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Found 25 results

  1. watchamacalit?

    think i had put this on here before but the pics were bad and it was with a group... took a few new pics and found a similar item posted way back in 2014 I think also in texas... could this be a similar item? but in perhaps poorer condition. this is the post:.....
  2. Jellyfish?

    Supposed to be from the Cretaceous, found in Mota del Cuevo (Spain). I think it may be a jellyfish... on a shell... Note the soft-looking round brownish double structure on the center. Between the two structures it looks transparent white. Underneath there is a shell. On top there is a stick-structure with another round structure of a different kind I think. What is it? Thank you!
  3. 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
  4. Jellyfish fossil?

    I discovered this specimen by chance a few years before I got into fossil hunting. I was on a vacation at Oak Island, North Carolina when I found it. I am thinking it is a Jellyfish fossil.
  5. Jellyfish?

    Unfortunately I don’t have much useful detail to share with you here. I found this in Illinois at the bottom of a bridge filled with slabs of rock blasted from God-knows-what quarry. It other slabs like it contained fragments of brachiopod shells and calymene trilobites. It is about 4 1/2cm in diameter. My best guess was a jellyfish or something similar; a geologist whom I showed it to agreed, but honestly neither of us were at all confident in our assessment. Thoughts?
  6. Mazon Help - Number six: jellyfish

    Probably Essexella asherae, but wishing it were Lascoa Mesostaurata.
  7. 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.
  8. Purse State Park

    Hello, I was thinking of taking my kids to Purse State Park in Maryland in the coming week while the weather is still this warm, but I have not been there before and was wondering if jellyfish are as much of an issue when the water is warm as is the case in the Chesapeake Bay and places like Brownies Beach. I know very little about the Potomac and the water type and whether it is brackish enough to support jellyfish, hence my question :) Last thing I want is for a family outing looking for shark teeth to go south due to some floating menaces. Looking forward to getting to this location and sharing the finds with the forum. Thanks, Matt
  9. Another Jellyfish?

    Two halves of the same nodule.
  10. Do you know what this is?

    I don't know what this is, maybe a scyphozoan? https://drive.google.com/open?id=0B5lqA7GaQIJGODAxRFAtcmRuY1k https://drive.google.com/open?id=0B5lqA7GaQIJGTDFEZ0pIQ2xvcW8
  11. Oldest mass animal stranding revealed in Death Valley fossils New Scientist Daily News, July 26, 2017 https://www.newscientist.com/article/2141881-oldest-mass-animal-stranding-revealed-in-death-valley-fossils/ The publications are: Sappenfield, A.D., Tarhan, L.G. and Droser, M.L., 2017. Earth's oldest jellyfish strandings: a unique taphonomic window or just another day at the beach?. Geological Magazine, 154(4), pp.859-874. Abstract: https://www.cambridge.org/core/journals/geological-magazine/article/earths-oldest-jellyfish-strandings-a-unique-taphonomic-window-or-just-another-day-at-the-beach/BD3A332A705E4AFB44E32FFAD2060D56 PDF file: https://www.researchgate.net/publication/303955816_Earth's_oldest_jellyfish_strandings_a_unique_taphonomic_window_or_just_another_day_at_the_beach Sappenfield, A.D., 2015. Precambrian-Cambrian Sedimentology, Stratigraphy, and Paleontology in the Great Basin (Western United States). Unpublished PhD dissertation. University of California, Riverside. http://escholarship.org/uc/item/4r02d6xr Yours, Paul H.
  12. Recently, while I was doing field work volunteering for the Denver Botanic Gardens in Hoosier Pass, I took time over lunch to look for any potential fossils. What had found was very strange, they looked to be fossils of Essexella and Reticulomedusa as found in Mazon Creek nodules. I believe that the history would make sense for them to be able to be found in Colorado, but I do not know. Here are my photos, with a penny for scale. EDIT: I will reply with more photos due to the max filesize the one here appears to me to be Reticulomedusa, but I need an expert opinion to confirm or deny. I believe that the reason that they aren't in well-defined exposed nodules like in Mazon Creek is due to the fact that they would open annually due to the freeze-thaw process happening naturally, without having the rest of the surrounding rock mined away.
  13. Stranded jellyfish

    From the album Calvert Cliffs - 3/7/17

    Stranded jellyfish in a pool of water. These jelly fish were all over the beach.
  14. Is this a jellyfish?

