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Showing results for tags 'crinoids'.
Found 155 results
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Hi everyone. Interesting shapes on rock. Circular shapes both indented and extruding from rock. Found in Fairfield County CT. I'm pretty new to this and have no idea what this stuff is but interested to learn whether geologic or otherwise. Thank you.
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From the album Fossildude's Middle Devonian Hamilton Group Fossils
Small plate with an Eldredgeops rana cephalon, crinoid stem/columnals, ostracods, and a Platyceras sp gastropod. Middle Devonian Hamilton Group, Smoke Creek, near West Seneca, NY. -
Pieces chipped off of a block. S. W. Michigan. last two are with a different camera.
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- fenestella
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Sand like Close PAC of Brachiopods pieces and a few crinoids. Matrix is unknown., but likely calcified clay? Allegan County, Michigan. Coldwater shale zone. Likely Devonian. Your thoughts on what all is in this. Thanks. 240 grams 1 3/8th 35 mm thick x 3 inch wide 76 mm
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Texas Paleontologic Papers Available Online in University of Texas Bulletins
Oxytropidoceras posted a topic in Fossil Literature
Texas Paleontologic Papers Available Online as PDF files Various University of Texas Bulletins, which are available online as PDF files contain in the form of Contributions to Geology, papers about the fossils of Texas. For example, there is: University of Texas Bulletin 4401, Contributions to Geology, 1944 University of Texas Bulletin 4401 contains papers about graptolites from the Cambrian of the Llano Uplift; corals from the Carboniferous of the Llano Uplift; Foraminifera from the Upper Carboniferous; vertebrates from the Triassic, Howard County, Texas; Cretaceous crustaceans from Dallas County; and Pliocene vertebrates from the Texas High Plains. Also, there is University of Texas Bulletin 3945, Contributions to Geology, 1939, which contains Crinoids from the upper Carboniferous and Permian strata in Texas, Raymond Cecil Moore; F. B. Plummer, Univ. Texas Pub. 3945, Dec. 1, 1939, pp. 9-468 Graptolite Faunas of the Marathon Region, West Texas The Ellenburger Group of Central Texas Index to other University of Texas Bulletins and Publications Example of search for "ammonites" in University of Texas Bulletins Yours, Paul H.- 2 replies
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- ellenburger group
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Its been a long time since I last posted any finds, so I thought I'd show you folks what Ive been finding so far. Ive been out a lot this year, and have done quite a bit of exploring. I haven't taken pics of everything yet but Ill add to this as I do. This past summer I took a trip to west Tennessee to an exposure of the Coffee Sands, a Late Cretaceous formation. I was able to find the site, but unfortunately, I found no fossils there. Luckily there was an exposure of the Lower Devonian Birdsong Shale nearby! This site exposes the 'brachiopod zone' which is the bottom of the formation. So as you can probably guess, brachiopods were every where! By far the most common was Atrypa “reticularis” , they were all over the place. Discomyorthis oblata was also common Heres a favorite of mine Kozlowskiellina tennesseenis, They are very decorative. cont...
