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  1. From the album: Missouri Conulariids

    Found this wonderful specimen on March 10th, 2024. After finding this specimen I decided to do some research on these jellyfish and found out that they can form calcium phosphate pearls oddly enough. As fate would have it the only specimen I own to have a visible pearl was my most recent find! If I had not read in a paper that these jellyfish can create pearls I would not have believed it, but as the saying goes seeing is believing! Size: Pearl: Paper which has the only other image I've seen of these pearls online:
  2. Samurai

    Another Broken Paraconularia sp.

    From the album: Missouri Conulariids

    Another broken specimen weathered from the rock. I always find these jellyfish fascinating whenever they present themselves.
  3. Samurai

    Broken Paraconularia sp.

    From the album: Missouri Conulariids

    A lot of my conulariid finds tend to be broken at or near the tip of the apex, even before the attachment which is typical of other conulariid specimens. I am not sure if it is a plane of weakness, a common feature when the animal dies, or simple predation, but when I collected this specimen from the Paola limestone the lower half was missing from the rest of the slab, despite being an almost clean fracture.
  4. Myryad

    possible fossil id

    hello, does anyone know what is this? I know it's from southern Germany or Austria mountain areas. Got it together with several ammonites and sea floor sediments parts. The possible fossil is around 9 cm long and 5 wide. Thank you
  5. Tidgy's Dad

    Adam's Cambrian

    A rangeomorph holdfast trace fossil from the Ediacara formation, Rawnsley quartzite of the Flinders Range, South Australia. This specimen is Medusina mawsoni, so called because it was until recently thought to be a jellyfish, but is now believed to be the attachment point of a fractal rangeomorph as Charniodiscus is the point of anchorage for Charnia sp. This one may have been the holdfast point for some species of Rangea. The diameter of the outer circle is 1.5 cm and the fossil is estimated to be 555 million years old.
  6. I have a lot of unopened Mazon Creek concretions and though I do put some out in the winter for the Freeze / Thaw process, the vast majority, especially the larger ones do not open. So to dwindle my concretions, I have no problem whacking them with a hammer, and that is what I was doing today. As we all know, this is not the best way to do it since it can damage a nice specimen, but I take my chances. I always picked up any concretion that looked promising and never passed up larger ones. This all depends on the are that you are collecting, concretions from Pit 11 are never super large, but Pit 4 always produced larger ones - see below. Though these are large, they are by no means my largest. The vast majority of the time there is nothing inside, like the one below. Other ones produce something nice, like this Alethopteris that I cracked open today. Cleaned up_ A couple of my other finds from today, nothing spectacular, but is nice to get rid of the dud ones. Neuropteris Annularia Annularia, Neuropteris and Bark Asterophyllites Bark Essexella asherae Jellyfish
  7. Hello everyone! I've been inspired by so many good Mazon Creek topics in this forum, I thought I would start my own. I'll post my own finds, which so far don't include anything as exotic as a Tully Monster, but maybe I'll get lucky on page 134 or so... I have to credit my kids with getting me interested in fossil collecting. I was always interested in rocks and fossils but when my 10 year old son had his dinosaur phase it really sparked my interest again. I wondered if an ordinary person like me could go out and find fossils? So I Googled fossil collecting and found out that not only could I search on my own, one of the world's best sites for amateurs was just 3 hours away! The date I discovered Mazon Creek existed was 9/10/2017. I know that date because earlier in the day was the last ESCONI trip to the Braceville spoil pile for the year - I just missed it! So in May 2018 I finally went on that trip and was hooked. Since then I've gone to Braceville several times, the I&M Canal trip once, and a handful of trips on my own into Pit 11. I want to thank too many people to list for helping me learn about this new hobby. Everyone I've met on the field trips has been so friendly and helpful. And if you have posted something about Mazon Creek on this forum, I've read it. Special thanks to Nimravis for his Sometimes You Have To Whack It thread, which he started the day after my first trip to Mazon Creek - it has taught me so much and I'm so impressed at what a genuinely nice person he is. And Andrew Bach's book from his American Fossil Hunt site is wonderful, so so helpful. With that, onto the fossils (and lots of questions from me). I thought to start I would show some of my jellyfish, all Essexella asherae, I believe. I find it interesting that they are all so different, although they tend to fall into various "types" - some have a distinct "head", others are just faint outlines, some are just cylindrical shapes. #1-3 below are all from Pit 11 - the first two have a distinct head and the other is more cylindrical. For anyone who hasn't heard of Mazon Creek, these fossils are found in siderite concretions from the mid-Pennsylvanian epoch of the Carboniferous period, from roughly 305-310 mya. Cheers! Chris
  8. Al Tahan

    New York Ordovician Jellyfish?