    This looks an awful lot like a worn jellyfish fossil, however there are some stones with odd name that look similar, maybe trace fossil can't remember. The other side doesn't look like anything. North Texas Cretateous. Help!
  15. Pfalzpaint is famous for its jellyfish or Scyphozoa.
  16. Hello again to everyone on the forum and can't wait to learn from you. I just joined this week and this will be my first main post. I have always been very interested in fossils and geology and finally went on an official fossil Hunting trip this past week. I went with my family the first time and we scouted out the area. I did a lot of research beforehand and read that Pit 11 was one of the most popular concretion hunting spots at Mazon, but that also means they are harder to find. After more research, I decided we should check out an area to the south called the Mazonia South Unit. I read that this area had been less collected because there is much thicker vegetation. The vegetation was very thick. We hiked for a couple miles into the Forested area and we came to the bottom of a large hill. Me and my brother scaled the cliff and saw a way down the other side. The bottom of the other side of the cliff ended right into a river. After we made it to the bottom, my father found the first fossil, a small leaf, in an open concretion. We then saw concretions everywhere around us and started collecting. We only stayed for about an hour that day because the mosquitoes were relentless. I got home and saw I had some fossils and got so excited, I went back out there by myself the very next day. I scaled the cliffs up and down and got as many concretions as I could. Not satisfied, I just came back from another trip out to Mazon yesterday. I'm still refining my technique, but I spent most of the time going up and down the cliff sides looking and picking for concretions. I had a geologic pick, and a bag as my main tools. The first couple times, I picked everything I saw. After more research, I was more picky yesterday and did a lot of cracking in the field. I am not done processing all my concretions but I will post what I have found so far. Please let me know if you can help identify any of them and if the pictures are good for your viewing. Any general tips for fossil hunting and anything is also welcome I have more than I can post in this one post, but will follow up post with rest of my current photos.
  17. Mazon Creek Fauna

    A few items from my collection. Extra large Essexella asherae Multiple Essexella asherae Essexella asherae and worm
  18. This large specimen was identified long beforeI acquired it, as simply a jellyfish. Supposedly, and I have no reason to doubt it, it is from Pit 11, Mazon Creek. Does anyone have an idea on the particular jellyfish it might be? The small concretion (also Mazon Creek) carried no identification whatsoever, although I'm inclined to believe it could be either an Octomedusa pieckorum or Reticulomedusa Greenei. Any thoughts on this one? Thank you!
  19. What's In My Jelly?

    So i found this guy already popped at pit 11 South Unit. To my surprise and untrained Mazon eye i saw what looks to be something associated with my Essex jellyfish. Any ideas? Any and all help is appreciated. Thanks!
  20. Possible Mushroom Or Jellyfish?

    Hi, I am new to fossils and despite taking a few geology classes at Mizzou and searching through google I believe it is an Cnidaria but I am not sure, hopefully someone here is a bit more knowledgeable than I am haha. Thanks!
  21. Mazon Creek - Jellyfish

    Hi Folks- I've always thought this was a jellyfish from a Essex location. Folks agree?
  22. Since it was a particularly warm day for winter, I decided to take a stroll down to the beach (Breezy Point, MD) and do some fossil hunting. It was a great time despite the fact that I wasn't alone, there were hundreds of baby jellies scattered about in the water! For the most part I stayed on dry land until I noticed a really good looking shark tooth being guarded by a few jellied. I ended up using a piece of driftwood to shoo the them away until it was safe enough to stick my hand in the water and grab the tooth. What about you guys? Anybody else here on Fossil Forums have jellyfish related stories when it comes to fossil hunting on the beach?
  23. About a month ago I found this fossilized "lime" looking thing on the North Sulphur River. After doing a little research and based on the photo below from Lance Hall's page, I think it is a jellyfish impression or mold. http://www.freewebs....ttexashunts.htm (about 2/3 of the way down the page) Of course, I knew it wasn't a lime, but I had nothing to go on for a while! What do you think? Is it or isn't it a jellyfish mold? Here is the "bottom" (other side) and cross section. I was fascinated with the crystalized holes in the cross section. I was fascinated with the crystalized holes in the cross section below: Kimmer
  24. Moroccan Jellyfish + Trilobite