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Goodmorning/ afternoon all! Being a middle aged 20 year old, I've outgrown the need to go trick or treating for candy on Halloween. This year, my brother and I were supposed to have my nephew over for the weekend. We had originally planned some fun activities for the little guy (he's 4) as real trick or treating was out of the question this year. Turns out this week that 4 of his day care workers came down with the Covid, so he's now in quarantine at his mom's house for 3 (her choice, she won't budge) weeks. All alone for Saturday now, I decided to go out and look for the real treats, fossils! I started by going to my first and favorite honey hole, knowing the site wouldn't be the best to collect currently. Fluctuations in water levels determine how ideal this location is, and the waters been very low this year. While this being a good thing, it's also been so low for some time that overgrowth has had more time to come in. This just makes it more of a pain to scope around, but for me that just means going down to the hands and knees. There were some spots where it wasn't as bad, but all of the ideal scrap spots required patience and sifting through. Not sure why, but I only took one picture in situ this time. Glad I did, because it was a nicer, plump blastoid! It only required a bit of digging around the rock, and prep should be easy peasy on this guy. For the first fossil hunt in a while for me, I would say that yesterday was a successful day out. I only take nicer, complete specimens now a days. I hauled home a nice Globoblastus norwoodi blastoid, an Uperocrinus pyriformis crinoid, a Platycrinites? calyx, and a nice little brachiopod I still need to ID. Heres everything cleaned/ prepped besides the Uperocrinus. I may just leave it as is, but something in me tells me I'll do detail work someday on it. I trimmed down the matrix and half prepped the blastoid. I think this one will stay like it is in matrix. I remove most of the calyxs from the rock, but figured it would be cool to keep a couple of fossils in their rock setting. The hour I spent out fossil hunting was much needed. This past month has only entailed packing up possessions, moving on, and working. Getting out was nice and much needed. Now I have some more fossils to pack up. Hope everyone had a fun, and safe Halloween. Regards, Jackson
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- fossil hunting
- missouri
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Hi everyone, its been a while since I posted here so wanted to share some of my favorite finds from the past few months. Ive mainly been hunting in the marine Blackhall Limestone at various sites across the Midland Valley of Scotland. Although there are several fossiliferous marine limestone and shale bands of similar age and depositional environment in the Midland Valley, the Blackhall seems to be by far the most productive and also tends to have the best preservation. Ive mainly been looking for chondrichthyan teeth, crinoid cups and jellyfish so I'll post these first, I have had a few nice finds of other invertebrate groups recently though so I'll get some pics of these shortly. First up, the jellyfish. This is the largest Ive found so far at 80mm across. Another larger specimen at 60mm across. An average sized one at 32mm. And one of the smallest so far at 21mm.
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Hi everyone! Today, a friend of mine from the Paleontology course at the University of Bristol and I went fossil hunting at the beach of Portishead, as we had heard it was an interesting and productive location. We were fairly confident that we would come home with at least some crinoid pieces, as these were meant to be rather abundant, but our real goal was to hopefully find some of the elusive eurypterid remains. It was about half an hour bus ride from the center of Bristol to Portishead, so it's relatively quick and easy for us to get there. It didn't take too long for us find our first few crinoid pieces in the rubble on the beach, and my friend managed to find a couple of decent spiriferid brachiopods by splitting some small rocks open. Unfortunately, it started to rain quite quickly, and after about an hour of searching the rain we decided to call it a day... so we didn't hunt for very long at all and hence didn't make any impressive finds. We didn't see any traces of fishes or eurypterids either which was a little disappointing, although also somewhat expected. Wishing to escape the rain, we found a little restaurant where we could sit inside and get a warm lunch, and afterwards we decided to just go back home as we were both tired, despite the very short hunt. So in terms of finds, we weren't very successful, but I did manage to snap some nice photos from the location. The geology of the place was really crazy and kind of all over the place, as you can see from the pictures here. Really interesting! We haven't yet covered this topic in my Geology course, but I suspect we will do that sometime soon, and then I will probably be more knowledgeable about what we're seeing actually means. But for now you'll still have to stick with my very amateur descriptions (stratigraphy can be a little complicated for a Pleistocene hunter as myself! ) This is the northern end of the location, Battery Point, where we are looking at several layers of the Portishead Formation. This is a Tournaisian-aged (Mississipian, early Carboniferous, approx 350 million years old) formation that is very rich in crinoids and corals. What's interesting to note is that the layers are not straight, but sit at approximately 30 degrees upwards. But that's pretty mild compared to the Devonian layers (as you will see a bit later). (Continued)
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A Day in the Lower Devonian with the New York Paleontological Society
Jeffrey P posted a topic in Fossil Hunting Trips
