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Showing results for tags 'cystoid'.
Found 23 results
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I went on a trip with my local geology club yesterday to the Napolean Indiana quarry and it did not disapoint! I found 30+ cystoids as well as a trilobite!
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Cystoids from the Ordovician (485.4±1.9-443.8±1.5 million years).
Svetlana posted a topic in Member Collections
Hello to all. 4 cystoids from my collection. Found in the Leningrad region of Russia. Replaced by calcite. Size: from 25mm * 23mm * 17mm to 30mm * 30mm * 27mm. Have a nice day VID_20240128_100819.mp4 VID_20240128_100845.mp4 VID_20240128_100903.mp4 VID_20240128_100922.mp4 VID_20240128_100942.mp4 VID_20240128_100958.mp4 VID_20240128_101012.mp4
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From the album: Mahatango Formation
Rare cystoid from the Mahatango, Niss Hollow member, Schykill county.-
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From the album: Oklahoma Paleozoic Fossil Finds
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The Cincinnatian Series (Upper Ordovician) is well known for producing beautiful echinoderms. The crinoids and edrioasteroids are probably best known, but some other weird groups do appear locally. This is a slab of Cheirocystis fultonensis, a cystoid that only occurs in a maybe meter-length interval spanning the base of the type Cincinnatian (uppermost Point Pleasant Formation into the Fulton Submember of the Kope Formation). I collected these last winter in northern Kentucky and just got them back from being prepped today. These are some of my favorite echinoderms – they're just so weird! As found in the field. I took this photo while waiting for the ice to thaw so I could safely lift the slab. After prep. They turned out very well!
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I collected this disarticulated cystoid from the Kimmswick Formation (Late Ordovician) in eastern Missouri. Cystoids are well outside my wheelhouse, so I was hoping someone here might be able to help me narrow down an ID, if one can be made at all from what's present. Thanks for any help.
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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.)
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Pleurocystites squamosus with partial Isorophusella incondita
JUAN EMMANUEL posted a gallery image in Member Collections
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.-
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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?
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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 more of these specimens. I'd appreciate any help you can provide regarding genus and/or species.
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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
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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 common in this formation, although never found on this locality. However no one seems to have done any research into this yet. Associated fauna are small cyclopygid and illaenid trilobites, small brachiopods, graptolites, bivalves and ostracods. Thanks in advance for your thoughts Ondrej
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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 oblongatus but now think it may be some sort of inner layer of the fossil to which the hexagons are attached. Clearer below : Any ideas would be most welcome! @piranha @TqB
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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 CYSTOID or a BLASTOID? Or is science not sure???? I bought another one that Fossilworks DOES classify as a cystoid. Did some reading... seems the fossils from this location are listed as Holocystites and Cystoids. Any insight here? I am trying to build a nice representative collection, so I can start identifying on my own... and try to study when I have the time!!! Dave Ruckser
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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 organizing things, just never happens to be today....... I suspect my kids will end up having to organize it someday......... (That's a scary thought)
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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 online auction site. The specimen is missing the two tentacles at the top of the head. Length of the specimen was measured by using a measuring tape.
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Question about Cystoids and their food catching/feeding mechanism
Sallent posted a topic in General Fossil Discussion
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 curiosity about how these guys would have caught their food and transported it to their mouths. I also can't seem to find any pictures of fossils showing the mouth structure of these creatures. I'm relatively new to fossils, so any help is appreciated. I'm sure someone is bound to know more about these things or have a fossil that shows these things in more detail. Any help is appreciated.
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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
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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 -
Plate Of 4 Russian Trilobites & Cystoid - Need Help With Id
hollywatertower posted a topic in Fossil ID
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!
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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, Echinosphaerites? seems to be one of the more common types associated with Russian trilobites. Please let me know what you think!
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From the album: Other Fossils
Here is a Pleurocystites sp. from the Cummingsville Formation of the Galena group of Southeast Minnesota. -
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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