    I bought these recently, and with all the talk about fake fossils, I wonder if anyone can tell if these are real or fake, and if they are real, what else can be told about them? First, this was sold to me as a Cornuproetus sp. from Alnif (Devonian). Not prepped very well, there are airscribe marks between the segments. There is also a glued crack running kind of diagonally across the piece, dont know how well you can see it in the pics.. hope I didnt pay too much.
  25. 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 May 24, 2018. Phylum Cnidaria (Coelenterata) Subphylum Medusozoa - Jellyfish and Their Relatives Class Cubozoa - Box Jellyfish, Sea Wasps and Their Relatives Han, J., et al. (2016). Divergent evolution of medusozoan symmetric patterns: Evidence from the microanatomy of Cambrian tetramerous cubozoans from South China. Gondwana Research, 31. Han, J., et al. (2013). Early Cambrian Pentamerous Cubozoan Embryos from South China. PLoS ONE, 8(8): e70741. Class Hydrozoa - Portuguese Man 'O War, Hydra and Their Relatives Subclass Leptolinae (Hydroidolina) Order Anthomedusae - Athecate Hydroids Bell, C.M., J.P.A. Angseesing and M.J. Townsend (2001). A Chondrophorine (Medusoid Hydrozoan) from the Lower Cretaceous of Chile. Palaeontology, Vol.44, Part 5. Cairns, S.D. (1983). Observations on Species of the Fossil Genus Axopora (Coelenterata: Hydrozoa) and its Evolutionary Significance to the Stylasteridae. Proc.Biol.Soc.Wash., 96(4). Cairns, S.D. and J.A. Grant-Mackie (1993). Review of the fossil Stylasteridae (Cnidaria: Hydrozoa) from the New Zealand region. New Zealand Journal of Geology and Geophysics, Vol.36. Campbell, J.D. (1974). Heterastridium (Hydrozoa) from Norian Sequences in New Caledonia and New Zealand. Journal of the Royal Society of New Zealand, Vol.4, Number 4. Fryer, G. and G.D. Stanley (2004). A Silurian Porpitoid Hydrozoan from Cumbria, England, and a Note on Porpitoid Relationships. Palaeontology, Vol.47, Part 5. Narbonne, G.M., et al. (1991). A Chondrophorine (Medusoid Hydrozoan) from the Basal Cambrian (Placentian) of Newfoundland. J.Paleont., 65(2). Stanley, G.D. and Y. Kanie (1985). The First Mesozoic Chondrophorine (Medusoid Hydrozoan), from the Lower Cretaceous of Japan. Palaeontology, Vol.28, Part 1. Stolarski, J. (1998). Conopora (Stylasteridae, Hydrozoa) from the Eocene of Seymour Island. Antarctic Science, 10(4). Wilmsen, M. (2003). Taxonomy, Autecology and Palaeobiogeography of the Middle Cretaceous Genus Parkeria Carpenter, 1870 (Spherical Hydrozon). Journal of Systematic Palaeontology, 1(3). Order incertae sedis Stanley, G.D. and J.-P. Zonneveld (2011). The Occurrence of the Hydrozoan Genus Cassianastraea from Upper Triassic (Carnian) Rocks of Williston Lake, British Columbia, Canada. Journal of Paleontology, 85(1). Order Leptomedusae - Thecate Hydroids Adler, L. and M. Roper (2012). Description of a new potential fossil hydromedusa Palaequorea rygoli and revision of the fossil medusa Hydrocraspidota mayri from the Plattenkalks of the Franconian Alb, Southern Germany. N.Jb.Geol.Palaont. Abh., 264/3. Muscente, A.D. and W.D. Allmon (2013). Revision of the Hydroid Plumalina Hall, 1858 in the Silurian and Devonian of New York. Journal of Paleontology, 87(4). Romero, A., R.R. Rogers and L.A. Gershwin (2011). Medusoid Cnidarians from the Montral-Alcover Lagerstätten (Triassic), Northeastern Spain. Batalleria, 16. General Hydrozoa Baliński, A., Y. Sun and J. Dzik (2014). Probable advanced hydroid from the Early Ordovician of China. Paläontol. Z., 88. Cartwright, P., et al. (2007). Exceptionally Preserved Jellyfishes from the Middle Cambrian. PLoS ONE, 2(10). Jensen, S., et al. (2002). A scratch circle origin for the medusoid fossil Kullingia. Lethaia, Vol.35. Muscente, A.D., W.D. Allmon and S. Xiao (2015). The Hydroid Fossil Record and Analytical Techniques for Assessing the Affinities of Putative