Yesterday, Tim (Fossildude19) and myself met at our usual meeting spot and with Tim driving and his downloads playing, we headed north to a planned rendezvous with the New York Paleontological Society's outing at Cobleskill Stone Products just outside Schoharie, N.Y. The weather was gorgeous- perfect really, sunny mid-50s. Fall colors were in full swing. We drove through the northern edge of the Catskills, arriving early at our rendezvous, the parking lot at the Cobleskill Stone Company. It was my first time there since 2013. I went on two previous NY Paleontological Society outings to this site, access tightly restricted. I had wanted to return, but every year there always seemed to be a conflict. One year I recall there was a planned Fossil Forum gathering at DSR on the same day. There were many reasons I wanted to return: The quarry had the best exposure of the Kalkberg Formation I've ever encountered. The Kalkberg is Lower Devonian, part of the Helderberg Group. Marine fossils are especially abundant and well preserved. The biodiversity is exceptional. There are many species of brachiopods, plus corals, nautiloids, bryozoans, the sponge, Hindia, and trilobites. Since the quarry is infrequently hunted, many specimens can be found exposed, even weathered clean right out of the limestone. Many of my best Kalkberg fossils are from there. I was excited to be there. It is always a pleasure to be out collecting with Tim. It was his first time at this quarry. Here are a couple pictures of the quarry. Notice the bright fall colors in the background.- 28 replies
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Planning a serious Iowa excursion for my Uni before winter hits. Was curious if any of you have done any rockhounding around the Le Grand area. Apparently is a site for exquisite crinoid plates. Just curious before I start calling the stone company and procure access/permits/etc. https://www.legrand.lib.ia.us/Library-information/fossils/crinoidfossils was sent a link to this by a contact at UNL...hence my sudden interest https://www.iihr.uiowa.edu/igs/publications/uploads/Em-04.pdf
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Hi Everyone, I took a 2 week trip to the Ohio Valley, arriving back in New York about a week ago. It was primarily a family visit since many of my relatives now reside in the Elizabethtown, KY area. However, the Ohio Valley, as some of you know, is very rich in Paleozoic fossils and I just had to make a few stops on my way there and back as well as between family engagements. I will try to share enough to give you all a gist of it: It was a long day's drive from the northern suburbs of New York City to Richmond, Indiana where I spent the first night. The next day I was headed down State Road 101 to Garr Hill, to collect in the Upper Ordovician Liberty Formation. It was my first time at the site and everything I found was collected from loose rocks at or near the base of the outcrop. A couple of pictures:
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I'm just easing back to regular life after a week of fossil collecting in the province of Quebec. We had a fantastic and highly productive time. There are a number of sites that I cannot mention publicly, and also some excellent specimens that I am sworn not to post anywhere, but I can show a few things. I haven't photographed everything yet, either. We collected mostly in the Neuville and Nicolet Formations. The first stop was Kingston, Ontario where we met up with a fellow fossil friend for a brief time. I obtained my own physical copy of Isotalo's book. I then meandered to a rock pile and spotted what would be the first of many trilobites on this trip, a battered Raymondites superbus in the Gull River Formation.
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- crinoids
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Has anybody found crinoids in kinnekulle sweden? I have only found one small bracipod and a small gastropod and are these crinoids and in what layer should i look for more crinoids and shells? On top of the quarry theres shale i only find trilobites and squids there but anyways are these crinoids or something else?
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Finally made it out to St. Leon, IN while visiting my girlfriend's family in rural Indiana. Here are some cool specimens I found (lots of brachiopods):
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- trilobites
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Ancient sea creatures spent years crossing the ocean on rafts – we’ve worked out how it was possible. Aaron W. hunter, he Conversation, August 10, 2020 Hunter, A.W., Casenove, D., Mayers, C. and Mitchell, E.G., 2020. Reconstructing the ecology of a Jurassic pseudoplanktonic raft colony. Royal Society Open Science, 7(7), p.200142. Abstract of open access paper PDF of open access paper Yours, Paul H.
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Why are crinoids usually the only type of fossil in an area?
Digi posted a topic in Questions & Answers
As the title states, why do crinoids often show up alone as the sole type of fossil in an area? There's a quarry near my house I've been to a few times that has crinoid bearing marble. I've found a few crinoid stem pieces in rocks, but I don't really understand why they're the only type of fossil (unless you count chert.) The area is Permian-Devonian, so if crinoids fossilized shouldn't plenty of other common marine animals have fossilized too? Or am I thinking too narrowly and there's a good chance they DID fossilize and I simply have to look a little deeper? I'm not too knowledgable on the paleozoic so I appreciate any answers. -
an interesting article about crinoids and downloadable. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0156408
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I found this while searching for geodes and crinoids in a southern Indiana lake.