    I’m helping fellow forum member @DrDave move and we came across this piece he collected from the Whetstone Gulf formation a couple years back. My immediate thought was “holy ___ that’s a jellyfish!!” but I can’t say for certain but oh my gosh if it’s not a jelly then it’s done a wonderful job at looking like one lol. any thoughts from the folks here ??
  9. Normally I have a good knowledge about Solnhofen-Fossils. This is the first one since many years I really do not exactly know what it is... Might be a Jellyfish (but the symmetrie does not fit), a sponge? (do not think so, but...), young Sting ray (you see, the ideas become more interesting because we really do not have a clear idea...). Size is approx. 15 x 12 cm (6 x 4,5"), split pair what do you think? thanks for input
  10. Misha

    Essexella asherae

    From the album: Misha's Carboniferous

    Essexella asherae Cnidarian Mid Pennsylvanian Mazon Creek Lagerstätte Illinois
  11. jpc

    Jellyfish Impression?

    Hi all.... A visitor brought this into our museum this morning. Very unusual. Of course she wanted to know what it is. Two of us independently thought jellyfish impression. But things like that are super rare. It is from the Jurassic marine deposit here in Wyoming. The Fm has some invert impressions and tons of belemnites and the occasional ichthyosaur bones and ammonites. There are worm traces on this surface that you might be able to see. Anyone have any insights into jellyfish fossils? I am familiar with the Mazon Creek Essexellia and such, and Solnhofen jellies, but this is different. That's my thumb for scale. Any other thoughts... if it is not a jellyfish... what the heck is it? Impression of....???? Thanks and happy fossiling... its getting to be springtime. Wait... it is Spring. Happy Equinox folks. jpc
  12. A new paper redescribing the common Pit Eleven Jellyfish as an anemone. https://onlinelibrary.wiley.com/doi/10.1002/spp2.1479
  13. Oxytropidoceras

    Is Brooksella Even a Fossil?

    This Strange Ancient 'Fossil' May Not Have Been Left by Any Living Thing Carly Cassella, ScienceAlert, Nature, February 25, 2023 The open access paper is: Nolan, M.R., Walker, S.E., Selly, T., and Schiffbauer, J. 2023, Is the middle Cambrian Brooksella a hexactinellid sponge, trace fossil or pseudofossil? Peer J. Yours, Paul H.
  14. DarasFossils

    Solnhofen Jellyfish?

    I just went to a local rock and fossil shop in Montana and they had an amazing selection of fossils for really reasonable prices, so I ended up getting quite a few. They had a lovely Solnhofen rack, mostly filled with fish, insects, and coprolites and some beautiful squid but I saw this questionable creature in the corner for very cheap so I decided it was worth it to purchase. I am guessing it is a jellyfish due to the shape, and I hope it is, but if it is something else, I really did not waste my money. It's around an inch and a half in diameter (4cm.) Just hoping it's not a coprolite lol. Anyone know a thing or two about Jurassic Jellies? Pic below, I can take a better quality photo in the daytime if that helps.
  15. Day Two ; Locality Two (or Seven if you include Day One) Prepping and Retail, Erfoud, Morocco. 20th February 2019 Erfoud town itself is famous for its beautiful fossils, its skilled fossil preppers and also for its wide variety of fakes, composites, good and bad repair jobs and utter frankenfossils. A large percentage of fossils from Morocco that are available in shops and on the internet the world over originate from here or pass through the place. Fossils are sent here for prepping from all over the south and then sent from here everywhere in the country and abroad. There are many little shops, prepping centres with huge attached shops and 'museums which are really pretty much just shops as well. Top Tip :The prices here are about ten times the price of the prices in the little shacks on the edge of town or elsewhere in Morocco, but haggling can reduce the cost significantly. Many places have 'fixed' prices, but they're actually always negotiable. This time, we went to the one my friend Anouar, who is a tour guide, takes his tourists and I was asked politely not to accuse the owners and chap who'd show us around and do the chat, of having fakes or wrong info, so i had to bite my lip. We asked if it was okay to take photos and they said yes, which I was surprised about, but I guess it was because Anouar was going to use photos for his own purposes and this would involve advertising the shop. Top Tip : You will see a lot of fixed prices in Moroccan Dirham in the pieces and shelves. Divide by ten to have a price in US dollars. Because we were with Anouar, we were told everything is 50% of the marked price, but I suspect they often do this anyway, "Special Berber prices, today only". I've heard that before. And you can still haggle to get something way under that 50% and you just know they'll still be making a good profit. I didn't buy anything. Little local stores are more my line anyway - I rarely shop in supermarkets. Here is the entrance where you can see huge plates ready for prepping and polishing, some have been cut into pieces and they glued back together it seems to me, I know this happens with the crinoid beds, so i guess it's true of the orthocerid and goniatite stuff too. Some just look cobbled together because of the circular saw marks when cutting out upper layers.With these, polishing will remove the grid lines. These sheets are from the local area and contain the goniatites and orthoconic nautiloids we were walking on earlier, but from a better quality, less eroded and distorted source. Famennian, Upper Devonian, I think. This photo shows one of the trenches they dig to reach the best quality material, similar to the ones i was walking along earlier this day : Below, somebody walking on the slabs and some maps of the the world at different times in it's past, showing continental drift. : Notice these are not the famous black orthocerid marbles that come from elsewhere. The picture of Spinosaurus is a bit misleading, as you all know, it's not found in these marbles or in the Erfoud area. In fact there is very little Kem Kem material available here these days, though there was in the past. I suspect the Kem Kem area probably has it's own facillities nowadays.
  16. Starting in early 2021, I've been going fossil hunting at the Mazon Creek area in Grundy County, Illinois. The site I visit the most so far is the fairly large Mazonia-Braidwood State Fish and Wildlife Area. After advice from other members of the Fossilfourm, I've decided to put the nodules I'm most curious about under the microscope and dissecting scope! With these better photographs, I'm wondering if anyone could give a proper ID for these specimens?
  17. Starting in 2021, I've been going fossil hunting around the Mazon Creek area in Grundy County, Illinois. The site I visit the most so far is the fairly large Mazonia-Braidwood State Fish and Wildlife Area and at first, I would barley find anything. Then after visiting Monster Lake and another secret location in the area, I started finding more fossils. However, most are around 2-7 cm. In length and I'm still having difficulty getting IDs for them? Would anyone be able to help ID them? I think this could be some sort of Chondrichthyan or a lobe finned fish? Maybe part of a dragonfly wing or a plant? Plant fossil - Genera unknown currently? I don't know what this could be? The specimen here looks almost like a plant fossil. Worm fossil - genera unknown currently.
  18. Found in the side of a building and in the surrounding landscaping. From the Cambrian seashore sandstone of Blackberry Hill Wisconsin. The place is known for its fossils of mass jellyfish strandings and its trace fossils of some of the first arthropods, mollusks, and other animals on land. What are these? Thanks!
  19. The diameter of the dark colored depression is about 1.5 cm. Around this depression there are only very faintly indicated ring-shaped structures with a diameter of about 4 cm. On the slab there is another smaller impression of a second medusa. The Krukowski Quarry near Mosinee, Wisconsin is well known for abundant ichnofossil impressions of Climactichnites and Protichnites together with hundreds of beached jellyfish. Jellyfish impressions up to 70 cm in diameter were found on several bedding layers, so far the largest jellyfish in the fossil record. The largest recent form, the lion's mane jellyfish, can have a bell with a diameter of 210 centimetres (7 feet) and tentacles around 36.6 m (120 ft) long. This site was apparently beach and shoreline at least some of the time during the late Cambrian. Fossils and tracks are from either the Mount Simon Sandstone or from the Wonewoc Formation and are preserved in medium to coarse grained sandstone. Identified by oilshale. Reference: Hagadorn, James W., Dott, Robert H. Jr., Damrow, Dan (2002) Stranded on a Late Cambrian shoreline: Medusae from central Wisconsin. Geology 30(2) pp. 147-150.
  20. dwillingman