Hydrozoans and Possible Hemichordates. Palaeontology, 2015. Ponomarenko, E.S., E.O. Statsenko and M.N. Urazaeva (2014). A Hydrozoan Interpretation of Palaeoaplysina (Enigmatic Organisms) Based on the Canal Arrangement and Structure. Paleontologicheskii Zhurnal, Number 2. Wade, M. (1972). Hydrozoa and Scyphozoa and other Medusoids from the Precambrian Ediacara Fauna, South Australia. Palaeontology, Vol.15, Part 2. Class Incertae Sedis Wang, X., et al. (2017). Anatomy and Affinities of a New 535-Million-Year-Old Medusozoan from the Kuanchuanpu Formation, South China. Palaeontology, 2017. Class Scyphozoa Orders Coronatae and Semaeostomeae - Jellyfish Cartwright, P., et al. (2007). Exceptionally Preserved Jellyfishes from the Middle Cambrian. PLoS ONE, 2(10). Fryer, G. and G.D. Stanley (2004). A Silurian Porpitoid Hydrozoan from Cumbria, England, and a Note on Porpitoid Relationships. Palaeontology, Vol.47, Part 5. Gaillard, C., et al. (2006). New Jellyfish Taxa from the Upper Jurassic Lithographic Limestones of Cerin (France): Taphonomy and Ecology. Palaeontology, Vol.49, Part 6. Han, J., et al. (2016). The earliest pelagic jellyfish with rhopalia from Cambrian Chengjiang Lagerstatte. Palaeogeography, Palaeoclimatology, Palaeoecology, 449. Johnson, R.G. and E.S. Richardson (1968). Pennsylvanian Invertebrates of the Mazon Creek Area, Illinois - The Essex Fauna and Medusae. Fieldiana Geology, Vol.12, Number 7. Slaczka, A. (1971). Dactylodiscus beskidensis n.gen, n.sp. - a Medusa from the Carpathian Flysch. Acta Palaeontologica Polonica, Vol.XVI, Number 4. Sprigg, R.C. (1947). Early Cambrian (?) Jellyfishes from the Flinders Ranges, South Australia. Trans.Roy.Soc.S.Aust., 71(2). Stanley, G.D., and Y. Kanie (1985). The First Mesozoic Chondrophorine (Medusoid Hydrozoan), from the Lower Cretaceous of Japan. Palaeontology, Vol.28, Part 1. Strachan, I. (1968). A New Medusoid (?) from the Silurian of England. Palaeontology, Vol.11, Part 4. Wade, M. (1969). Medusae from Uppermost Precambrian or Cambrian Sandstones, Central Australia. Palaeontology, Vol.12, Part 3. Order Conulariida (May not belong with Scyphozoa) Conulariids - Africa/Middle East Van Iten, H., et al. (2016). Palaeobiogeography, palaeoecology and evolution of Lower Ordovician conulariids and Sphenothallus (Medusozoa, Cnidaria), with emphasis on the Fezouata Shale of southeastern Morocco. Palaeogeography, Palaeoclimatology, Palaeoecology, xxx. (Article in press) Conulariids - Asia/Malaysia/Pacific Islands Swami, N.K., et al. (2017). First record of extinct Paraconularia (Cnidaria, Scyphozoa) from the Tethyan sequence (Upper Permian) of Spiti Valley, Himachal Himalaya, India. Palaeontologia Electronica, 20.3.42A. Van Iten, H., et al. (2013). Conulariids and Sphenothallus (Cnidaria, Medusozoa) from the Tonggao Formation (Lower Ordovician, China). Bulletin of Geosciences, 88(4). Walls, B.J. (2007). New Occurrences of Ordovician, Devonian and Carboniferous Conulariids from North America, South America and Asia. Senior Thesis - Ohio State University. Conulariids - Australia/New Zealand Waterhouse, J.B. (1979). Permian and Triassic Conulariid Species from New Zealand. Journal of the Royal Society of New Zealand, Vol.9, Number 4. Conulariids - Europe (including Greenland and Siberia) Barth, G., et al. (2013). Paraconularia bachmanni N.Sp. from the Germanic Upper Triassic, the First Fresh-Water Occurrence of a Conulariid. In: The Triassic System., Tanner, L.H., J.A. Spielmann and S.G. Lucas (eds.), New Mexico Museum of Natural History and Science, Bulletin 61. Ivantsov, A.Y. and M.A. Fedonkin (2002). Conulariid-Like Fossil from the Vendian of Russia: A Metazoan Clade Across the Proterozoic/Palaeozoic Boundary. Palaeontology, Vol.45, Part 6. Jerre, F. (1993). Conulariid Microfossils from the Silurian Lower Visby Beds of Gotland, Sweden. 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