacrinus sp archeocrinus lacunosus Neoarcheocrinus Rare cystite Jump in with your thoughts
  15. BigGuy


    From the album: Silurian Fossils - Giles County Tennessee

    Caryocrinites cystoid fossil found in the Waldron Shale in Giles County, Tennessee. The cystoids resembled crinoids, but they had an ovoid, rather than cup-shaped, body. The mouth was at the upper pole of the body, with the opposite end attached to the substratum, often by a stalk, although some stalkless species did exist
  16. I just purchased a large collection of fossils & need some help identifying this plate of trilobites; I'm a total novice when it comes to fossils; if you ever need help with Roman antiquities, I'm your man; but with fossils, I'm a total ignoramus. Here are some pics. I'm probably ok with the cystoid; but I can use all the help I can get! Any help will be greatly appreciated! Thanks in advance!
  17. Han.T

    Russian Trilobite Id

    Hi all, I recently acquired this plate with a couple of Russian trilobites and a cystoid. Seller said it was from an old estate, and does not have the exact species for each type of bug. I have my own amateur suspicions on their IDs but I would be grateful if someone could help me confirm. Larger trilobite is around 4 inches in length, could it be a Pseudoasaphus(Pseudoasaphinus)? Would like to pinpoint the exact species for this one if possible. Ventral trilobite is about 3 inches, pity it came without the hypostome! My guess is an Asaphus cornutus or lepidurus? Lastly the cystoid, Echino
  18. Caleb

    Pleurocystites sp.

    From the album: Other Fossils

    Here is a Pleurocystites sp. from the Cummingsville Formation of the Galena group of Southeast Minnesota.
  19. z10silver

    Cystoid, Blastoid, Or Crinoid?

    Found by a friend in the Mojave Desert. I wasn't sure if this was a cystoid, blastoid, or crinoid - or something else? I appreciate the help. -Zach
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