    New member with a jellyfish?

    Has anyone ever heard of someone finding a solicified jellyfish fossil with a bunch of babies in The Matrix with the adult?
  21. Hello everyone, I hope everyone is doing well I have recently started getting myself into collecting fossils and I came upon this lot of jellyfish fossils so I purchased them because they seemed interesting and it’s something I never had. Do these look fine ? To me they just look like stained rocks but that could just be because jellyfish are soft bodied organisms. Thanks for your input
  22. JimTh

    Popped some Mazon concretions

    Hi folks, I went to the spoils pile with ESCONI pre-covid. I've had a bucket sitting out back ever since with concretions. Went through it today and banged a few together. I am not good at recognizing Mazon material, so I thought I would ask for some assistance here. I'm 99% sure 1A is a jellyfish, I haven't sorted out the name yet though. 1B appears to have some whiskers or antennae, so I'm hopeful it's some sort of shrimp or creepy crawly. The rest I'm kind of at a loss on. Any help appreciated!
  23. Ordivician19

    Is this a jellyfish? Mazon Creek, IL

    Hi! I’ve been working on opening some nodules from Mazon Creek, IL, and opened this one about an hour ago. I’ve been looking at pictures online of jellyfish and have seen some loosely defined like this nodule, though this is probably just a regular old concretion. What do you think? Thanks! P.S. In hindsight I realize that wetting this nodule down wasn’t particularly helpful lol
  24. Muuleey

    Possible Jellyfish?

    I can only think this MAY be the body of a jellyfish without its tentacles. Found in East Feliciana Louisiana...Help if you can.....Thanks
  25. Hi there! I was browsing through my favorite sellers' stores earlier today and I came across this very peculiar fossil. The fossil is said to be of an Ordovician age jellyfish (Eldonia Berbera) from Mecissi, Morocco. I'm still fairly new to collecting fossils, thoroughly researching them, and learning about paleontology more in depth, so the thought of a jellyfish fossilizing never really crossed my mind. I'm not entirely interested in purchasing this fossil; rather, I'm posting this more out of pure curiosity. I'd greatly appreciate it if anyone could share their insight about this particular specimen and I'd love to learn about how such a process as the fossilization of a jellyfish could go about. I think this could be a great learning moment for me and other like myself who are still in the process of learning such things. Thanks y'all!
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