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I recently acquired a small collection; and most specimens were well described....except for a few specimens that at least had age, locality etc .......the attached specimen containing two crinoids and calyx had VERY little information at all. I believe it may be from Illinois, as this was the only information supplied with the specimen. Any help with identification would be greatly appreciated.
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I found all the crinoids below at Lake Michigan beaches in Illinois. (Silurian, Racine formation) I have to admit, I used to not pay too much attention to the ubiquitous crinoids on my hash rocks. That is, until I started to look at them with a clip-onto-the-phone microscope. I quickly found that crinoid disks aren't all the same and are actually quite beautiful and intriguing. Also, finding a pretty little crinoid calyx at the beach got me to look for more like it and low and behold, a short time later, I did find another one. I do believe they are very rarely found at Lake Michigan beaches, unlike the ubiquitous petoskey stones or honeycomb corals. So I've been trying to research Silurian crinoids from this formation, alas with very little success. Oh, for the lucky people who find Devonian crinoids, bibles have been written about those, I'm so jealous! So I'm turning to TFF once more to hopefully find additional information. Is anyone here familiar with Silurian crinoids from the Wenlock epoch? Is it possible to narrow down ID of at least some of these even though I don't have a single stalk or stem segment with the calyx and vice versa. # 1: Maybe a Crotalocrinites or similar? I'd love to know what its calyx looks like. Love the flower shaped lumen, it's so pretty! For comparison, this is a pic of Silurian Crotalocrinites from the British Geological Survey: I'm not 100% sure that they occur in the Racine formation though. Also, the lumen takes up more space within the disk than the lumen on my specimen above. Otherwise the flower shape seems a perfect fit, but hard to tell if the crenolae under the dolomite glaze on my piece are as fine and tightly spaced. Maybe a it's a close relative? #2: I haven't found a single image or description of a crinoid stem that looks like a perfect medieval tower. Anyone here that's familiar with such patterned crinoid stems? (Love the Danish pastry look on its top and bottom too) #3: I assume this poor crinoid was parasitized by some other live form? I know that brachiopods have been found attached to crinoid stems, as illustrated on Chicago's Field Museum work-in-progress website. But I don't think that's what happened to this one. What could have caused such extensive damage? #4: I think this one does have a cirri scar on its left side below. Detail of what I think is the scar in the 2nd pic. The following stem disks are all microscopic in size, less than 5mm: #5: I hope the lovely star-shaped lumen might make it identifiable. #6: Same as for the above, the ship's wheel lumen surely should help with ID? #7: Another Crotalocrinites or similar? Flower shape seems a bit different though, assymetrical. #8: I've found quite a bit of literature about star shaped jurassic crinoid columnals/ossicles, but nothing about Silurian ones. This one, sitting in limestone actually has the widest diameter of all columnals in my collection. Ø = 1.5cm. #9: First calyx. I think this one is very nicely preserved. Ø1cm and height: 1cm. Is it possible to narrow down its ID, despite missing the stem and arms? Also, in most images of crinoid calyces, the brachials visibly grow out of the side of the calyx. Not so with this one. Would they have grown out of the top side by side with its mouth and anus? #10: Second calyx. It's a bit larger, about 2cm wide and 1.5cm tall. Not sure what its original shape used to be, as it's been tumbled and worn and seems to be missing parts on its side. The top is hidden in matrix.
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Hi! Please excuse us if we aren’t following decorum with our photo sizes, staging, etc. Since the quarantine has us unexpectedly homeschooling, we took our 5th grader to collect some fossils and though I’m sure they are pretty basic, I’m having a hard time helping her ID all of them. Any info is appreciated, as we are absolute beginners. ☺️ These were collected at a random roadcut in northern PA, another in West Virginia, and also at Beltsville Lake (where we searched all day for a trilobite until I realized I probably don’t even know what the fragments would look like).
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I found this piece of gravel a while back with a bunch of crinoids and the pygidium of a trilobite sticking out. Been curious ever since as to what the oval with the ridge running through the center and small hole in the middle is.
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2 inch by 1/2 inch with Crinoids, Bryozoans, more and did not expect to see the 3/8th inch 0.9 cm pyrite on it. Allegan County, Michigan From my dig site Yesterday. I believe it is limestone. Would like the approximate age for the fossils and about when did the pyrite form on it?
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